# Python: BSBLan API Client

[![GitHub Release][releases-shield]][releases]
[![Python Versions][python-versions-shield]][pypi]
![Project Stage][project-stage-shield]
![Project Maintenance][maintenance-shield]
[![License][license-shield]](.github/LICENSE.md)

[![Build Status][build-shield]][build]
[![Code Coverage][codecov-shield]][codecov]
[![Quality Gate Status][sonarcloud-shield]][sonarcloud]
[![OpenSSF Scorecard][scorecard-shield]][scorecard]
[![OpenSSF Best Practices][bestpractices-shield]][bestpractices]
[![Documentation][docs-shield]][docs]

Asynchronous Python client for BSBLan.

## About

This package allows you to control and monitor a BSBLan device
programmatically. It is mainly created to allow third-party programs to automate
the behavior of [BSBLan][bsblanmodule].

**[Full documentation](https://liudger.github.io/python-bsblan)**

## Installation

```bash
pip install python-bsblan
```

## Quick start

```python
import asyncio
from bsblan import BSBLAN, BSBLANConfig

async def main() -> None:
    config = BSBLANConfig(host="192.168.1.100")
    async with BSBLAN(config) as client:
        # Read current state
        state = await client.state()
        print(f"Current temperature: {state.current_temperature.value}")

        # Set thermostat temperature
        await client.thermostat(target_temperature="21.5")

asyncio.run(main())
```

For more examples, including hot water control, multi-circuit support, and
authentication setup, see the [Getting Started][docs-getting-started] guide.

## Compatibility

The client automatically detects the device's capabilities during
`initialize()` and selects a matching configuration based on the BSB-LAN
JSON-API version reported by the `/JV` endpoint:

- **Full configuration** — JSON-API version 2.0 or newer. All features are
  available: multiple heating circuits, hot water control, schedules, sensors,
  and cooling setpoints and operating mode.
- **Basic configuration** — JSON-API version 1.x. A reduced, single-circuit
  configuration covering essential heating, hot water, and sensor parameters.

The JSON-API version is the documented, firmware-independent compatibility
signal. The adapter firmware version (from `/JI`) is still retrieved and
exposed via `device_info`, but it is not used to determine support. A device
that does not expose `/JV`, or reports a JSON-API version below 1.0, is not
supported and raises `BSBLANVersionError` during `initialize()`.

> Note: basic (JSON-API 1.x) support is best-effort and may not cover every
> parameter your heating system exposes.

## Changelog & Releases

This repository keeps a change log using [GitHub's releases][releases]
functionality. The format of the log is based on
[Keep a Changelog][keepchangelog].

Releases are based on [Semantic Versioning][semver], and use the format
of `MAJOR.MINOR.PATCH`. In a nutshell, the version will be incremented
based on the following:

- `MAJOR`: Incompatible or major changes.
- `MINOR`: Backwards-compatible new features and enhancements.
- `PATCH`: Backwards-compatible bugfixes and package updates.

## Contributing

This is an active open-source project. We are always open to people who want to
use the code or contribute to it.

We've set up a separate document for our
[contribution guidelines](CONTRIBUTING.md).

Thank you for being involved! :heart_eyes:

## Setting up development environment

This Python project is fully managed using the [uv][uv] dependency manager.
But also relies on the use of NodeJS for certain checks during development.

You need at least:

- Python 3.12+
- [uv][uv-install]
- NodeJS 22.14.0+ (including NPM)

To install all packages, including all development requirements:

```bash
npm install
make setup
```

### Makefile Targets

A `Makefile` is provided for common development tasks. Run `make help` to
see all available targets:

| Command            | Description                          |
|--------------------|--------------------------------------|
| `make setup`       | Install dev dependencies & git hooks |
| `make lint`        | Run all pre-commit hooks             |
| `make test`        | Run tests                            |
| `make coverage`    | Run tests with coverage report       |
| `make docs`        | Build documentation                  |
| `make docs-serve`  | Serve documentation locally          |

As this repository uses [prek][prek] (a faster, Rust-based drop-in replacement
for pre-commit), all changes are linted and tested with each commit. You can
run all checks and tests manually, using the following command:

```bash
uv run prek run --all-files
```

To run just the Python tests:

```bash
uv run pytest
```

## Authors & contributors

The template is from the repository 'elgato' by [Franck Nijhof][frenck].
The setup of this repository is by [Willem-Jan van Rootselaar][liudger].

For a full list of all authors and contributors,
check [the contributor's page][contributors].

## License

MIT License

Copyright (c) 2023-2026 WJ van Rootselaar

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

---

[![Buy me a coffee][buymeacoffee-shield]][buymeacoffee]

[bsblanmodule]: https://github.com/fredlcore/bsb_lan
[build-shield]: https://github.com/liudger/python-bsblan/actions/workflows/tests.yaml/badge.svg
[build]: https://github.com/liudger/python-bsblan/actions
[docs]: https://liudger.github.io/python-bsblan
[docs-getting-started]: https://liudger.github.io/python-bsblan/getting-started/
[docs-shield]: https://img.shields.io/badge/docs-GitHub%20Pages-blue
[buymeacoffee-shield]: https://www.buymeacoffee.com/assets/img/guidelines/download-assets-sm-2.svg
[buymeacoffee]: https://www.buymeacoffee.com/liudger
[codecov-shield]: https://codecov.io/gh/liudger/python-bsblan/branch/main/graph/badge.svg?token=ypos87GGxv
[codecov]: https://codecov.io/gh/liudger/python-bsblan
[contributors]: https://github.com/liudger/python-bsblan/graphs/contributors
[frenck]: https://github.com/frenck
[keepchangelog]: http://keepachangelog.com/en/1.0.0/
[license-shield]: https://img.shields.io/badge/license-MIT-blue.svg
[liudger]: https://github.com/liudger
[maintenance-shield]: https://img.shields.io/maintenance/yes/2026.svg
[uv]: https://docs.astral.sh/uv/
[uv-install]: https://docs.astral.sh/uv/getting-started/installation/
[prek]: https://github.com/j178/prek
[project-stage-shield]: https://img.shields.io/badge/project%20stage-stable-green.svg
[pypi]: https://pypi.org/project/python-bsblan/
[python-versions-shield]: https://img.shields.io/pypi/pyversions/python-bsblan
[releases-shield]: https://img.shields.io/github/v/release/liudger/python-bsblan.svg
[releases]: https://github.com/liudger/python-bsblan/releases
[semver]: http://semver.org/spec/v2.0.0.html
[scorecard-shield]: https://api.scorecard.dev/projects/github.com/liudger/python-bsblan/badge
[scorecard]: https://scorecard.dev/viewer/?uri=github.com/liudger/python-bsblan
[bestpractices-shield]: https://www.bestpractices.dev/projects/12561/badge
[bestpractices]: https://www.bestpractices.dev/projects/12561
[sonarcloud-shield]: https://sonarcloud.io/api/project_badges/measure?project=liudger_python-bsblan&metric=alert_status
[sonarcloud]: https://sonarcloud.io/summary/new_code?id=liudger_python-bsblan
