update CHANGELOG

add set mode option
remove manual econet mcp
2026-07-16 15:39:06 -04:00 · 2026-07-16 15:35:12 -04:00 · 2026-07-16 15:03:21 -04:00 · 2026-07-16 15:02:17 -04:00 · 2026-07-06 11:46:32 -04:00 · 2026-07-06 11:35:25 -04:00
31 changed files with 3964 additions and 391 deletions
@@ -25,12 +25,12 @@ jobs:
    if: startsWith(github.ref, 'refs/tags/v')  # Only run on tag push
    steps:
      - name: Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7

      - name: Set up Go Environment
        uses: actions/setup-go@v4
        with:
-          go-version: '1.24'
+          go-version: '1.26'

      - name: Build Binary
        run: make build
@@ -72,7 +72,7 @@ jobs:
    if: startsWith(github.ref, 'refs/tags/v')  # Only run on tag push
    steps:
      - name: Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
@@ -102,7 +102,7 @@ jobs:
    outputs:
      chart-updated: ${{ steps.filter.outputs.chart }}
    steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
      - name: Check Chart Changed
        uses: dorny/paths-filter@v3
        id: filter
@@ -118,7 +118,7 @@ jobs:
    if: ${{ needs.check-chart.outputs.chart-updated == 'true' }}
    steps:
      - name: Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7

      - name: Install Helm
        env:
@@ -9,14 +9,44 @@ Exporter for Rheem EcoNet / Rheemcloud water heaters, built on the
  `appServices` slice (registers `&econet.EconetService{}`) and the
  `serviceConfig.LoadEnv()` call (see Config gotcha below).
 - `pkg/econet/econet.go` — `EconetService` implements `service.AppService`.
-  It **owns the single `*rheemcloud.Client`** and shares it with the gRPC,
-  MCP, and metrics sub-servers. `Init` connects (fail-fast if creds missing);
-  the returned `ShutdownFunc` stops metrics and closes the client.
+  It **owns the single `econetclient.Client`** and shares it with the gRPC,
+  MCP, and metrics sub-servers. `Init` fails fast if creds are missing, then
+  refreshes device state on a ticker **in a background goroutine** (`pollLoop`,
+  interval `pollInterval`) so a slow or unreachable cloud never blocks
+  HTTP/gRPC server startup. The client is stateless REST, so `ShutdownFunc` is
+  effectively a no-op (the poll goroutine stops on ctx cancel).
+- `pkg/econet/econetclient/` — a minimal EcoNet REST client (ClearBlade
+  backend). `client.go` does the read REST calls (auth → `getUserDataForApp` →
+  `dynamicAction` usage) and caches a snapshot under an `RWMutex`; `device.go`
+  decodes the `@...` datapoints into a flat `Device` struct (ported from
+  kevinburke/rheemcloud-go, minus MQTT). `Devices()` is empty until the first
+  `Refresh` succeeds — consumers just see an empty list (no nil-guarding).
+  **No MQTT**, so `WiFiSignal` and `Running`/`RunningState` stay zero.
+- **Writes (SetMode)**: `Client.SetMode` changes a unit's operating mode by
+  publishing a desired-state message over ClearBlade's REST publish endpoint
+  (`POST /message/{systemKey}/publish`, topic `user/{account_id}/device/desired`,
+  payload `{transactionId, device_name, serial_number, "@MODE": <idx>}`). This
+  is the HTTP equivalent of the app's MQTT publish — **no MQTT client needed**.
+  `@MODE` is an *index* into the device's reported mode list, so `device.go`
+  retains that list (`modeEnumText`) and maps a slug → index (`modeIndex`);
+  supported modes are device-specific (`Device.SupportedModes`). The change is
+  **applied asynchronously** — the new mode only shows up on a later `Refresh`,
+  and a 200 from publish means "accepted", not "applied".
 - `pkg/econet/econetgrpc/` — `EconetService` gRPC impl (`ListDevices`,
-  `GetDevice`) + `deviceToProto`. Does **not** own a client; it's injected.
- `pkg/econet/econetmcp/` — MCP server at `/api/mcp`; the `list_water_heaters`
-  tool delegates to the gRPC server.
- `pkg/econet/econetmetrics/` — OTEL observable gauges + a usage poller.
+  `GetDevice`, `SetMode`) + `deviceToProto`. Does **not** own a client; it's
+  injected. `SetMode` maps the proto `Mode` enum → client slug; note MCP calls
+  it in-process and so **bypass the protovalidate interceptor** (the gRPC/REST
+  paths don't), hence `SetMode` re-checks the enum itself.
+- `pkg/econet/econetmcpgen/` — **active** MCP server at `/api/mcp`. Registers
+  the tools generated by protoc-gen-go-mcp (`api/econet/v1alpha1/v1alpha1mcp/`)
+  against our go-sdk `*mcp.Server` via the `runtime/gosdk` adapter, forwarding
+  in-process to the gRPC server. Exposes the same package API as `econetmcp`.
+- `pkg/econet/econetmcp/` — the older hand-written MCP server; a single
+  `list_water_heaters` tool delegating to the gRPC server. Kept in place as a
+  fallback. **Switch between the two** with the aliased `econetmcp` import in
+  `pkg/econet/econet.go` (one line — both packages export identical symbols).
+- `pkg/econet/econetmetrics/` — OTEL observable gauges (read the client
+  snapshot at scrape time; no poller of its own).

 ## Config gotcha (important)

@@ -40,16 +70,16 @@ that's all it takes — no extra wiring.

 ## Metrics conventions

- Live state is read at scrape time inside a `RegisterCallback` over
-  `client.Devices()` (cheap, in-memory, always current — the rheemcloud client
-  keeps state fresh over MQTT). Usage (`EnergyUsage`/`WaterUsage`) is REST and
-  slow, so a background poller (`usageInterval`) caches it; the usage callback
-  reads the cache.
+- Live state and usage are both read at scrape time inside `RegisterCallback`s
+  over `client.Devices()` (cheap, in-memory). The `pollLoop` in `econet.go`
+  keeps the snapshot fresh over REST (`client.Refresh`), which folds daily
+  energy/water usage totals into each `Device`. No usage cache or event
+  draining — the callbacks just read the current snapshot.
 - **Attributes**: dotted/namespaced `econet.*` (semantic-convention style),
  low-cardinality only (serial, device_id, friendly_name, type, generic_type,
  mode, energy_type). **Never** put changing values (timestamps) in attributes
  — `econet_last_updated_seconds` is a metric *value*, and it's suppressed
-  until the first MQTT update so it never emits a garbage epoch.
+  until the first refresh so it never emits a garbage epoch.
 - **Units live in metric names** (`_fahrenheit`, `_kwh`, `_gallons`,
  `_dollars`), NOT via `metric.WithUnit` — the OTEL→Prometheus exporter would
  otherwise append a second unit suffix (`..._fahrenheit_F`).
@@ -57,11 +87,13 @@ that's all it takes — no extra wiring.
 ## Workflow

 - Regenerate proto: `make proto` (buf; `PROTO_DIRS=proto/econet/v1alpha1/*`).
+  This also runs the `protoc-gen-go-mcp` plugin (see `buf.gen.yaml`), emitting
+  the MCP registrars under `api/econet/v1alpha1/v1alpha1mcp/`.
 - Regenerate config schema after config changes: `make schema`.
 - Build/test: `go build ./... && go test ./...`.
- The rheemcloud `*Device` has no exported constructor, so `deviceToProto`
-  isn't unit-testable in isolation; test the pure helpers (`summarizeDevices`,
-  `b2i`) and exercise the rest with a live run.
+- `econetclient.Device` is a plain struct, so `deviceToProto` and the datapoint
+  decoders (`mode`, `enabled`, `setpoint`, `hotWater`) are unit-testable by
+  hand-building a `Device` or feeding raw JSON to `newDevice`.

 ## Live verification (needs a real Rheem account)

@@ -71,3 +103,11 @@ Creds are configured via `ECONET_EMAIL` / `ECONET_PASSWORD`. Run
 (streamable HTTP; POST to `/api/mcp/` with trailing slash — bare `/api/mcp`
 307-redirects). The REST gateway needs `grpcGatewayPathStrip: true` in
 config.yaml (otherwise the `/api` prefix isn't stripped and routes 404).
+
+`SetMode` (write) can be driven three ways once a real device is loaded:
+`grpcurl -plaintext -d '{"serial_number":"<sn>","mode":"MODE_HEAT_PUMP"}' :8081 econet.v1alpha1.EconetService/SetMode`,
+`POST /api/v1alpha1/devices/<sn>/mode` with `{"mode":"MODE_HEAT_PUMP"}`, or the
+MCP `econet_v1alpha1_EconetService_SetMode` tool. **Unverified against a live
+account**: whether the user token is authorized to publish over REST (same
+authority as MQTT, but Rheem's topic ACL is untested) — this is the one thing
+that can't be confirmed without a real unit.
@@ -4,6 +4,58 @@ All notable changes to econet-exporter are documented here. The format is
 based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this
 project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

+## [Unreleased]
+
+## [v0.4.0] - 2026-07-16
+
+### Added
+
+* **Mode control (first mutating RPC).** New `SetMode` RPC on `EconetService`,
+  exposed over gRPC, the REST gateway (`POST /v1alpha1/devices/{serial}/mode`),
+  and as an MCP tool. Writes go out over ClearBlade's REST publish endpoint
+  (`POST /message/{systemKey}/publish`, topic `user/{account_id}/device/desired`,
+  payload `{"@MODE": <idx>, ...}`) — the HTTP equivalent of the app's MQTT
+  publish, so **no MQTT client is required**. The mode is applied
+  asynchronously by the Rheem cloud and only reflected on a later poll.
+* `Mode` proto enum (`off`, `electric`, `energy-saving`, `heat-pump`,
+  `high-demand`, `gas`, `performance`, `vacation`) with protovalidate rejecting
+  the unspecified value. The enum flows into the MCP tool's input schema, so
+  clients see the valid modes. Supported modes are validated per-device against
+  the unit's reported mode list (`@MODE` is published as an index into it).
+* Generated MCP server (`econetmcpgen`) built from the proto via
+  `protoc-gen-go-mcp`, now mounted at `/api/mcp`, forwarding in-process to the
+  gRPC server through the go-sdk adapter. The hand-written `econetmcp` package
+  is retained as a one-line-switchable fallback in `pkg/econet/econet.go`.
+* Optional Grafana dashboard shipped as a ConfigMap in the Helm chart. Enable
+  with `hull.config.settings.grafanaDashboard.enabled=true`; the ConfigMap is
+  labeled `grafana_dashboard: "1"` for the Grafana sidecar to auto-import. The
+  dashboard uses the default Prometheus datasource (no hard-coded UID) and has a
+  multi-select `Device` filter driven by `econet_friendly_name`. Covers connect/
+  heating/mode/setpoint/hot-water/alerts, setpoint range, hot-water availability,
+  energy + cost + water usage, a heating-state timeline, WiFi signal, and a
+  device-info table. Sidecar label/value and Grafana folder are configurable.
+
+### Changed
+
+* MCP tool surface changed with the switch to generated tools: `/api/mcp` now
+  serves `econet_v1alpha1_EconetService_ListDevices`, `_GetDevice`, and
+  `_SetMode` (structured JSON output) instead of the single `list_water_heaters`
+  summary tool. Switch back via the aliased import in `pkg/econet/econet.go`.
+
+## [v0.3.0] - 2026-07-05
+
+### Changed
+
+* Replaced the third-party `kevinburke/rheemcloud-go` dependency and its MQTT
+  coupling with an in-repo `econetclient` REST poller that talks directly to
+  the Rheem/EcoNet cloud REST API. Device state (including `@RUNNING`, `@MODE`,
+  and `@STATUS`) is sourced from the REST `getUserDataForApp` payload, so no
+  MQTT connection is required.
+
+### Removed
+
+* `rheemcloud` package and its `go.mod`/`go.sum` entries.
+
 ## [v0.2.0] - 2026-07-05

 ### Added
@@ -1,8 +1,7 @@
 # econet-exporter 🔥💧

-An exporter for **Rheem EcoNet / Rheemcloud** water-heater data. It keeps a
-long-lived connection to the Rheem cloud (via
-[`rheemcloud-go`](https://github.com/kevinburke/rheemcloud-go)) and exposes device
+An exporter for **Rheem EcoNet / Rheemcloud** water-heater data. It polls the
+Rheem cloud REST API (ClearBlade backend) on an interval and exposes device
 state and usage three ways:

 - **OTEL metrics** served for Prometheus scraping at `/metrics` (live state +
@@ -25,7 +24,7 @@ go-app defaults. Custom fields (see `pkg/config/custom.go`):
 | `econetEmail` | `ECONET_EMAIL` | Rheem account email |
 | `econetPassword` | `ECONET_PASSWORD` | Prefer the env var; keep out of config.yaml |
 | `costPerKWH` | `ECONET_COST_PER_KWH` | **US dollars per kWh** (e.g. `0.18` = 18¢), not cents |
-| `usageInterval` | `ECONET_USAGE_INTERVAL` | Energy/water poll interval (default `5m`) |
+| `pollInterval` | `ECONET_POLL_INTERVAL` | How often device state + daily energy/water usage are re-fetched over REST (default `1m`) |

 Everything under the go-app `AppConfig` (logging, otel, http, grpc) is also
 env-overridable with `APP_*` variables — see `env-sample`.
@@ -47,20 +46,43 @@ Then:

 Per-device gauges labeled `econet.serial`, `econet.device_id`,
 `econet.friendly_name`: `econet_setpoint_fahrenheit`, `econet_connected`,
-`econet_running`, `econet_enabled`, `econet_away`,
-`econet_hot_water_availability_percent`, `econet_alert_count`,
-`econet_wifi_signal_db`, `econet_device_info` (adds `type`/`generic_type`/`mode`).
+`econet_running` (adds a `running_state` label naming the active stage, e.g.
+`compressor-running` / `element-running` / `idle`), `econet_enabled`,
+`econet_away`, `econet_hot_water_availability_percent`, `econet_alert_count`,
+`econet_wifi_signal_db`, `econet_mode` (enum: `1` for the current mode, `0`
+otherwise, via a `mode` label), `econet_device_info` (adds
+`type`/`generic_type`/`mode`).
 Polled usage: `econet_energy_usage_kwh`, `econet_water_usage_gallons`,
 `econet_energy_cost_dollars`.

+> Note: `econet_wifi_signal_db` is only delivered over Rheem's MQTT push stream,
+> which this exporter does not use — it stays at `0`.
+
+### 📈 Grafana dashboard
+
+The Helm chart ships a ready-made Grafana dashboard
+(`helm/dashboards/econet-exporter.json`). It is **off by default**; enable it by
+setting `hull.config.settings.grafanaDashboard.enabled=true`, which renders a
+ConfigMap labeled `grafana_dashboard: "1"` for the [Grafana sidecar](https://github.com/grafana/helm-charts/tree/main/charts/grafana#sidecar-for-dashboards)
+to auto-import. The dashboard uses the **default Prometheus datasource** (no
+hard-coded UID) and has a multi-select **Device** filter backed by
+`econet_friendly_name`. Tunables under `grafanaDashboard`: `label` / `labelValue`
+(match your sidecar's watch config) and `folder` (target Grafana folder).
+
+```sh
+helm upgrade --install econet ./helm \
+  --set hull.config.settings.grafanaDashboard.enabled=true
+```
+
 ## 📂 Project Structure
 - `proto/econet/v1alpha1/` - Protobuf definitions (source).
 - `api/econet/v1alpha1/` - Generated proto, grpc, grpc-gateway code.
 - `pkg/config/` - Custom config merged with go-app configuration.
- `pkg/econet/` - `EconetService` (owns the rheemcloud client) plus:
+- `pkg/econet/` - `EconetService` (owns the REST client + poll ticker) plus:
+  - `econetclient/` - minimal EcoNet REST client (auth, devices, usage).
  - `econetgrpc/` - gRPC `EconetService` implementation.
  - `econetmcp/` - MCP server + tools.
-  - `econetmetrics/` - OTEL observable gauges + usage poller.
+  - `econetmetrics/` - OTEL observable gauges.
 - `helm/` - Helm chart for Kubernetes deployment.
 - `.gitea/workflows/` - CI pipelines.

@@ -24,6 +24,77 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// Mode is a settable operating mode for a water heater. The values mirror the
+// kebab-case slugs reported in Device.mode. Not every device supports every
+// mode; the supported set is device-specific (derived from the unit's reported
+// mode list), so SetMode validates against the target device.
+type Mode int32
+
+const (
+	Mode_MODE_UNSPECIFIED   Mode = 0
+	Mode_MODE_OFF           Mode = 1
+	Mode_MODE_ELECTRIC      Mode = 2
+	Mode_MODE_ENERGY_SAVING Mode = 3
+	Mode_MODE_HEAT_PUMP     Mode = 4
+	Mode_MODE_HIGH_DEMAND   Mode = 5
+	Mode_MODE_GAS           Mode = 6
+	Mode_MODE_PERFORMANCE   Mode = 7
+	Mode_MODE_VACATION      Mode = 8
+)
+
+// Enum value maps for Mode.
+var (
+	Mode_name = map[int32]string{
+		0: "MODE_UNSPECIFIED",
+		1: "MODE_OFF",
+		2: "MODE_ELECTRIC",
+		3: "MODE_ENERGY_SAVING",
+		4: "MODE_HEAT_PUMP",
+		5: "MODE_HIGH_DEMAND",
+		6: "MODE_GAS",
+		7: "MODE_PERFORMANCE",
+		8: "MODE_VACATION",
+	}
+	Mode_value = map[string]int32{
+		"MODE_UNSPECIFIED":   0,
+		"MODE_OFF":           1,
+		"MODE_ELECTRIC":      2,
+		"MODE_ENERGY_SAVING": 3,
+		"MODE_HEAT_PUMP":     4,
+		"MODE_HIGH_DEMAND":   5,
+		"MODE_GAS":           6,
+		"MODE_PERFORMANCE":   7,
+		"MODE_VACATION":      8,
+	}
+)
+
+func (x Mode) Enum() *Mode {
+	p := new(Mode)
+	*p = x
+	return p
+}
+
+func (x Mode) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Mode) Descriptor() protoreflect.EnumDescriptor {
+	return file_econet_v1alpha1_econet_proto_enumTypes[0].Descriptor()
+}
+
+func (Mode) Type() protoreflect.EnumType {
+	return &file_econet_v1alpha1_econet_proto_enumTypes[0]
+}
+
+func (x Mode) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Mode.Descriptor instead.
+func (Mode) EnumDescriptor() ([]byte, []int) {
+	return file_econet_v1alpha1_econet_proto_rawDescGZIP(), []int{0}
+}
+
 // Device is the live state of a single Rheem EcoNet device
 // (typically a water heater) as reported by the Rheem cloud.
 type Device struct {
@@ -374,6 +445,104 @@ func (x *GetDeviceResponse) GetDevice() *Device {
 	return nil
 }

+type SetModeRequest struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	SerialNumber  string                 `protobuf:"bytes,1,opt,name=serial_number,json=serialNumber,proto3" json:"serial_number,omitempty"`
+	Mode          Mode                   `protobuf:"varint,2,opt,name=mode,proto3,enum=econet.v1alpha1.Mode" json:"mode,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *SetModeRequest) Reset() {
+	*x = SetModeRequest{}
+	mi := &file_econet_v1alpha1_econet_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *SetModeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SetModeRequest) ProtoMessage() {}
+
+func (x *SetModeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_econet_v1alpha1_econet_proto_msgTypes[5]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SetModeRequest.ProtoReflect.Descriptor instead.
+func (*SetModeRequest) Descriptor() ([]byte, []int) {
+	return file_econet_v1alpha1_econet_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *SetModeRequest) GetSerialNumber() string {
+	if x != nil {
+		return x.SerialNumber
+	}
+	return ""
+}
+
+func (x *SetModeRequest) GetMode() Mode {
+	if x != nil {
+		return x.Mode
+	}
+	return Mode_MODE_UNSPECIFIED
+}
+
+type SetModeResponse struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// Last-known device state. The mode change is applied asynchronously by the
+	// Rheem cloud, so this reflects the requested mode only after a later poll.
+	Device        *Device `protobuf:"bytes,1,opt,name=device,proto3" json:"device,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *SetModeResponse) Reset() {
+	*x = SetModeResponse{}
+	mi := &file_econet_v1alpha1_econet_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *SetModeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SetModeResponse) ProtoMessage() {}
+
+func (x *SetModeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_econet_v1alpha1_econet_proto_msgTypes[6]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SetModeResponse.ProtoReflect.Descriptor instead.
+func (*SetModeResponse) Descriptor() ([]byte, []int) {
+	return file_econet_v1alpha1_econet_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *SetModeResponse) GetDevice() *Device {
+	if x != nil {
+		return x.Device
+	}
+	return nil
+}
+
 var File_econet_v1alpha1_econet_proto protoreflect.FileDescriptor

 const file_econet_v1alpha1_econet_proto_rawDesc = "" +
@@ -407,10 +576,27 @@ const file_econet_v1alpha1_econet_proto_rawDesc = "" +
 	"\x10GetDeviceRequest\x12,\n" +
 	"\rserial_number\x18\x01 \x01(\tB\a\xbaH\x04r\x02\x10\x01R\fserialNumber\"D\n" +
 	"\x11GetDeviceResponse\x12/\n" +
-	"\x06device\x18\x01 \x01(\v2\x17.econet.v1alpha1.DeviceR\x06device2\x83\x02\n" +
+	"\x06device\x18\x01 \x01(\v2\x17.econet.v1alpha1.DeviceR\x06device\"u\n" +
+	"\x0eSetModeRequest\x12,\n" +
+	"\rserial_number\x18\x01 \x01(\tB\a\xbaH\x04r\x02\x10\x01R\fserialNumber\x125\n" +
+	"\x04mode\x18\x02 \x01(\x0e2\x15.econet.v1alpha1.ModeB\n" +
+	"\xbaH\a\x82\x01\x04\x10\x01 \x00R\x04mode\"B\n" +
+	"\x0fSetModeResponse\x12/\n" +
+	"\x06device\x18\x01 \x01(\v2\x17.econet.v1alpha1.DeviceR\x06device*\xb6\x01\n" +
+	"\x04Mode\x12\x14\n" +
+	"\x10MODE_UNSPECIFIED\x10\x00\x12\f\n" +
+	"\bMODE_OFF\x10\x01\x12\x11\n" +
+	"\rMODE_ELECTRIC\x10\x02\x12\x16\n" +
+	"\x12MODE_ENERGY_SAVING\x10\x03\x12\x12\n" +
+	"\x0eMODE_HEAT_PUMP\x10\x04\x12\x14\n" +
+	"\x10MODE_HIGH_DEMAND\x10\x05\x12\f\n" +
+	"\bMODE_GAS\x10\x06\x12\x14\n" +
+	"\x10MODE_PERFORMANCE\x10\a\x12\x11\n" +
+	"\rMODE_VACATION\x10\b2\x84\x03\n" +
 	"\rEconetService\x12s\n" +
 	"\vListDevices\x12#.econet.v1alpha1.ListDevicesRequest\x1a$.econet.v1alpha1.ListDevicesResponse\"\x19\x82\xd3\xe4\x93\x02\x13\x12\x11/v1alpha1/devices\x12}\n" +
-	"\tGetDevice\x12!.econet.v1alpha1.GetDeviceRequest\x1a\".econet.v1alpha1.GetDeviceResponse\")\x82\xd3\xe4\x93\x02#\x12!/v1alpha1/devices/{serial_number}B\xcb\x01\n" +
+	"\tGetDevice\x12!.econet.v1alpha1.GetDeviceRequest\x1a\".econet.v1alpha1.GetDeviceResponse\")\x82\xd3\xe4\x93\x02#\x12!/v1alpha1/devices/{serial_number}\x12\x7f\n" +
+	"\aSetMode\x12\x1f.econet.v1alpha1.SetModeRequest\x1a .econet.v1alpha1.SetModeResponse\"1\x82\xd3\xe4\x93\x02+:\x01*\"&/v1alpha1/devices/{serial_number}/modeB\xcb\x01\n" +
 	"\x13com.econet.v1alpha1B\vEconetProtoP\x01ZJgitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1\xa2\x02\x03EXX\xaa\x02\x0fEconet.V1alpha1\xca\x02\x0fEconet\\V1alpha1\xe2\x02\x1bEconet\\V1alpha1\\GPBMetadata\xea\x02\x10Econet::V1alpha1b\x06proto3"

 var (
@@ -425,28 +611,36 @@ func file_econet_v1alpha1_econet_proto_rawDescGZIP() []byte {
 	return file_econet_v1alpha1_econet_proto_rawDescData
 }

-var file_econet_v1alpha1_econet_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_econet_v1alpha1_econet_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_econet_v1alpha1_econet_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_econet_v1alpha1_econet_proto_goTypes = []any{
-	(*Device)(nil),                // 0: econet.v1alpha1.Device
-	(*ListDevicesRequest)(nil),    // 1: econet.v1alpha1.ListDevicesRequest
-	(*ListDevicesResponse)(nil),   // 2: econet.v1alpha1.ListDevicesResponse
-	(*GetDeviceRequest)(nil),      // 3: econet.v1alpha1.GetDeviceRequest
-	(*GetDeviceResponse)(nil),     // 4: econet.v1alpha1.GetDeviceResponse
-	(*timestamppb.Timestamp)(nil), // 5: google.protobuf.Timestamp
+	(Mode)(0),                     // 0: econet.v1alpha1.Mode
+	(*Device)(nil),                // 1: econet.v1alpha1.Device
+	(*ListDevicesRequest)(nil),    // 2: econet.v1alpha1.ListDevicesRequest
+	(*ListDevicesResponse)(nil),   // 3: econet.v1alpha1.ListDevicesResponse
+	(*GetDeviceRequest)(nil),      // 4: econet.v1alpha1.GetDeviceRequest
+	(*GetDeviceResponse)(nil),     // 5: econet.v1alpha1.GetDeviceResponse
+	(*SetModeRequest)(nil),        // 6: econet.v1alpha1.SetModeRequest
+	(*SetModeResponse)(nil),       // 7: econet.v1alpha1.SetModeResponse
+	(*timestamppb.Timestamp)(nil), // 8: google.protobuf.Timestamp
 }
 var file_econet_v1alpha1_econet_proto_depIdxs = []int32{
-	5, // 0: econet.v1alpha1.Device.last_updated:type_name -> google.protobuf.Timestamp
-	0, // 1: econet.v1alpha1.ListDevicesResponse.devices:type_name -> econet.v1alpha1.Device
-	0, // 2: econet.v1alpha1.GetDeviceResponse.device:type_name -> econet.v1alpha1.Device
-	1, // 3: econet.v1alpha1.EconetService.ListDevices:input_type -> econet.v1alpha1.ListDevicesRequest
-	3, // 4: econet.v1alpha1.EconetService.GetDevice:input_type -> econet.v1alpha1.GetDeviceRequest
-	2, // 5: econet.v1alpha1.EconetService.ListDevices:output_type -> econet.v1alpha1.ListDevicesResponse
-	4, // 6: econet.v1alpha1.EconetService.GetDevice:output_type -> econet.v1alpha1.GetDeviceResponse
-	5, // [5:7] is the sub-list for method output_type
-	3, // [3:5] is the sub-list for method input_type
-	3, // [3:3] is the sub-list for extension type_name
-	3, // [3:3] is the sub-list for extension extendee
-	0, // [0:3] is the sub-list for field type_name
+	8, // 0: econet.v1alpha1.Device.last_updated:type_name -> google.protobuf.Timestamp
+	1, // 1: econet.v1alpha1.ListDevicesResponse.devices:type_name -> econet.v1alpha1.Device
+	1, // 2: econet.v1alpha1.GetDeviceResponse.device:type_name -> econet.v1alpha1.Device
+	0, // 3: econet.v1alpha1.SetModeRequest.mode:type_name -> econet.v1alpha1.Mode
+	1, // 4: econet.v1alpha1.SetModeResponse.device:type_name -> econet.v1alpha1.Device
+	2, // 5: econet.v1alpha1.EconetService.ListDevices:input_type -> econet.v1alpha1.ListDevicesRequest
+	4, // 6: econet.v1alpha1.EconetService.GetDevice:input_type -> econet.v1alpha1.GetDeviceRequest
+	6, // 7: econet.v1alpha1.EconetService.SetMode:input_type -> econet.v1alpha1.SetModeRequest
+	3, // 8: econet.v1alpha1.EconetService.ListDevices:output_type -> econet.v1alpha1.ListDevicesResponse
+	5, // 9: econet.v1alpha1.EconetService.GetDevice:output_type -> econet.v1alpha1.GetDeviceResponse
+	7, // 10: econet.v1alpha1.EconetService.SetMode:output_type -> econet.v1alpha1.SetModeResponse
+	8, // [8:11] is the sub-list for method output_type
+	5, // [5:8] is the sub-list for method input_type
+	5, // [5:5] is the sub-list for extension type_name
+	5, // [5:5] is the sub-list for extension extendee
+	0, // [0:5] is the sub-list for field type_name
 }

 func init() { file_econet_v1alpha1_econet_proto_init() }
@@ -459,13 +653,14 @@ func file_econet_v1alpha1_econet_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_econet_v1alpha1_econet_proto_rawDesc), len(file_econet_v1alpha1_econet_proto_rawDesc)),
-			NumEnums:      0,
-			NumMessages:   5,
+			NumEnums:      1,
+			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
 		GoTypes:           file_econet_v1alpha1_econet_proto_goTypes,
 		DependencyIndexes: file_econet_v1alpha1_econet_proto_depIdxs,
+		EnumInfos:         file_econet_v1alpha1_econet_proto_enumTypes,
 		MessageInfos:      file_econet_v1alpha1_econet_proto_msgTypes,
 	}.Build()
 	File_econet_v1alpha1_econet_proto = out.File
@@ -95,6 +95,51 @@ func local_request_EconetService_GetDevice_0(ctx context.Context, marshaler runt
 	return msg, metadata, err
 }

+func request_EconetService_SetMode_0(ctx context.Context, marshaler runtime.Marshaler, client EconetServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq SetModeRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && !errors.Is(err, io.EOF) {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if req.Body != nil {
+		_, _ = io.Copy(io.Discard, req.Body)
+	}
+	val, ok := pathParams["serial_number"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "serial_number")
+	}
+	protoReq.SerialNumber, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "serial_number", err)
+	}
+	msg, err := client.SetMode(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_EconetService_SetMode_0(ctx context.Context, marshaler runtime.Marshaler, server EconetServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq SetModeRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && !errors.Is(err, io.EOF) {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	val, ok := pathParams["serial_number"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "serial_number")
+	}
+	protoReq.SerialNumber, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "serial_number", err)
+	}
+	msg, err := server.SetMode(ctx, &protoReq)
+	return msg, metadata, err
+}
+
 // RegisterEconetServiceHandlerServer registers the http handlers for service EconetService to "mux".
 // UnaryRPC     :call EconetServiceServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -141,6 +186,26 @@ func RegisterEconetServiceHandlerServer(ctx context.Context, mux *runtime.ServeM
 		}
 		forward_EconetService_GetDevice_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
 	})
+	mux.Handle(http.MethodPost, pattern_EconetService_SetMode_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/econet.v1alpha1.EconetService/SetMode", runtime.WithHTTPPathPattern("/v1alpha1/devices/{serial_number}/mode"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_EconetService_SetMode_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_EconetService_SetMode_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})

 	return nil
 }
@@ -215,15 +280,34 @@ func RegisterEconetServiceHandlerClient(ctx context.Context, mux *runtime.ServeM
 		}
 		forward_EconetService_GetDevice_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
 	})
+	mux.Handle(http.MethodPost, pattern_EconetService_SetMode_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/econet.v1alpha1.EconetService/SetMode", runtime.WithHTTPPathPattern("/v1alpha1/devices/{serial_number}/mode"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_EconetService_SetMode_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_EconetService_SetMode_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
 	return nil
 }

 var (
 	pattern_EconetService_ListDevices_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1alpha1", "devices"}, ""))
 	pattern_EconetService_GetDevice_0   = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1alpha1", "devices", "serial_number"}, ""))
+	pattern_EconetService_SetMode_0     = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3}, []string{"v1alpha1", "devices", "serial_number", "mode"}, ""))
 )

 var (
 	forward_EconetService_ListDevices_0 = runtime.ForwardResponseMessage
 	forward_EconetService_GetDevice_0   = runtime.ForwardResponseMessage
+	forward_EconetService_SetMode_0     = runtime.ForwardResponseMessage
 )
@@ -21,6 +21,7 @@ const _ = grpc.SupportPackageIsVersion9
 const (
 	EconetService_ListDevices_FullMethodName = "/econet.v1alpha1.EconetService/ListDevices"
 	EconetService_GetDevice_FullMethodName   = "/econet.v1alpha1.EconetService/GetDevice"
+	EconetService_SetMode_FullMethodName     = "/econet.v1alpha1.EconetService/SetMode"
 )

 // EconetServiceClient is the client API for EconetService service.
@@ -31,6 +32,7 @@ const (
 type EconetServiceClient interface {
 	ListDevices(ctx context.Context, in *ListDevicesRequest, opts ...grpc.CallOption) (*ListDevicesResponse, error)
 	GetDevice(ctx context.Context, in *GetDeviceRequest, opts ...grpc.CallOption) (*GetDeviceResponse, error)
+	SetMode(ctx context.Context, in *SetModeRequest, opts ...grpc.CallOption) (*SetModeResponse, error)
 }

 type econetServiceClient struct {
@@ -61,6 +63,16 @@ func (c *econetServiceClient) GetDevice(ctx context.Context, in *GetDeviceReques
 	return out, nil
 }

+func (c *econetServiceClient) SetMode(ctx context.Context, in *SetModeRequest, opts ...grpc.CallOption) (*SetModeResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(SetModeResponse)
+	err := c.cc.Invoke(ctx, EconetService_SetMode_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // EconetServiceServer is the server API for EconetService service.
 // All implementations should embed UnimplementedEconetServiceServer
 // for forward compatibility.
@@ -69,6 +81,7 @@ func (c *econetServiceClient) GetDevice(ctx context.Context, in *GetDeviceReques
 type EconetServiceServer interface {
 	ListDevices(context.Context, *ListDevicesRequest) (*ListDevicesResponse, error)
 	GetDevice(context.Context, *GetDeviceRequest) (*GetDeviceResponse, error)
+	SetMode(context.Context, *SetModeRequest) (*SetModeResponse, error)
 }

 // UnimplementedEconetServiceServer should be embedded to have
@@ -84,6 +97,9 @@ func (UnimplementedEconetServiceServer) ListDevices(context.Context, *ListDevice
 func (UnimplementedEconetServiceServer) GetDevice(context.Context, *GetDeviceRequest) (*GetDeviceResponse, error) {
 	return nil, status.Error(codes.Unimplemented, "method GetDevice not implemented")
 }
+func (UnimplementedEconetServiceServer) SetMode(context.Context, *SetModeRequest) (*SetModeResponse, error) {
+	return nil, status.Error(codes.Unimplemented, "method SetMode not implemented")
+}
 func (UnimplementedEconetServiceServer) testEmbeddedByValue() {}

 // UnsafeEconetServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -140,6 +156,24 @@ func _EconetService_GetDevice_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }

+func _EconetService_SetMode_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SetModeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(EconetServiceServer).SetMode(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: EconetService_SetMode_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(EconetServiceServer).SetMode(ctx, req.(*SetModeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // EconetService_ServiceDesc is the grpc.ServiceDesc for EconetService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -155,6 +189,10 @@ var EconetService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "GetDevice",
 			Handler:    _EconetService_GetDevice_Handler,
 		},
+		{
+			MethodName: "SetMode",
+			Handler:    _EconetService_SetMode_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "econet/v1alpha1/econet.proto",
@@ -24,5 +24,9 @@ plugins:
    opt:
      - merge_file_name=econet-exporter
      - allow_merge=true
+  - local: ["go", "run", "github.com/redpanda-data/protoc-gen-go-mcp/cmd/protoc-gen-go-mcp@latest"]
+    out: api
+    opt:
+      - paths=source_relative
 inputs:
  - directory: proto
@@ -2,8 +2,8 @@
 version: v2
 deps:
  - name: buf.build/bufbuild/protovalidate
-    commit: 50325440f8f24053b047484a6bf60b76
-    digest: b5:74cb6f5c0853c3c10aafc701614194bbd63326bdb8ef4068214454b8894b03ba4113e04b3a33a8321cdf05336e37db4dc14a5e2495db8462566914f36086ba31
+    commit: 435963d1631043e694e56e6bcc3c79c3
+    digest: b5:f4ea07ad2dd94bd7243562f9908b9fb104feef8076040c89d9f7c1dedc074de4d4ce2b997686ef4400f3eccb765a7cfc20ed4acdd70b9a3699351245c61dba97
  - name: buf.build/googleapis/googleapis
    commit: c17df5b2beca46928cc87d5656bd5343
    digest: b5:648a01e0170d4512dea7d564016165decd1ed6e34bef79fe54753e51ad7e27545709ad9157d7551270147d551155c595a2fb0bf5bb33b1c83040ddbce915c604
@@ -4,7 +4,7 @@
 # NOTE: Prefer setting econetPassword via the ECONET_PASSWORD env var
 econetEmail: ""
 costPerKWH: 0.0 # US dollars per kWh (e.g. 0.18 = 18 cents), not cents
-usageInterval: 5m
+pollInterval: 1m # how often device state + daily usage are re-fetched over REST

 # go-app config
 name: econet-exporter
@@ -67,9 +67,55 @@
          "EconetService"
        ]
      }
+    },
+    "/v1alpha1/devices/{serialNumber}/mode": {
+      "post": {
+        "operationId": "EconetService_SetMode",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1alpha1SetModeResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "serialNumber",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "body",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/EconetServiceSetModeBody"
+            }
+          }
+        ],
+        "tags": [
+          "EconetService"
+        ]
+      }
    }
  },
  "definitions": {
+    "EconetServiceSetModeBody": {
+      "type": "object",
+      "properties": {
+        "mode": {
+          "$ref": "#/definitions/v1alpha1Mode"
+        }
+      }
+    },
    "protobufAny": {
      "type": "object",
      "properties": {
@@ -190,6 +236,31 @@
          }
        }
      }
+    },
+    "v1alpha1Mode": {
+      "type": "string",
+      "enum": [
+        "MODE_UNSPECIFIED",
+        "MODE_OFF",
+        "MODE_ELECTRIC",
+        "MODE_ENERGY_SAVING",
+        "MODE_HEAT_PUMP",
+        "MODE_HIGH_DEMAND",
+        "MODE_GAS",
+        "MODE_PERFORMANCE",
+        "MODE_VACATION"
+      ],
+      "default": "MODE_UNSPECIFIED",
+      "description": "Mode is a settable operating mode for a water heater. The values mirror the\nkebab-case slugs reported in Device.mode. Not every device supports every\nmode; the supported set is device-specific (derived from the unit's reported\nmode list), so SetMode validates against the target device."
+    },
+    "v1alpha1SetModeResponse": {
+      "type": "object",
+      "properties": {
+        "device": {
+          "$ref": "#/definitions/v1alpha1Device",
+          "description": "Last-known device state. The mode change is applied asynchronously by the\nRheem cloud, so this reflects the requested mode only after a later poll."
+        }
+      }
    }
  }
 }
@@ -124,6 +124,7 @@
  },
  "properties": {
    "costPerKWH": {
+      "default": 0.19,
      "type": "number"
    },
    "econetEmail": {
@@ -132,6 +133,10 @@
    "econetPassword": {
      "type": "string"
    },
+    "econetTLSInsecure": {
+      "default": false,
+      "type": "boolean"
+    },
    "environment": {
      "type": "string"
    },
@@ -150,7 +155,7 @@
    "otel": {
      "$ref": "#/definitions/ConfigOTELConfig"
    },
-    "usageInterval": {
+    "pollInterval": {
      "type": "integer"
    },
    "version": {
@@ -1,13 +1,14 @@
 module gitea.libretechconsulting.com/rmcguire/econet-exporter

-go 1.26
+go 1.26.1

 require (
 	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.36.11-20260415201107-50325440f8f2.1
+	connectrpc.com/connect v1.20.0
 	gitea.libretechconsulting.com/rmcguire/go-app v0.17.1
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0
-	github.com/kevinburke/rheemcloud-go v0.1.1
 	github.com/modelcontextprotocol/go-sdk v1.6.1
+	github.com/redpanda-data/protoc-gen-go-mcp v0.0.0-20260709214304-372b2d56e470
 	github.com/rs/zerolog v1.35.1
 	go.opentelemetry.io/otel/metric v1.44.0
 	go.opentelemetry.io/otel/trace v1.44.0
@@ -37,20 +38,18 @@ require (
 )

 require (
+	buf.build/gen/go/redpandadata/common/protocolbuffers/go v1.34.2-20240917150400-3f349e63f44a.2 // indirect
 	buf.build/go/protovalidate v1.2.0 // indirect
 	cel.dev/expr v0.25.2 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/eclipse/paho.mqtt.golang v1.5.1 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/google/cel-go v0.29.1 // indirect
 	github.com/google/jsonschema-go v0.4.3 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/gorilla/websocket v1.5.3 // indirect
-	github.com/kevinburke/rest v0.0.0-20260604005914-d145d8a0294b // indirect
 	github.com/mattn/go-colorable v0.1.15 // indirect
 	github.com/mattn/go-isatty v0.0.22 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
@@ -59,6 +58,7 @@ require (
 	github.com/prometheus/common v0.69.0 // indirect
 	github.com/prometheus/otlptranslator v1.0.0 // indirect
 	github.com/prometheus/procfs v0.21.1 // indirect
+	github.com/redpanda-data/common-go/api v0.0.0-20250801174835-9eea07f1ea06 // indirect
 	github.com/rs/cors v1.11.1 // indirect
 	github.com/segmentio/asm v1.2.1 // indirect
 	github.com/segmentio/encoding v0.5.4 // indirect
@@ -70,7 +70,6 @@ require (
 	golang.org/x/exp v0.0.0-20260611194520-c48552f49976 // indirect
 	golang.org/x/net v0.56.0 // indirect
 	golang.org/x/oauth2 v0.36.0 // indirect
-	golang.org/x/sync v0.21.0 // indirect
 	golang.org/x/sys v0.46.0 // indirect
 	golang.org/x/text v0.38.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260630182238-925bb5da69e7 // indirect
@@ -1,9 +1,13 @@
 buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.36.11-20260415201107-50325440f8f2.1 h1:s6hzCXtND/ICdGPTMGk7C+/BFlr2Jg5GyH0NKf4XGXg=
 buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.36.11-20260415201107-50325440f8f2.1/go.mod h1:tvtbpgaVXZX4g6Pn+AnzFycuRK3MOz5HJfEGeEllXYM=
+buf.build/gen/go/redpandadata/common/protocolbuffers/go v1.34.2-20240917150400-3f349e63f44a.2 h1:JyGBchZNUPlQ7/qjieeKq/Cy+/i1vc0H+cIniGZNSFg=
+buf.build/gen/go/redpandadata/common/protocolbuffers/go v1.34.2-20240917150400-3f349e63f44a.2/go.mod h1:wThyg02xJx4K/DA5fg0QlKts8XVPyTT86JC8hPfEzno=
 buf.build/go/protovalidate v1.2.0 h1:DQVrUWkmGTBij+kOYv/x2LLxwcLaGKMdzShj1/6/3H0=
 buf.build/go/protovalidate v1.2.0/go.mod h1:7rYiQEhqvAipoazpVNBBH2S2f8bjG4huMVy1V2Yofn4=
 cel.dev/expr v0.25.2 h1:K6j46C81hXtZQfuX60cVWQFBJahKSE2gfRbNuvr5bFs=
 cel.dev/expr v0.25.2/go.mod h1:hrXvqGP6G6gyx8UAHSHJ5RGk//1Oj5nXQ2NI02Nrsg4=
+connectrpc.com/connect v1.20.0 h1:6TNDAB+WeNd2uolWNlYczB5E0KNNaVMNUEx8JEUsPmQ=
+connectrpc.com/connect v1.20.0/go.mod h1:A2ygJrukXwWy32vkCAAHNVguZrqZ+jeZ9rGRnGR4dN4=
 gitea.libretechconsulting.com/rmcguire/go-app v0.17.1 h1:OdUNAXRoDpB5sC3KdaJC7Rav8MmxiRZC0fRx9YNH1Ks=
 gitea.libretechconsulting.com/rmcguire/go-app v0.17.1/go.mod h1:YBygVa9JBYAP+ibF8FevN1KUe3h5GHWxAdFyU6I8QgA=
 github.com/antlr4-go/antlr/v4 v4.13.1 h1:SqQKkuVZ+zWkMMNkjy5FZe5mr5WURWnlpmOuzYWrPrQ=
@@ -24,8 +28,6 @@ github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UF
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/eclipse/paho.mqtt.golang v1.5.1 h1:/VSOv3oDLlpqR2Epjn1Q7b2bSTplJIeV2ISgCl2W7nE=
-github.com/eclipse/paho.mqtt.golang v1.5.1/go.mod h1:1/yJCneuyOoCOzKSsOTUc0AJfpsItBGWvYpBLimhArU=
 github.com/felixge/httpsnoop v1.1.0 h1:3YtUj32ZZkqZtt3sZZsClsymw/QDuVfpNhoA31zeORc=
 github.com/felixge/httpsnoop v1.1.0/go.mod h1:Zqxgdd+1Rkcz8euOqdr7lqgCRJztwr5hp9vDSi5UZCE=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
@@ -45,18 +47,12 @@ github.com/google/jsonschema-go v0.4.3 h1:/DBOLZTfDow7pe2GmaJNhltueGTtDKICi8V8p+
 github.com/google/jsonschema-go v0.4.3/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
-github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3 h1:B+8ClL/kCQkRiU82d9xajRPKYMrB7E0MbtzWVi1K4ns=
 github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3/go.mod h1:NbCUVmiS4foBGBHOYlCT25+YmGpJ32dZPi75pGEUpj4=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0 h1:5VipnvEpbqr2gA2VbM+nYVbkIF28c5ZQfqCBQ5g2xfk=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0/go.mod h1:Hyl3n6Twe1hvtd9XUXDec4pTvgMSEixRuQKPTMH2bNs=
 github.com/iancoleman/orderedmap v0.3.0 h1:5cbR2grmZR/DiVt+VJopEhtVs9YGInGIxAoMJn+Ichc=
 github.com/iancoleman/orderedmap v0.3.0/go.mod h1:XuLcCUkdL5owUCQeF2Ue9uuw1EptkJDkXXS7VoV7XGE=
-github.com/kevinburke/rest v0.0.0-20260604005914-d145d8a0294b h1:9ZWwhlz+lmPlXCz37dkRVMgK+iIwkFyQBogC2oWds/A=
-github.com/kevinburke/rest v0.0.0-20260604005914-d145d8a0294b/go.mod h1:x35n2Fa5sM/IwpMDk6B9f7n6FkcBFX3yV9diIRfqxQc=
-github.com/kevinburke/rheemcloud-go v0.1.1 h1:PsrpOso9rEeyATlAfDHjKx5E8C2TJseDwfeRvw4uzH4=
-github.com/kevinburke/rheemcloud-go v0.1.1/go.mod h1:17QQqbT/YPQDnR3m+67EV7Wuve0onhKeiLAMcy1br1U=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
@@ -73,6 +69,8 @@ github.com/modelcontextprotocol/go-sdk v1.6.1 h1:0zOSupjKUxPKSocPT1Wtago+mUHU2/u
 github.com/modelcontextprotocol/go-sdk v1.6.1/go.mod h1:kzm3kzFL1/+AziGOE0nUs3gvPoNxMCvkxokMkuFapXQ=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
+github.com/onsi/gomega v1.37.0 h1:CdEG8g0S133B4OswTDC/5XPSzE1OeP29QOioj2PID2Y=
+github.com/onsi/gomega v1.37.0/go.mod h1:8D9+Txp43QWKhM24yyOBEdpkzN8FvJyAwecBgsU4KU0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
@@ -85,6 +83,10 @@ github.com/prometheus/otlptranslator v1.0.0 h1:s0LJW/iN9dkIH+EnhiD3BlkkP5QVIUVEo
 github.com/prometheus/otlptranslator v1.0.0/go.mod h1:vRYWnXvI6aWGpsdY/mOT/cbeVRBlPWtBNDb7kGR3uKM=
 github.com/prometheus/procfs v0.21.1 h1:GljZCt+zSTS+NZq88cyQ1LjZ+RCHp3uVuabBWA5+OJI=
 github.com/prometheus/procfs v0.21.1/go.mod h1:aB55Cww9pdSJVHk0hUf0inxWyyjPogFIjmHKYgMKmtY=
+github.com/redpanda-data/common-go/api v0.0.0-20250801174835-9eea07f1ea06 h1:9Ecc+Cg1EyqSTIQ6wQKoKk8BqDlBQmR74bJui4qIqsM=
+github.com/redpanda-data/common-go/api v0.0.0-20250801174835-9eea07f1ea06/go.mod h1:klAmWfc8Q3hEZk8geFTMu6f2sk3VUKRS7cv/LvB05ig=
+github.com/redpanda-data/protoc-gen-go-mcp v0.0.0-20260709214304-372b2d56e470 h1:gBvQBXc+MtBa8aGjXTOFLPu+1a+7I0UMu6Np9ofY1Ow=
+github.com/redpanda-data/protoc-gen-go-mcp v0.0.0-20260709214304-372b2d56e470/go.mod h1:1Ulz0OS7NpChjyMu6NWZucui6SEbIsOzAshGfpqWCV8=
 github.com/rodaine/protogofakeit v0.1.1 h1:ZKouljuRM3A+TArppfBqnH8tGZHOwM/pjvtXe9DaXH8=
 github.com/rodaine/protogofakeit v0.1.1/go.mod h1:pXn/AstBYMaSfc1/RqH3N82pBuxtWgejz1AlYpY1mI0=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
@@ -157,8 +159,6 @@ golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
 golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
 golang.org/x/oauth2 v0.36.0 h1:peZ/1z27fi9hUOFCAZaHyrpWG5lwe0RJEEEeH0ThlIs=
 golang.org/x/oauth2 v0.36.0/go.mod h1:YDBUJMTkDnJS+A4BP4eZBjCqtokkg1hODuPjwiGPO7Q=
-golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
-golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
 golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=
@@ -15,16 +15,16 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.1.5
+version: 0.2.10

 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "v0.2.0"
+appVersion: "v0.3.0"

 dependencies:
  - name: hull
    repository: https://vidispine.github.io/hull
-    version: 1.32.2
+    version: 1.36.0

@@ -0,0 +1,20 @@
+{{- $gd := .Values.hull.config.settings.grafanaDashboard | default dict }}
+{{- if $gd.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ .Release.Name }}-grafana-dashboard
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ .Chart.Name }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    {{- /* Label the Grafana sidecar watches for to auto-import dashboards */}}
+    {{ $gd.label | default "grafana_dashboard" }}: {{ $gd.labelValue | default "1" | quote }}
+  {{- with $gd.folder }}
+  annotations:
+    grafana_folder: {{ . | quote }}
+  {{- end }}
+data:
+  econet-exporter.json: |-
+{{ .Files.Get "dashboards/econet-exporter.json" | indent 4 }}
+{{- end }}
@@ -7,7 +7,7 @@ hull:
      # NOTE: Prefer supplying econetPassword via the ECONET_PASSWORD env var
      econetEmail: ""
      costPerKWH: 0.19
-      usageInterval: 5m
+      pollInterval: 1m
      # go-app config
      name: econet-exporter
      logging:
@@ -58,6 +58,18 @@ hull:
      otelResourceAttributes: app=econet-exporter
      otlpEndpoint: http://otel.otel.svc.cluster.local:4317 # Replace me

+      # Ship a ready-made Grafana dashboard as a ConfigMap for the Grafana
+      # sidecar to auto-import (kiwigrid/k8s-sidecar). Flip enabled to true;
+      # the dashboard uses the default Prometheus datasource and filters by
+      # device name. No datasource UID hard-coding required.
+      grafanaDashboard:
+        enabled: false
+        # Label/value the Grafana sidecar is configured to watch for.
+        label: grafana_dashboard
+        labelValue: "1"
+        # Optional Grafana folder to file the dashboard under (blank = General).
+        folder: ""
+
      serviceType: ClusterIP
      serviceLbIP: "" # Used if serviceTyps=LoadBalancer

@@ -12,9 +12,9 @@ import (
 	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/config"
 )

-// DefaultUsageInterval is used when UsageInterval is unset. Rheem's
-// energy/water history only updates hourly, so polling faster is wasteful.
-const DefaultUsageInterval = 5 * time.Minute
+// DefaultPollInterval is used when PollInterval is unset. Each tick re-fetches
+// device state and daily energy/water usage over REST.
+const DefaultPollInterval = 1 * time.Minute

 type ServiceConfig struct {
 	// Rheem EcoNet cloud credentials. Prefer supplying the password via
@@ -30,8 +30,9 @@ type ServiceConfig struct {
 	// metric from kWh energy usage.
 	CostPerKWH float64 `yaml:"costPerKWH" json:"costPerKWH,omitempty" env:"ECONET_COST_PER_KWH" default:"0.19"`

-	// UsageInterval controls how often energy/water usage history is polled.
-	UsageInterval time.Duration `yaml:"usageInterval" json:"usageInterval,omitempty" env:"ECONET_USAGE_INTERVAL"`
+	// PollInterval controls how often device state and daily energy/water
+	// usage are re-fetched over REST.
+	PollInterval time.Duration `yaml:"pollInterval" json:"pollInterval,omitempty" env:"ECONET_POLL_INTERVAL"`

 	// Embeds go-app config, used by go-app to
 	// merge custom config into go-app config, and to produce
@@ -50,10 +51,10 @@ func (c *ServiceConfig) LoadEnv() error {
 	return env.Parse(c)
 }

-// GetUsageInterval returns the configured usage poll interval or the default.
-func (c *ServiceConfig) GetUsageInterval() time.Duration {
-	if c.UsageInterval <= 0 {
-		return DefaultUsageInterval
+// GetPollInterval returns the configured poll interval or the default.
+func (c *ServiceConfig) GetPollInterval() time.Duration {
+	if c.PollInterval <= 0 {
+		return DefaultPollInterval
 	}
-	return c.UsageInterval
+	return c.PollInterval
 }
@@ -5,19 +5,22 @@ package econet

 import (
 	"context"
-	"crypto/tls"
 	"fmt"
-	"log/slog"
-	"net/http"
+	"time"

-	rheemcloud "github.com/kevinburke/rheemcloud-go"
+	"github.com/rs/zerolog"

 	optsgrpc "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/grpc/opts"
 	optshttp "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http/opts"

 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetgrpc"
-	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetmcp"
+	// MCP server. Aliased so switching implementations is a one-line change.
+	// Generated (protoc-gen-go-mcp) tools:
+	econetmcp "gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetmcpgen"
+	// Hand-written tools (switch back by using this import instead):
+	// econetmcp "gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetmcp"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetmetrics"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/service"
 )
@@ -25,7 +28,8 @@ import (
 type EconetService struct {
 	ctx     context.Context
 	config  *config.ServiceConfig
-	client  *rheemcloud.Client
+	log     *zerolog.Logger
+	client  *econetclient.Client
 	grpc    *econetgrpc.EconetGRPCServer
 	mcp     *econetmcp.EconetMCPServer
 	metrics *econetmetrics.Collector
@@ -34,46 +38,58 @@ type EconetService struct {
 func (e *EconetService) Init(ctx context.Context, cfg *config.ServiceConfig) (service.ShutdownFunc, error) {
 	e.ctx = ctx
 	e.config = cfg
+	e.log = zerolog.Ctx(ctx)

-	client, err := connect(ctx, cfg)
-	if err != nil {
-		return nil, err
+	// Fail fast on missing credentials (cheap, no network).
+	if cfg.EconetEmail == "" || cfg.EconetPassword == "" {
+		return nil, fmt.Errorf("econet: email and password required (set ECONET_EMAIL / ECONET_PASSWORD)")
 	}
-	e.client = client

-	e.grpc = econetgrpc.NewEconetGRPCServer(ctx, cfg, client)
+	e.client = econetclient.New(cfg, e.log)
+	e.grpc = econetgrpc.NewEconetGRPCServer(ctx, cfg, e.client)
 	e.mcp = econetmcp.NewEconetMCPServer(ctx, cfg, e.grpc)
-	e.metrics = econetmetrics.NewCollector(ctx, cfg, client)
-	if err := e.metrics.Start(); err != nil {
+	e.metrics = econetmetrics.NewCollector(ctx, cfg, e.client)
+	if err := e.metrics.RegisterGauges(); err != nil {
 		return nil, err
 	}

+	// Poll the cloud in the background so a slow or unreachable Rheem cloud
+	// never blocks HTTP/gRPC server startup. Devices are empty until the first
+	// successful refresh; the gauges and gRPC handlers tolerate that.
+	go e.pollLoop(ctx)
+
 	return e.shutdown, nil
 }

-func connect(ctx context.Context, cfg *config.ServiceConfig) (*rheemcloud.Client, error) {
-	if cfg.EconetEmail == "" || cfg.EconetPassword == "" {
-		return nil, fmt.Errorf("econet: email and password required (set ECONET_EMAIL / ECONET_PASSWORD)")
+// pollLoop refreshes device state on a ticker for the life of the service.
+// A per-refresh timeout keeps a hung REST call from stalling the loop.
+func (e *EconetService) pollLoop(ctx context.Context) {
+	interval := e.config.GetPollInterval()
+	e.refresh(ctx)
+	t := time.NewTicker(interval)
+	defer t.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-t.C:
+			e.refresh(ctx)
 		}
-	client, err := rheemcloud.Connect(ctx, cfg.EconetEmail, cfg.EconetPassword, &rheemcloud.Config{
-		Logger: slog.Default(),
-		HTTPClient: &http.Client{
-			Transport: &http.Transport{
-				TLSClientConfig: &tls.Config{
-					InsecureSkipVerify: cfg.EconetTLSInsecure,
-				},
-			},
-		},
-	})
-	if err != nil {
-		return nil, fmt.Errorf("econet: connect failed: %w", err)
 	}
-	return client, nil
+}
+
+func (e *EconetService) refresh(ctx context.Context) {
+	rctx, cancel := context.WithTimeout(ctx, e.config.GetPollInterval())
+	defer cancel()
+	if err := e.client.Refresh(rctx); err != nil {
+		e.log.Error().Err(err).Msg("econet: refresh failed")
+		return
+	}
+	e.log.Debug().Int("devices", len(e.client.Devices())).Msg("econet: refreshed")
 }

 func (e *EconetService) shutdown(_ context.Context) (string, error) {
-	e.metrics.Stop()
-	return "EconetService", e.client.Close()
+	return "EconetService", nil
 }

 func (e *EconetService) GetGRPC() *optsgrpc.AppGRPC {
@@ -95,7 +111,7 @@ func (e *EconetService) healthChecks() []optshttp.HealthCheckFunc {
 	return []optshttp.HealthCheckFunc{
 		func(_ context.Context) error {
 			if len(e.client.Devices()) == 0 {
-				return fmt.Errorf("econet: no devices loaded")
+				return fmt.Errorf("econet: no devices loaded yet")
 			}
 			return nil
 		},
@@ -0,0 +1,382 @@
+// Package econetclient is a minimal REST client for the Rheem EcoNet cloud
+// (ClearBlade backend). It authenticates, lists devices, and reads daily
+// energy/water usage over plain HTTPS — no MQTT. Callers drive it by calling
+// Refresh on a ticker and reading the decoded Device snapshots.
+package econetclient
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/rs/zerolog"
+
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+)
+
+// Static credentials embedded in the Rheem EcoNet Android app; the ClearBlade
+// backend uses them to identify the calling app independent of the per-user
+// auth. Same values pyeconet and kevinburke/rheemcloud-go use.
+const (
+	clearBladeSystemKey    = "e2e699cb0bb0bbb88fc8858cb5a401"
+	clearBladeSystemSecret = "E2E699CB0BE6C6FADDB1B0BC9A20"
+	baseURL                = "https://rheem.clearblade.com/api/v/1"
+)
+
+// Client talks to the EcoNet REST API and caches the latest device snapshot.
+// It is safe for concurrent use: Refresh swaps the device map under a lock,
+// and readers take a read lock.
+type Client struct {
+	email      string
+	password   string
+	costPerKWH float64
+	http       *http.Client
+	log        *zerolog.Logger
+
+	mu        sync.RWMutex
+	token     string
+	accountID string
+	devices   map[string]*Device
+}
+
+// New builds a Client from config. It performs no network I/O; call Refresh
+// to authenticate and populate devices.
+func New(cfg *config.ServiceConfig, log *zerolog.Logger) *Client {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: cfg.EconetTLSInsecure} //nolint:gosec // opt-in via EconetTLSInsecure
+	return &Client{
+		email:      cfg.EconetEmail,
+		password:   cfg.EconetPassword,
+		costPerKWH: cfg.CostPerKWH,
+		http:       &http.Client{Transport: transport, Timeout: 15 * time.Second},
+		log:        log,
+		devices:    map[string]*Device{},
+	}
+}
+
+// CostPerKWH exposes the configured electricity price for the usage gauges.
+func (c *Client) CostPerKWH() float64 { return c.costPerKWH }
+
+// Devices returns a snapshot slice of the currently-known devices. Empty until
+// the first successful Refresh.
+func (c *Client) Devices() []*Device {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	out := make([]*Device, 0, len(c.devices))
+	for _, d := range c.devices {
+		out = append(out, d)
+	}
+	return out
+}
+
+// Device looks up a single device by serial number, or nil if unknown.
+func (c *Client) Device(serial string) *Device {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	return c.devices[serial]
+}
+
+// Refresh authenticates if needed, re-fetches the device list, reads each
+// unit's daily usage, and atomically replaces the cached snapshot. On an auth
+// failure it clears the token so the next call re-authenticates.
+func (c *Client) Refresh(ctx context.Context) error {
+	if err := c.ensureAuth(ctx); err != nil {
+		return err
+	}
+	equipment, err := c.fetchDevices(ctx)
+	if err != nil {
+		c.clearToken() // force re-auth next time in case the token expired
+		return err
+	}
+
+	now := time.Now()
+	devices := make(map[string]*Device, len(equipment))
+	for _, raw := range equipment {
+		d := newDevice(raw, now)
+		if d.SerialNumber == "" {
+			continue
+		}
+		c.fetchUsage(ctx, d)
+		devices[d.SerialNumber] = d
+	}
+
+	c.mu.Lock()
+	c.devices = devices
+	c.mu.Unlock()
+	return nil
+}
+
+// SetMode changes a device's operating mode. It resolves the normalized mode
+// slug to the device's @MODE enum index and publishes a desired-state message
+// to the EcoNet cloud over ClearBlade's REST publish endpoint (the HTTP
+// equivalent of the app's MQTT publish). The change is applied asynchronously;
+// the new mode is only reflected after a subsequent Refresh.
+func (c *Client) SetMode(ctx context.Context, serial, mode string) error {
+	c.mu.RLock()
+	d, account := c.devices[serial], c.accountID
+	c.mu.RUnlock()
+	if d == nil {
+		return fmt.Errorf("econet: unknown device %q", serial)
+	}
+	idx, ok := d.modeIndex(mode)
+	if !ok {
+		return fmt.Errorf("econet: device %q does not support mode %q (supported: %s)",
+			serial, mode, strings.Join(d.SupportedModes(), ", "))
+	}
+
+	if err := c.ensureAuth(ctx); err != nil {
+		return err
+	}
+
+	desired, err := json.Marshal(map[string]any{
+		"transactionId": transactionID(),
+		"device_name":   d.DeviceID,
+		"serial_number": d.SerialNumber,
+		"@MODE":         idx,
+	})
+	if err != nil {
+		return err
+	}
+	publish := map[string]any{
+		"topic": "user/" + account + "/device/desired",
+		"body":  string(desired),
+		"qos":   1,
+	}
+
+	path := "/message/" + clearBladeSystemKey + "/publish"
+	if err := c.do(ctx, path, c.userToken(), publish, nil); err != nil {
+		c.clearToken() // token may have expired; re-auth next call
+		return fmt.Errorf("econet: set mode: %w", err)
+	}
+	c.log.Info().Str("serial", serial).Str("mode", mode).Int("modeIndex", idx).
+		Msg("econet: published mode change")
+	return nil
+}
+
+func (c *Client) clearToken() {
+	c.mu.Lock()
+	c.token = ""
+	c.mu.Unlock()
+}
+
+func (c *Client) ensureAuth(ctx context.Context) error {
+	c.mu.RLock()
+	have := c.token != ""
+	c.mu.RUnlock()
+	if have {
+		return nil
+	}
+	return c.authenticate(ctx)
+}
+
+// --- REST calls ----------------------------------------------------------
+
+func (c *Client) authenticate(ctx context.Context) error {
+	body := map[string]string{"email": c.email, "password": c.password}
+	var ar struct {
+		UserToken string `json:"user_token"`
+		Options   struct {
+			Success   bool   `json:"success"`
+			AccountID string `json:"account_id"`
+			Message   string `json:"message"`
+		} `json:"options"`
+	}
+	if err := c.do(ctx, "/user/auth", "", body, &ar); err != nil {
+		return fmt.Errorf("econet: auth: %w", err)
+	}
+	if !ar.Options.Success || ar.UserToken == "" || ar.Options.AccountID == "" {
+		if ar.Options.Message != "" {
+			return fmt.Errorf("econet: auth rejected: %s", ar.Options.Message)
+		}
+		return fmt.Errorf("econet: auth rejected (empty token/account)")
+	}
+	c.mu.Lock()
+	c.token = ar.UserToken
+	c.accountID = ar.Options.AccountID
+	c.mu.Unlock()
+	return nil
+}
+
+// fetchDevices returns the raw equipment blocks from getUserDataForApp.
+func (c *Client) fetchDevices(ctx context.Context) ([]map[string]json.RawMessage, error) {
+	var resp struct {
+		Results struct {
+			Locations []struct {
+				// "equiptments" is misspelled upstream; match it exactly.
+				Equipments []map[string]json.RawMessage `json:"equiptments"`
+			} `json:"locations"`
+		} `json:"results"`
+	}
+	path := "/code/" + clearBladeSystemKey + "/getUserDataForApp"
+	if err := c.do(ctx, path, c.userToken(), map[string]string{"resource": "friedrich"}, &resp); err != nil {
+		return nil, fmt.Errorf("econet: device list: %w", err)
+	}
+	var out []map[string]json.RawMessage
+	for _, loc := range resp.Results.Locations {
+		out = append(out, loc.Equipments...)
+	}
+	return out, nil
+}
+
+// fetchUsage reads the device's daily energy and water totals, filling the
+// usage fields. Failures are logged at debug and leave the fields at zero
+// (e.g. units that don't track water return an error).
+func (c *Client) fetchUsage(ctx context.Context, d *Device) {
+	if e, typ, err := c.usage(ctx, d, "energyUsage"); err == nil {
+		d.EnergyKWH, d.EnergyType = e, typ
+	} else {
+		c.log.Debug().Err(err).Str("serial", d.SerialNumber).Msg("energy usage poll failed")
+	}
+	if w, _, err := c.usage(ctx, d, "waterUsage"); err == nil {
+		d.WaterGallons = w
+	} else {
+		c.log.Debug().Err(err).Str("serial", d.SerialNumber).Msg("water usage poll failed")
+	}
+}
+
+// usage POSTs a dynamicAction usage report and sums today's buckets. The
+// energy unit ("KWH"/"KBTU") is inferred from the summary message.
+func (c *Client) usage(ctx context.Context, d *Device, usageType string) (total float64, energyType string, err error) {
+	start, end := dayWindow(usageType == "energyUsage")
+	payload := map[string]string{
+		"ACTION":        "waterheaterUsageReportView",
+		"device_name":   d.DeviceID,
+		"serial_number": d.SerialNumber,
+		"start_date":    start,
+		"end_date":      end,
+		"usage_type":    usageType,
+	}
+	var raw json.RawMessage
+	path := "/code/" + clearBladeSystemKey + "/dynamicAction"
+	if err := c.do(ctx, path, c.userToken(), payload, &raw); err != nil {
+		return 0, "", err
+	}
+	var env struct {
+		Success bool   `json:"success"`
+		Error   string `json:"error"`
+		Results struct {
+			Energy usageBlock `json:"energy_usage"`
+			Water  usageBlock `json:"water_usage"`
+		} `json:"results"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return 0, "", fmt.Errorf("parse usage: %w", err)
+	}
+	if !env.Success {
+		if env.Error != "" {
+			return 0, "", fmt.Errorf("usage rejected: %s", env.Error)
+		}
+		return 0, "", fmt.Errorf("usage rejected")
+	}
+	block := env.Results.Water
+	if usageType == "energyUsage" {
+		block = env.Results.Energy
+	}
+	for _, p := range block.Data {
+		total += p.Value
+	}
+	return total, energyTypeFromMessage(block.Message, d.GenericType), nil
+}
+
+type usageBlock struct {
+	Data []struct {
+		Value float64 `json:"value"`
+	} `json:"data"`
+	Message string `json:"message"`
+}
+
+// do POSTs a JSON body to path and decodes the JSON response into out. When
+// token is non-empty it is sent as the ClearBlade-UserToken header.
+func (c *Client) do(ctx context.Context, path, token string, body, out any) error {
+	b, err := json.Marshal(body)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, baseURL+path, bytes.NewReader(b))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("ClearBlade-SystemKey", clearBladeSystemKey)
+	req.Header.Set("ClearBlade-SystemSecret", clearBladeSystemSecret)
+	if token != "" {
+		req.Header.Set("ClearBlade-UserToken", token)
+	}
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("HTTP %d: %s", resp.StatusCode, bytes.TrimSpace(raw))
+	}
+	// The publish endpoint replies 200 with an empty (or non-JSON) body; callers
+	// that don't need the response pass out == nil.
+	if out == nil || len(bytes.TrimSpace(raw)) == 0 {
+		return nil
+	}
+	return json.Unmarshal(raw, out)
+}
+
+func (c *Client) userToken() string {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	return c.token
+}
+
+// --- usage helpers -------------------------------------------------------
+
+// transactionID mirrors the identifier the Rheem Android app stamps on each
+// desired-state publish: "ANDROID_" + a local second-resolution timestamp.
+func transactionID() string {
+	return "ANDROID_" + time.Now().Format("2006-01-02T15:04:05")
+}
+
+// dayWindow returns ISO-8601 start/end strings covering the current local day,
+// matching pyeconet's formats: energy includes the timezone offset, water does
+// not (the upstream parser is picky).
+func dayWindow(energy bool) (start, end string) {
+	now := time.Now()
+	s := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 999_000_000, now.Location())
+	e := time.Date(now.Year(), now.Month(), now.Day(), 23, 59, 59, 999_000_000, now.Location())
+	if energy {
+		return pyISOMillis(s), pyISOMillis(e)
+	}
+	const f = "2006-01-02T15:04:05.999"
+	return s.Format(f), e.Format(f)
+}
+
+// pyISOMillis emulates Python's datetime.isoformat(timespec='milliseconds')
+// for a tz-aware datetime: YYYY-MM-DDTHH:MM:SS.mmm±HH:MM.
+func pyISOMillis(t time.Time) string {
+	s := t.Format("2006-01-02T15:04:05.000-0700")
+	if len(s) >= 5 { // "-0700" -> "-07:00"
+		s = s[:len(s)-2] + ":" + s[len(s)-2:]
+	}
+	return s
+}
+
+// energyTypeFromMessage extracts the unit label ("KWH"/"KBTU") from Rheem's
+// human summary ("You used X.Y kWh of energy today."), the 4th word per
+// pyeconet's heuristic, falling back to the device's generic type.
+func energyTypeFromMessage(msg, genericType string) string {
+	fields := strings.Fields(msg)
+	if len(fields) >= 4 {
+		return strings.ToUpper(fields[3])
+	}
+	if genericType == "gasWaterHeater" {
+		return "KBTU"
+	}
+	return "KWH"
+}
@@ -0,0 +1,349 @@
+package econetclient
+
+import (
+	"encoding/json"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Device is a flat snapshot of one piece of Rheem equipment, decoded from
+// the getUserDataForApp REST response. Fields are computed once per refresh;
+// consumers read them directly. WiFiSignal only arrives over MQTT (which this
+// client does not use), so it stays at its zero value.
+type Device struct {
+	SerialNumber string
+	DeviceID     string
+	FriendlyName string
+	Type         string // water_heater | thermostat | unknown
+	GenericType  string // e.g. heatpumpWaterHeater, gasWaterHeater
+
+	Connected  bool
+	WiFiSignal int // MQTT-only; always 0 here
+	Mode       string
+	Enabled    bool
+
+	Running      bool   // true when actively heating (decoded from @RUNNING over REST)
+	RunningState string // normalized @RUNNING label: "compressor-running" | "element-running" | "idle" | ...
+
+	// modeEnumText is the raw @MODE enum label list; the slice index is the
+	// integer value published to change the mode. Empty for units without a
+	// settable @MODE (mode changes are unsupported for those).
+	modeEnumText []string
+
+	Setpoint    int
+	SetpointMin int
+	SetpointMax int
+
+	HotWaterAvailability int // -1 if not reported, else 0/33/66/100
+	AlertCount           int
+	Away                 bool
+
+	LastUpdated time.Time
+
+	// Usage totals for the current day, populated by Client.Refresh.
+	EnergyKWH    float64
+	EnergyType   string // "KWH" or "KBTU"
+	WaterGallons float64
+}
+
+// newDevice decodes an equipment block (the raw JSON map for one unit) into
+// a flat Device. It ports the accessor logic from kevinburke/rheemcloud-go
+// so behaviour matches, minus the MQTT-only fields.
+func newDevice(info map[string]json.RawMessage, now time.Time) *Device {
+	d := &Device{
+		DeviceID:             jsonStr(info["device_name"]),
+		SerialNumber:         jsonStr(info["serial_number"]),
+		Type:                 deviceTypeString(jsonStr(info["device_type"])),
+		GenericType:          jsonStr(info["@TYPE"]),
+		Connected:            connected(info),
+		Away:                 jsonBool(info["@AWAY"]),
+		AlertCount:           alertCount(info["@ALERTCOUNT"]),
+		HotWaterAvailability: hotWater(info["@HOTWATER"]),
+		Enabled:              enabled(info),
+		Mode:                 mode(info),
+		LastUpdated:          now,
+	}
+	d.FriendlyName = friendlyName(info, d.DeviceID)
+	d.Setpoint, d.SetpointMin, d.SetpointMax = setpoint(info["@SETPOINT"])
+	d.Running, d.RunningState = running(info)
+	d.modeEnumText = modeLabels(info)
+	return d
+}
+
+// SupportedModes returns the normalized mode slugs this device can be set to,
+// in publish-index order. Empty for units without a settable @MODE.
+func (d *Device) SupportedModes() []string {
+	out := make([]string, 0, len(d.modeEnumText))
+	for _, label := range d.modeEnumText {
+		out = append(out, modeFromEnumText(label))
+	}
+	return out
+}
+
+// modeIndex maps a normalized mode slug to the integer value the EcoNet cloud
+// expects in a @MODE publish, matching pyeconet's enumText-position lookup.
+func (d *Device) modeIndex(slug string) (int, bool) {
+	for i, label := range d.modeEnumText {
+		if modeFromEnumText(label) == slug {
+			return i, true
+		}
+	}
+	return 0, false
+}
+
+// --- field decoders ------------------------------------------------------
+
+func connected(info map[string]json.RawMessage) bool {
+	v, ok := info["@CONNECTED"]
+	if !ok {
+		return true // older units omit it and are assumed connected
+	}
+	return jsonBool(v)
+}
+
+func friendlyName(info map[string]json.RawMessage, deviceID string) string {
+	if obj := decodeDatapoint(info["@NAME"]); obj != nil {
+		if s := jsonStr(obj.Value); s != "" {
+			return s
+		}
+	}
+	return deviceID
+}
+
+func alertCount(v json.RawMessage) int {
+	if len(v) == 0 {
+		return 0
+	}
+	var n float64
+	if json.Unmarshal(v, &n) == nil {
+		return int(n)
+	}
+	var s string
+	if json.Unmarshal(v, &s) == nil {
+		if i, err := strconv.Atoi(s); err == nil {
+			return i
+		}
+	}
+	return 0
+}
+
+func hotWater(v json.RawMessage) int {
+	var icon string
+	if len(v) == 0 || json.Unmarshal(v, &icon) != nil {
+		return -1
+	}
+	switch {
+	case strings.Contains(icon, "ic_tank_hundread_percent"):
+		return 100
+	case strings.Contains(icon, "ic_tank_fourty_percent"):
+		return 66
+	case strings.Contains(icon, "ic_tank_ten_percent"):
+		return 33
+	case strings.Contains(icon, "ic_tank_empty"), strings.Contains(icon, "ic_tank_zero_percent"):
+		return 0
+	default:
+		return -1
+	}
+}
+
+func setpoint(v json.RawMessage) (val, min, max int) {
+	obj := decodeDatapoint(v)
+	if obj == nil {
+		return 0, 0, 0
+	}
+	var n float64
+	_ = json.Unmarshal(obj.Value, &n)
+	return int(n), int(obj.Constraints.LowerLimit), int(obj.Constraints.UpperLimit)
+}
+
+// enabled reports the master on/off state, porting rheemcloud's Device.Enabled.
+func enabled(info map[string]json.RawMessage) bool {
+	if _, ok := info["@MODE"]; ok {
+		labels := modeLabels(info)
+		if obj := decodeDatapoint(info["@MODE"]); obj != nil {
+			if idx, ok := datapointIndex(obj); ok && idx >= 0 && idx < len(labels) {
+				return !strings.EqualFold(labels[idx], "OFF")
+			}
+		}
+	}
+	if _, ok := info["@ENABLED"]; ok {
+		obj := decodeDatapoint(info["@ENABLED"])
+		if obj == nil {
+			return false
+		}
+		idx, _ := datapointIndex(obj)
+		return idx == 1
+	}
+	return false
+}
+
+// mode returns the current operating-mode label, porting rheemcloud's Device.Mode.
+func mode(info map[string]json.RawMessage) string {
+	_, supportsModes := info["@MODE"]
+	_, supportsOnOff := info["@ENABLED"]
+	if supportsOnOff && !enabled(info) {
+		return "off"
+	}
+	if !supportsModes {
+		switch jsonStr(info["@TYPE"]) {
+		case "gasWaterHeater", "tanklessWaterHeater":
+			return "gas"
+		default:
+			return "electric"
+		}
+	}
+	labels := modeLabels(info)
+	obj := decodeDatapoint(info["@MODE"])
+	if obj == nil {
+		return "unknown"
+	}
+	idx, _ := datapointIndex(obj)
+	if idx < 0 || idx >= len(labels) {
+		return "unknown"
+	}
+	return modeFromEnumText(labels[idx])
+}
+
+func modeLabels(info map[string]json.RawMessage) []string {
+	obj := decodeDatapoint(info["@MODE"])
+	if obj == nil {
+		return nil
+	}
+	return obj.Constraints.EnumText
+}
+
+// modeFromEnumText normalizes a Rheem mode label into a stable slug,
+// matching pyeconet's WaterHeaterOperationMode labels.
+func modeFromEnumText(s string) string {
+	cleaned := strings.ToUpper(strings.ReplaceAll(strings.ReplaceAll(strings.TrimRight(s, " "), " ", "_"), "/", "_"))
+	switch cleaned {
+	case "OFF":
+		return "off"
+	case "ELECTRIC", "ELECTRIC_MODE":
+		return "electric"
+	case "ENERGY_SAVING", "ENERGY_SAVER":
+		return "energy-saving"
+	case "HEAT_PUMP", "HEAT_PUMP_ONLY":
+		return "heat-pump"
+	case "HIGH_DEMAND":
+		return "high-demand"
+	case "GAS":
+		return "gas"
+	case "PERFORMANCE":
+		return "performance"
+	case "VACATION":
+		return "vacation"
+	default:
+		return "unknown"
+	}
+}
+
+// KnownModes are the normalized operating-mode slugs modeFromEnumText emits.
+// Consumers (e.g. the mode enum gauge) iterate these so every mode gets a
+// series regardless of which one is currently active.
+var KnownModes = []string{
+	"off", "electric", "energy-saving", "heat-pump",
+	"high-demand", "gas", "performance", "vacation", "unknown",
+}
+
+// running reports whether the unit is actively heating and a normalized label
+// for what is running. It reads the @RUNNING datapoint, a bare string the REST
+// getUserDataForApp payload populates (e.g. "Compressor Running" -> true,
+// "compressor-running"); empty means idle. This is served over plain REST
+// despite older code assuming it was MQTT-only.
+func running(info map[string]json.RawMessage) (active bool, state string) {
+	raw := strings.TrimSpace(jsonStr(info["@RUNNING"]))
+	if raw == "" {
+		return false, "idle"
+	}
+	state = slugify(raw)
+	if state == "off" || state == "idle" {
+		return false, state
+	}
+	return true, state
+}
+
+// slugify normalizes a Rheem label into a stable lowercase kebab-case slug,
+// e.g. "Compressor Running" -> "compressor-running".
+func slugify(s string) string {
+	s = strings.ToLower(strings.TrimSpace(s))
+	s = strings.ReplaceAll(s, "/", "-")
+	s = strings.Join(strings.Fields(s), "-")
+	return s
+}
+
+func deviceTypeString(s string) string {
+	switch s {
+	case "WH":
+		return "water_heater"
+	case "HVAC":
+		return "thermostat"
+	default:
+		return "unknown"
+	}
+}
+
+// --- datapoint plumbing --------------------------------------------------
+
+// datapointObject is the {value, status, title, constraints} shape many
+// "@..." fields use. Some fields are bare scalars instead; decodeDatapoint
+// returns nil for those and callers fall back to reading the raw value.
+type datapointObject struct {
+	Value       json.RawMessage      `json:"value"`
+	Status      string               `json:"status"`
+	Title       string               `json:"title"`
+	Constraints datapointConstraints `json:"constraints"`
+}
+
+type datapointConstraints struct {
+	LowerLimit float64  `json:"lowerLimit"`
+	UpperLimit float64  `json:"upperLimit"`
+	EnumText   []string `json:"enumText"`
+}
+
+func decodeDatapoint(b json.RawMessage) *datapointObject {
+	if len(b) == 0 || !isJSONObject(b) {
+		return nil
+	}
+	var obj datapointObject
+	if json.Unmarshal(b, &obj) != nil {
+		return nil
+	}
+	return &obj
+}
+
+// datapointIndex reads a datapoint's numeric value (mode index / enabled flag).
+func datapointIndex(obj *datapointObject) (int, bool) {
+	var n float64
+	if json.Unmarshal(obj.Value, &n) != nil {
+		return 0, false
+	}
+	return int(n), true
+}
+
+func isJSONObject(b json.RawMessage) bool {
+	for _, c := range b {
+		switch c {
+		case ' ', '\t', '\n', '\r':
+			continue
+		case '{':
+			return true
+		default:
+			return false
+		}
+	}
+	return false
+}
+
+func jsonStr(v json.RawMessage) string {
+	var s string
+	_ = json.Unmarshal(v, &s)
+	return s
+}
+
+func jsonBool(v json.RawMessage) bool {
+	var b bool
+	_ = json.Unmarshal(v, &b)
+	return b
+}
@@ -1,32 +1,31 @@
 package econetgrpc

 import (
-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"google.golang.org/protobuf/types/known/timestamppb"

 	pb "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )

-func deviceToProto(d *rheemcloud.Device) *pb.Device {
-	min, max := d.SetpointLimits()
+func deviceToProto(d *econetclient.Device) *pb.Device {
 	return &pb.Device{
-		SerialNumber:         d.SerialNumber(),
-		DeviceId:             d.DeviceID(),
-		FriendlyName:         d.FriendlyName(),
-		Type:                 d.Type().String(),
-		GenericType:          d.GenericType(),
-		Connected:            d.Connected(),
-		WifiSignal:           int32(d.WiFiSignal()),
-		Mode:                 d.Mode().String(),
-		Enabled:              d.Enabled(),
-		Running:              d.Running(),
-		RunningState:         d.RunningState(),
-		Setpoint:             int32(d.Setpoint()),
-		SetpointMin:          int32(min),
-		SetpointMax:          int32(max),
-		HotWaterAvailability: int32(d.HotWaterAvailability()),
-		AlertCount:           int32(d.AlertCount()),
-		Away:                 d.Away(),
+		SerialNumber:         d.SerialNumber,
+		DeviceId:             d.DeviceID,
+		FriendlyName:         d.FriendlyName,
+		Type:                 d.Type,
+		GenericType:          d.GenericType,
+		Connected:            d.Connected,
+		WifiSignal:           int32(d.WiFiSignal),
+		Mode:                 d.Mode,
+		Enabled:              d.Enabled,
+		Running:              d.Running,
+		RunningState:         d.RunningState,
+		Setpoint:             int32(d.Setpoint),
+		SetpointMin:          int32(d.SetpointMin),
+		SetpointMax:          int32(d.SetpointMax),
+		HotWaterAvailability: int32(d.HotWaterAvailability),
+		AlertCount:           int32(d.AlertCount),
+		Away:                 d.Away,
 		LastUpdated:          timestamppb.New(d.LastUpdated),
 	}
 }
@@ -1,11 +1,10 @@
 // Package econetgrpc implements the EconetService gRPC API over a shared
-// rheemcloud.Client, exposing read-only device state.
+// econetclient.Client, exposing read-only device state.
 package econetgrpc

 import (
 	"context"

-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/trace"
@@ -16,17 +15,18 @@ import (

 	pb "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )

 type EconetGRPCServer struct {
 	tracer trace.Tracer
 	ctx    context.Context
 	cfg    *config.ServiceConfig
-	client *rheemcloud.Client
+	client *econetclient.Client
 	pb.UnimplementedEconetServiceServer
 }

-func NewEconetGRPCServer(ctx context.Context, cfg *config.ServiceConfig, client *rheemcloud.Client) *EconetGRPCServer {
+func NewEconetGRPCServer(ctx context.Context, cfg *config.ServiceConfig, client *econetclient.Client) *EconetGRPCServer {
 	return &EconetGRPCServer{
 		ctx:    ctx,
 		cfg:    cfg,
@@ -70,3 +70,49 @@ func (s *EconetGRPCServer) GetDevice(ctx context.Context, req *pb.GetDeviceReque
 	span.SetStatus(codes.Ok, "")
 	return &pb.GetDeviceResponse{Device: deviceToProto(d)}, nil
 }
+
+// modeSlugs maps the settable proto Mode enum to the normalized slugs the
+// client (and Device.mode) use. MODE_UNSPECIFIED is intentionally absent;
+// protovalidate rejects it before we get here.
+var modeSlugs = map[pb.Mode]string{
+	pb.Mode_MODE_OFF:           "off",
+	pb.Mode_MODE_ELECTRIC:      "electric",
+	pb.Mode_MODE_ENERGY_SAVING: "energy-saving",
+	pb.Mode_MODE_HEAT_PUMP:     "heat-pump",
+	pb.Mode_MODE_HIGH_DEMAND:   "high-demand",
+	pb.Mode_MODE_GAS:           "gas",
+	pb.Mode_MODE_PERFORMANCE:   "performance",
+	pb.Mode_MODE_VACATION:      "vacation",
+}
+
+func (s *EconetGRPCServer) SetMode(ctx context.Context, req *pb.SetModeRequest) (
+	*pb.SetModeResponse, error,
+) {
+	ctx, span := s.tracer.Start(ctx, "setMode", trace.WithAttributes(
+		attribute.String("serialNumber", req.GetSerialNumber()),
+		attribute.String("mode", req.GetMode().String()),
+	))
+	defer span.End()
+
+	slug, ok := modeSlugs[req.GetMode()]
+	if !ok {
+		err := status.Errorf(grpccodes.InvalidArgument, "unsupported mode %q", req.GetMode())
+		span.SetStatus(codes.Error, err.Error())
+		return nil, err
+	}
+
+	if err := s.client.SetMode(ctx, req.GetSerialNumber(), slug); err != nil {
+		err := status.Error(grpccodes.FailedPrecondition, err.Error())
+		span.SetStatus(codes.Error, err.Error())
+		return nil, err
+	}
+
+	span.SetStatus(codes.Ok, "")
+	// State applies asynchronously; return the last-known snapshot. Guard against
+	// a concurrent refresh evicting the device between publish and lookup.
+	resp := &pb.SetModeResponse{}
+	if d := s.client.Device(req.GetSerialNumber()); d != nil {
+		resp.Device = deviceToProto(d)
+	}
+	return resp, nil
+}
@@ -1,76 +0,0 @@
-package econetmcp
-
-import (
-	"context"
-	"fmt"
-	"strings"
-
-	"github.com/modelcontextprotocol/go-sdk/mcp"
-	"k8s.io/utils/ptr"
-
-	pb "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1"
-)
-
-var ListDevicesTool = &mcp.Tool{
-	Name:        "list_water_heaters",
-	Title:       "List EcoNet Water Heaters",
-	Description: "Lists Rheem EcoNet devices and their current state (mode, setpoint, " +
-		"hot water availability, connectivity). Optionally filter to one serial number.",
-	Annotations: &mcp.ToolAnnotations{
-		ReadOnlyHint:  true,
-		OpenWorldHint: ptr.To(true),
-	},
-}
-
-type ListDevicesParams struct {
-	SerialNumber string `json:"serial_number,omitempty" jsonschema:"Optional device serial number to return a single device"`
-}
-
-func (m *EconetMCPServer) addListDevicesTool() {
-	mcp.AddTool(m.server, ListDevicesTool, m.listDevicesHandler)
-}
-
-func (m *EconetMCPServer) listDevicesHandler(ctx context.Context, _ *mcp.CallToolRequest, args *ListDevicesParams) (
-	*mcp.CallToolResult, any, error,
-) {
-	m.log.Debug().Str("serial", args.SerialNumber).Msg("list water heaters tool called")
-
-	devices, err := m.lookup(ctx, args.SerialNumber)
-	if err != nil {
-		return &mcp.CallToolResult{IsError: true, Meta: mcp.Meta{"error": err.Error()}}, nil, err
-	}
-
-	return &mcp.CallToolResult{
-		Content: []mcp.Content{&mcp.TextContent{Text: summarizeDevices(devices)}},
-	}, nil, nil
-}
-
-func (m *EconetMCPServer) lookup(ctx context.Context, serial string) ([]*pb.Device, error) {
-	if serial != "" {
-		resp, err := m.econetGRPC.GetDevice(ctx, &pb.GetDeviceRequest{SerialNumber: serial})
-		if err != nil {
-			return nil, err
-		}
-		return []*pb.Device{resp.GetDevice()}, nil
-	}
-
-	resp, err := m.econetGRPC.ListDevices(ctx, &pb.ListDevicesRequest{})
-	if err != nil {
-		return nil, err
-	}
-	return resp.GetDevices(), nil
-}
-
-func summarizeDevices(devices []*pb.Device) string {
-	if len(devices) == 0 {
-		return "No EcoNet devices found."
-	}
-	var b strings.Builder
-	for _, d := range devices {
-		fmt.Fprintf(&b, "%s (%s, serial %s): mode=%s setpoint=%d°F running=%t connected=%t hotWater=%d%% alerts=%d\n",
-			d.GetFriendlyName(), d.GetGenericType(), d.GetSerialNumber(),
-			d.GetMode(), d.GetSetpoint(), d.GetRunning(), d.GetConnected(),
-			d.GetHotWaterAvailability(), d.GetAlertCount())
-	}
-	return strings.TrimRight(b.String(), "\n")
-}
@@ -1,38 +0,0 @@
-package econetmcp
-
-import (
-	"strings"
-	"testing"
-
-	pb "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1"
-)
-
-func TestSummarizeDevices(t *testing.T) {
-	tests := []struct {
-		name    string
-		devices []*pb.Device
-		want    string // substring that must appear
-	}{
-		{"empty", nil, "No EcoNet devices found."},
-		{
-			name: "single",
-			devices: []*pb.Device{{
-				FriendlyName: "Garage",
-				GenericType:  "heatpumpWaterHeater",
-				SerialNumber: "ABC123",
-				Mode:         "heat-pump",
-				Setpoint:     125,
-			}},
-			want: "Garage (heatpumpWaterHeater, serial ABC123): mode=heat-pump setpoint=125",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got := summarizeDevices(tt.devices)
-			if !strings.Contains(got, tt.want) {
-				t.Errorf("summarizeDevices() = %q, want substring %q", got, tt.want)
-			}
-		})
-	}
-}
@@ -1,8 +1,13 @@
 /*
-Package econetmcp exposes an MCP server, mounted as an HTTP handler at
-/api/mcp, whose tools wrap the EconetService gRPC API.
+Package econetmcpgen exposes an MCP server, mounted as an HTTP handler at
+/api/mcp, whose tools are generated from the EconetService proto by
+protoc-gen-go-mcp and forwarded to the in-process gRPC server.
+
+It is the generated-code counterpart to econetmcp (which hand-writes a single
+list_water_heaters tool). Both expose an identical package API, so switching
+between them is a one-line import change in pkg/econet/econet.go.
 */
-package econetmcp
+package econetmcpgen

 import (
 	"context"
@@ -10,8 +15,10 @@ import (

 	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http/opts"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
+	"github.com/redpanda-data/protoc-gen-go-mcp/pkg/runtime/gosdk"
 	"github.com/rs/zerolog"

+	v1alpha1mcp "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1/v1alpha1mcp"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetgrpc"
 )
@@ -46,14 +53,15 @@ func NewEconetMCPServer(ctx context.Context, cfg *config.ServiceConfig,
 }

 func (m *EconetMCPServer) GetHandlers() []opts.HTTPHandler {
-	// NOTE: Add other tools here
-	m.addListDevicesTool()
+	// Register the generated tools against the in-process gRPC server via the
+	// go-sdk adapter, so the generated code shares our configured *mcp.Server.
+	v1alpha1mcp.RegisterEconetServiceHandler(gosdk.Wrap(m.server), m.econetGRPC)

 	handler := mcp.NewStreamableHTTPHandler(func(*http.Request) *mcp.Server {
 		return m.server
 	}, &mcp.StreamableHTTPOptions{})

-	m.log.Debug().Msg("Econet MCP tools ready")
+	m.log.Debug().Msg("Econet MCP tools ready (generated)")

 	return []opts.HTTPHandler{
 		{
@@ -3,9 +3,10 @@ package econetmetrics
 import (
 	"context"

-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/metric"
+
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )

 // registerLive wires the per-device live-state gauges to a single callback
@@ -17,13 +18,14 @@ func (c *Collector) registerLive() error {
 		setpointMin: b.i64("econet_setpoint_min_fahrenheit", "Minimum allowed setpoint (°F)"),
 		setpointMax: b.i64("econet_setpoint_max_fahrenheit", "Maximum allowed setpoint (°F)"),
 		connected:   b.i64("econet_connected", "1 if the device is connected"),
-		running:     b.i64("econet_running", "1 if the device is actively heating"),
+		running:     b.i64("econet_running", "1 if the device is actively heating (running_state label names the stage, e.g. compressor-running)"),
+		mode:        b.i64("econet_mode", "Operating mode enum: 1 for the current mode, 0 otherwise (see the mode label)"),
 		enabled:     b.i64("econet_enabled", "1 if the device is enabled"),
 		away:        b.i64("econet_away", "1 if away mode is on"),
 		hotWater:    b.i64("econet_hot_water_availability_percent", "Hot water availability (%)"),
 		alerts:      b.i64("econet_alert_count", "Number of active alerts"),
 		wifi:        b.i64("econet_wifi_signal_db", "WiFi signal strength (dB)"),
-		lastUpdated: b.i64("econet_last_updated_seconds", "Unix time of last MQTT state update"),
+		lastUpdated: b.i64("econet_last_updated_seconds", "Unix time of last state update"),
 		info:        b.i64("econet_device_info", "Device metadata (value is always 1)"),
 	}
 	if b.err != nil {
@@ -38,8 +40,8 @@ func (c *Collector) registerLive() error {
 	return err
 }

-// registerUsage wires the polled energy/water gauges, reading the cache the
-// poller refreshes (the underlying REST calls are too slow for a callback).
+// registerUsage wires the energy/water gauges, reading the usage totals the
+// poller folds into each device snapshot.
 func (c *Collector) registerUsage() error {
 	b := &gaugeBuilder{m: c.meter}
 	g := &usageGauges{
@@ -51,10 +53,8 @@ func (c *Collector) registerUsage() error {
 		return b.err
 	}
 	_, err := c.meter.RegisterCallback(func(_ context.Context, o metric.Observer) error {
-		c.mu.RLock()
-		defer c.mu.RUnlock()
-		for serial, u := range c.usage {
-			g.observe(o, serial, u, c.cfg.CostPerKWH)
+		for _, d := range c.client.Devices() {
+			g.observe(o, d, c.client.CostPerKWH())
 		}
 		return nil
 	}, b.obs...)
@@ -65,27 +65,30 @@ type liveGauges struct {
 	setpoint, setpointMin, setpointMax  metric.Int64ObservableGauge
 	connected, running, enabled, away   metric.Int64ObservableGauge
 	hotWater, alerts, wifi, lastUpdated metric.Int64ObservableGauge
+	mode                                metric.Int64ObservableGauge
 	info                                metric.Int64ObservableGauge
 }

-func (g *liveGauges) observe(o metric.Observer, d *rheemcloud.Device) {
+func (g *liveGauges) observe(o metric.Observer, d *econetclient.Device) {
 	set := metric.WithAttributes(deviceAttrs(d)...)
-	min, max := d.SetpointLimits()
-	o.ObserveInt64(g.setpoint, int64(d.Setpoint()), set)
-	o.ObserveInt64(g.setpointMin, int64(min), set)
-	o.ObserveInt64(g.setpointMax, int64(max), set)
-	o.ObserveInt64(g.connected, b2i(d.Connected()), set)
-	o.ObserveInt64(g.running, b2i(d.Running()), set)
-	o.ObserveInt64(g.enabled, b2i(d.Enabled()), set)
-	o.ObserveInt64(g.away, b2i(d.Away()), set)
-	o.ObserveInt64(g.hotWater, int64(d.HotWaterAvailability()), set)
-	o.ObserveInt64(g.alerts, int64(d.AlertCount()), set)
-	o.ObserveInt64(g.wifi, int64(d.WiFiSignal()), set)
-	// LastUpdated is zero until the first MQTT update lands; skip it then
-	// rather than emit a nonsensical negative epoch.
+	o.ObserveInt64(g.setpoint, int64(d.Setpoint), set)
+	o.ObserveInt64(g.setpointMin, int64(d.SetpointMin), set)
+	o.ObserveInt64(g.setpointMax, int64(d.SetpointMax), set)
+	o.ObserveInt64(g.connected, b2i(d.Connected), set)
+	runSet := metric.WithAttributes(append(deviceAttrs(d), attribute.String("econet.running_state", d.RunningState))...)
+	o.ObserveInt64(g.running, b2i(d.Running), runSet)
+	o.ObserveInt64(g.enabled, b2i(d.Enabled), set)
+	o.ObserveInt64(g.away, b2i(d.Away), set)
+	o.ObserveInt64(g.hotWater, int64(d.HotWaterAvailability), set)
+	o.ObserveInt64(g.alerts, int64(d.AlertCount), set)
+	o.ObserveInt64(g.wifi, int64(d.WiFiSignal), set)
 	if !d.LastUpdated.IsZero() {
 		o.ObserveInt64(g.lastUpdated, d.LastUpdated.Unix(), set)
 	}
+	for _, m := range econetclient.KnownModes {
+		modeSet := metric.WithAttributes(append(deviceAttrs(d), attribute.String("econet.mode", m))...)
+		o.ObserveInt64(g.mode, b2i(m == d.Mode), modeSet)
+	}
 	o.ObserveInt64(g.info, 1, metric.WithAttributes(infoAttrs(d)...))
 }

@@ -93,34 +96,34 @@ type usageGauges struct {
 	energy, cost, water metric.Float64ObservableGauge
 }

-func (g *usageGauges) observe(o metric.Observer, serial string, u usage, costPerKWH float64) {
-	set := metric.WithAttributes(attribute.String("econet.serial", serial))
-	o.ObserveFloat64(g.energy, u.energyKWH, metric.WithAttributes(
-		attribute.String("econet.serial", serial),
-		attribute.String("econet.energy_type", u.energyType),
+func (g *usageGauges) observe(o metric.Observer, d *econetclient.Device, costPerKWH float64) {
+	serial := attribute.String("econet.serial", d.SerialNumber)
+	o.ObserveFloat64(g.energy, d.EnergyKWH, metric.WithAttributes(
+		serial,
+		attribute.String("econet.energy_type", d.EnergyType),
 	))
-	o.ObserveFloat64(g.water, u.waterGallons, set)
-	if u.energyType == "KWH" {
-		o.ObserveFloat64(g.cost, u.energyKWH*costPerKWH, set)
+	o.ObserveFloat64(g.water, d.WaterGallons, metric.WithAttributes(serial))
+	if d.EnergyType == "KWH" {
+		o.ObserveFloat64(g.cost, d.EnergyKWH*costPerKWH, metric.WithAttributes(serial))
 	}
 }

 // deviceAttrs are low-cardinality identity attributes safe for every series.
 // They follow OTEL semantic-convention style (namespaced, dotted keys) and
 // deliberately exclude anything that changes over time (e.g. timestamps).
-func deviceAttrs(d *rheemcloud.Device) []attribute.KeyValue {
+func deviceAttrs(d *econetclient.Device) []attribute.KeyValue {
 	return []attribute.KeyValue{
-		attribute.String("econet.serial", d.SerialNumber()),
-		attribute.String("econet.device_id", d.DeviceID()),
-		attribute.String("econet.friendly_name", d.FriendlyName()),
+		attribute.String("econet.serial", d.SerialNumber),
+		attribute.String("econet.device_id", d.DeviceID),
+		attribute.String("econet.friendly_name", d.FriendlyName),
 	}
 }

-func infoAttrs(d *rheemcloud.Device) []attribute.KeyValue {
+func infoAttrs(d *econetclient.Device) []attribute.KeyValue {
 	return append(deviceAttrs(d),
-		attribute.String("econet.type", d.Type().String()),
-		attribute.String("econet.generic_type", d.GenericType()),
-		attribute.String("econet.mode", d.Mode().String()),
+		attribute.String("econet.type", d.Type),
+		attribute.String("econet.generic_type", d.GenericType),
+		attribute.String("econet.mode", d.Mode),
 	)
 }

@@ -1,123 +1,44 @@
 // Package econetmetrics registers OTEL observable gauges for Rheem EcoNet
-// device state and periodically polls energy/water usage history so the
-// values are available at Prometheus scrape time.
+// device state. Values are read at scrape time from the econetclient snapshot,
+// which a background poller keeps fresh over REST.
 package econetmetrics

 import (
 	"context"
-	"sync"
-	"time"

-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"github.com/rs/zerolog"
 	"go.opentelemetry.io/otel/metric"

 	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/otel"

 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )

-// usage holds the most recent polled energy/water totals for a device.
-type usage struct {
-	energyKWH    float64
-	energyType   string
-	waterGallons float64
-}
-
 type Collector struct {
 	ctx    context.Context
 	cfg    *config.ServiceConfig
 	log    *zerolog.Logger
-	client *rheemcloud.Client
+	client *econetclient.Client
 	meter  metric.Meter
-
-	mu    sync.RWMutex
-	usage map[string]usage // keyed by serial number
-
-	stop chan struct{}
 }

-func NewCollector(ctx context.Context, cfg *config.ServiceConfig, client *rheemcloud.Client) *Collector {
+func NewCollector(ctx context.Context, cfg *config.ServiceConfig, client *econetclient.Client) *Collector {
 	return &Collector{
 		ctx:    ctx,
 		cfg:    cfg,
 		log:    zerolog.Ctx(ctx),
 		client: client,
 		meter:  otel.GetMeter(ctx, "econet"),
-		usage:  make(map[string]usage),
-		stop:   make(chan struct{}),
 	}
 }

-// Start registers the gauge callbacks and launches the usage poller and
-// event drain goroutines. The rheemcloud client keeps live state fresh over
-// MQTT; draining its event channel keeps the cap-64 buffer from filling.
-func (c *Collector) Start() error {
+// RegisterGauges registers the observable gauge callbacks. It is safe to call
+// before the first refresh: the callbacks observe nothing while no devices are
+// loaded, so /metrics comes up immediately.
+func (c *Collector) RegisterGauges() error {
 	if err := c.registerLive(); err != nil {
 		return err
 	}
-	if err := c.registerUsage(); err != nil {
-		return err
-	}
-	go c.drainEvents()
-	go c.pollUsage()
-	return nil
-}
-
-func (c *Collector) Stop() { close(c.stop) }
-
-func (c *Collector) drainEvents() {
-	events := c.client.Subscribe()
-	for {
-		select {
-		case <-c.stop:
-			return
-		case <-c.ctx.Done():
-			return
-		case ev, ok := <-events:
-			if !ok {
-				return
-			}
-			c.log.Debug().Str("event", ev.Kind.String()).Msg("econet event")
-		}
-	}
-}
-
-func (c *Collector) pollUsage() {
-	c.refreshUsage()
-	t := time.NewTicker(c.cfg.GetUsageInterval())
-	defer t.Stop()
-	for {
-		select {
-		case <-c.stop:
-			return
-		case <-c.ctx.Done():
-			return
-		case <-t.C:
-			c.refreshUsage()
-		}
-	}
-}
-
-// refreshUsage polls each device's energy/water usage for the current day
-// and caches the totals for the usage gauge callback to read.
-func (c *Collector) refreshUsage() {
-	now := time.Now()
-	start := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
-	for serial, d := range c.client.Devices() {
-		u := usage{}
-		if e, err := c.client.EnergyUsage(c.ctx, d, start, now); err == nil {
-			u.energyKWH, u.energyType = e.Total, e.EnergyType
-		} else {
-			c.log.Debug().Err(err).Str("serial", serial).Msg("energy usage poll failed")
-		}
-		if w, err := c.client.WaterUsage(c.ctx, d, start, now); err == nil {
-			u.waterGallons = w.Total
-		} else {
-			c.log.Debug().Err(err).Str("serial", serial).Msg("water usage poll failed")
-		}
-		c.mu.Lock()
-		c.usage[serial] = u
-		c.mu.Unlock()
-	}
+	return c.registerUsage()
 }
@@ -30,6 +30,22 @@ message Device {
  google.protobuf.Timestamp last_updated = 18;
 }

+// Mode is a settable operating mode for a water heater. The values mirror the
+// kebab-case slugs reported in Device.mode. Not every device supports every
+// mode; the supported set is device-specific (derived from the unit's reported
+// mode list), so SetMode validates against the target device.
+enum Mode {
+  MODE_UNSPECIFIED = 0;
+  MODE_OFF = 1;
+  MODE_ELECTRIC = 2;
+  MODE_ENERGY_SAVING = 3;
+  MODE_HEAT_PUMP = 4;
+  MODE_HIGH_DEMAND = 5;
+  MODE_GAS = 6;
+  MODE_PERFORMANCE = 7;
+  MODE_VACATION = 8;
+}
+
 message ListDevicesRequest {}

 message ListDevicesResponse {
@@ -44,6 +60,20 @@ message GetDeviceResponse {
  Device device = 1;
 }

+message SetModeRequest {
+  string serial_number = 1 [(buf.validate.field).string.min_len = 1];
+  Mode mode = 2 [(buf.validate.field).enum = {
+    defined_only: true
+    not_in: [0]
+  }];
+}
+
+message SetModeResponse {
+  // Last-known device state. The mode change is applied asynchronously by the
+  // Rheem cloud, so this reflects the requested mode only after a later poll.
+  Device device = 1;
+}
+
 // EconetService exposes read-only access to Rheem EcoNet device state.
 service EconetService {
  rpc ListDevices(ListDevicesRequest) returns (ListDevicesResponse) {
@@ -52,4 +82,10 @@ service EconetService {
  rpc GetDevice(GetDeviceRequest) returns (GetDeviceResponse) {
    option (google.api.http) = {get: "/v1alpha1/devices/{serial_number}"};
  }
+  rpc SetMode(SetModeRequest) returns (SetModeResponse) {
+    option (google.api.http) = {
+      post: "/v1alpha1/devices/{serial_number}/mode"
+      body: "*"
+    };
+  }
 }
Author	SHA1	Message	Date
rmcguire	8effff311b	update CHANGELOG Build and Publish / check-chart (push) Successful in 15s Details Build and Publish / container-images (push) Successful in 3m1s Details Build and Publish / go-binaries (push) Successful in 3m59s Details Build and Publish / helm-release (push) Has been skipped Details	2026-07-16 15:39:06 -04:00
rmcguire	52ed5a7e3a	add set mode option Build and Publish / container-images (push) Has been skipped Details Build and Publish / check-chart (push) Successful in 15s Details Build and Publish / go-binaries (push) Has been skipped Details Build and Publish / helm-release (push) Has been skipped Details	2026-07-16 15:35:12 -04:00
rmcguire	8e0e59db16	remove manual econet mcp	2026-07-16 15:03:21 -04:00
rmcguire	22137e7ebe	move to generated mcp for econet	2026-07-16 15:02:17 -04:00
rmcguire	18e9cbecea	improve dashboard Build and Publish / go-binaries (push) Has been skipped Details Build and Publish / container-images (push) Has been skipped Details Build and Publish / check-chart (push) Successful in 10s Details Build and Publish / helm-release (push) Successful in 16s Details	2026-07-06 11:46:32 -04:00
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rmcguire	39424ce663	upgrade hull version to support helm4 Build and Publish / go-binaries (push) Has been skipped Details Build and Publish / container-images (push) Has been skipped Details Build and Publish / check-chart (push) Successful in 31s Details Build and Publish / helm-release (push) Successful in 17s Details	2026-07-05 20:33:42 -04:00
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rmcguire	a2faf4d412	update ci deps	2026-07-05 17:37:29 -04:00
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rmcguire	047f7c233d	remove rheemcloud pkg, implement against rest api only Build and Publish / helm-release (push) Has been skipped Details Build and Publish / go-binaries (push) Has been skipped Details Build and Publish / container-images (push) Has been skipped Details Build and Publish / check-chart (push) Successful in 12s Details	2026-07-05 16:59:53 -04:00