Gios Air

Local MCP server for the GIOŚ (Główny Inspektorat Ochrony Środowiska) air-quality public API — the official Polish state environmental monitoring feed for PM2.5, PM10, NO2, SO2, O3, CO, C6H6, and the composite air-quality index.

Part of the honest-mcp family of small, auditable, local-first MCP servers.

Why

If you live in a Polish city — especially over winter — the difference between "moderate" and "very poor" air-quality index matters (indoor training vs opening the window). GIOŚ has ~200 stations and a public API but only in Polish JSON-LD. This server translates it to English keys and hands it to your AI so you can ask "how's the air in Kraków this afternoon?"

Features

Four tools:

• list_stations — search the ~200-station network by city or voivodeship
• get_station_sensors — list the sensors installed at a station
• get_sensor_readings — recent measurements (~24h) from one sensor
• get_air_index — composite index for a station (very good / good / moderate / poor / very poor / hazardous) with the critical pollutant identified

Data source

• Endpoint: api.gios.gov.pl/pjp-api/v1 — GIOŚ public JSON-LD API
• No API key
• Refresh: hourly per sensor

Requirements

• Python 3.10+

Setup

git clone https://github.com/bartosz-kuc/gios-air-mcp.git
cd gios-air-mcp
python3 -m venv venv
./venv/bin/pip install -r requirements.txt

Register with Claude Code:

claude mcp add gios-air /absolute/path/to/venv/bin/python /absolute/path/to/server.py

Claude Desktop claude_desktop_config.json:

{
  "mcpServers": {
    "gios-air": {
      "command": "/absolute/path/to/venv/bin/python",
      "args": ["/absolute/path/to/server.py"]
    }
  }
}

Example usage

"How's the air in Kraków right now?"

Two-step: list_stations(city="Kraków", limit=5) → pick a station ID → get_air_index(station_id=...) → text category and the critical pollutant.

"PM2.5 readings for the last 24h from station 400."

get_station_sensors(station_id=400) → find the PM2.5 sensor ID → get_sensor_readings(sensor_id=...).

Data flow

Your AI client
     ↕  MCP stdio
This server (Python, on your machine)
     ↕  HTTPS
api.gios.gov.pl (GIOŚ)

No cloud middle. No telemetry.

Author

Bartosz Kuć — Warsaw-based developer, JDG owner running skanfirmy.pl.

• GitHub: https://github.com/bartosz-kuc

• Email: [email protected]

Consulting

Available for consulting on Polish tax and business integrations (KSeF, GUS/NFZ/GIOŚ APIs, mBank data), MCP server design, and AI-assisted tooling for JDGs and small teams. See skanfirmy.pl/uslugi for productized packages (audit 3k PLN, setup 8-15k PLN, retainer 2-4k PLN/mo), or reach out via email.

License

MIT — see LICENSE.

Related

• Part of the honest-mcp family — see the family index.