Home Assistant MCP Reporter
A minimal MCP server that exposes a single tool to forward JSON reports from Home Assistant to Power Automate webhooks. It enables automated workflow integration by securely transmitting data between Home Assistant and Microsoft Power Automate.
README
Home Assistant MCP Reporter
This repository contains a minimal Python MCP server packaged as a Home Assistant add-on.
What it does
The server exposes one MCP tool:
postReport
postReport accepts a JSON object and forwards it to the configured Power Automate webhook.
Authentication
The add-on requires an API key configured from the Home Assistant add-on config page.
Send the API key in either of these headers when calling the MCP endpoint:
X-API-Key: <your-key>Authorization: Bearer <your-key>
Local development
python -m venv .venv
.venv\Scripts\Activate.ps1
pip install -e .
python -m mcp_reporter_server
The server listens on 0.0.0.0:8099 using streamable HTTP transport.
Home Assistant installation
- Add this repository as an add-on repository in Home Assistant.
- Install the
MCP Reporteradd-on. - Start the add-on.
- Connect your MCP client to
http://homeassistant.local:8099/mcpor the add-on host/IP on port8099.
Notes
- The webhook URL is baked in by default to match the requested behavior.
- You can override it with the
POWER_AUTOMATE_WEBHOOK_URLenvironment variable if needed.
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