This release is a pre-release and may not be stable for production use.
Python Client for the OHF Matter Server
A PyPI package (matter-python-client) providing Python bindings for the OHF Matter Server. This is a drop-in replacement for the client portion of python-matter-server, with custom cluster definitions updated to match the Matter.js server.
Origin
The client and common modules were copied from python-matter-server v8.1.2 and modified:
- Source:
matter_server/client/andmatter_server/common/from python-matter-server - Modified:
matter_server/common/custom_clusters.py— updated to match the JS server's cluster definitions - Excluded:
matter_server/server/(the JS server replaces it),common/helpers/logger.py(depends oncoloredlogs, a server-only dependency)
Custom Cluster Changes
| Cluster | Change |
|---|---|
| EveCluster | +8 attributes (getConfig, setConfig, loggingMetadata, loggingData, lastEventTime, statusFault, childLock, rloc16), wattAccumulatedControlPoint type fixed |
| HeimanCluster | Attribute IDs shortened to match JS server |
| NeoCluster | Types changed from float32 to uint |
| Polling | Removed (JS server handles polling natively) |
Package
- PyPI name:
matter-python-client - Python module:
matter_server(same import path aspython-matter-server) - Python: >= 3.12
- Dependencies:
aiohttp,orjson,home-assistant-chip-clusters
npm Scripts (from monorepo root)
# First-time setup: create venv and install with test dependencies
npm run python:install
# Run unit + mock server tests (fast, ~1s)
npm run python:test
# Run full integration tests against real Matter.js server + test device (~40s)
npm run python:test-integration
# Run all Python tests
npm run python:test-all
# Build the PyPI package (.tar.gz + .whl)
npm run python:build
Usage
The package provides the same matter_server.client API as python-matter-server:
import aiohttp
from matter_server.client import MatterClient
async with aiohttp.ClientSession() as session:
client = MatterClient("ws://localhost:5580/ws", session)
await client.connect()
init_ready = asyncio.Event()
listen_task = asyncio.create_task(client.start_listening(init_ready))
await init_ready.wait()
nodes = client.get_nodes()
To use this package instead of python-matter-server in the Home Assistant Matter integration, change manifest.json:
- "requirements": ["python-matter-server==8.1.2"],
+ "requirements": ["matter-python-client==1.0.0"],
Testing
The test suite has three layers:
- Import smoke tests (8 tests) — verify all HA integration imports resolve
- Mock server tests (4 tests) — Python client against JS MockMatterServer subprocess
- Integration tests (63 tests) — Python client against real Matter.js server + test device, mirroring the JS
IntegrationTest.ts
1 maintainer
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