Zurich Open Data MCP Server

Enables Claude, ChatGPT, and other MCP-compatible AI assistants to directly query 900+ datasets, geodata, parliamentary proceedings, tourism data, linked data, and real-time environmental and mobility information from the City of Zurich. 20 Tools, 6 Resources, 6 APIs.

🇨🇭Part of theSwiss Public Data MCP Portfolio

- Python 3.11+
- pip or uv
- mcp[cli]2.x — installed automatically; the server uses the 2.x API (mcp.server.mcpserver) and cannot run onmcp1.x

Use 0.6.0 or newer.Release0.5.1declaredmcp[cli]>=1.28.1with no upper bound. Oncemcp2.0.0 removedmcp.server.fastmcp, every fresh install of0.5.1resolved to 2.0.0 and failed at import withModuleNotFoundError.0.6.0runs on the 2.x API and pins>=2.0.0,<3. If you are pinned to0.5.1, upgrade — there is no working configuration of that release left.

# Clone git clone https://github.com/malkreide/zurich-opendata-mcp.git cd zurich-opendata-mcp # Install pip install -e . # Or with uv uv pip install -e .

Edit~/Library/Application Support/Claude/claude_desktop_config.json(macOS):

{ "mcpServers": { "zurich-opendata": { "command": "python", "args": ["-m", "zurich_opendata_mcp.server"], "env": {} } } }

Alternatively, using the installed command:

{ "mcpServers": { "zurich-opendata": { "command": "zurich-opendata-mcp" } } }

claude mcp add zurich-opendata -- python -m zurich_opendata_mcp.server

{ "mcpServers": { "zurich-opendata": { "command": "python", "args": ["-m", "zurich_opendata_mcp.server"] } } }

- "What datasets are available about schools in Zurich?"
- "Show me school holidays for public schools"
- "Analyze the available geodata"

- "What's the current temperature in Zurich?"→zurich_weather_live
- "How is the air quality today?"→zurich_air_quality
- "What's the water temperature in Lake Zurich?"→zurich_water_weather
- "How many parking spaces are free right now?"→zurich_parking_live
- "How many people are on Bahnhofstrasse right now?"→zurich_pedestrian_traffic

- "Show me all school facilities in Zurich as GeoJSON"→zurich_geo_features
- "What geodata layers are available?"→zurich_geo_layers
- "Where are the playgrounds in Zurich?"

- "What parliamentary motions about schools were filed?"→zurich_parliament_search
- "Which council members belong to the SP party?"→zurich_parliament_members

Council Resolutions (Stadtratsbeschlüsse)

- "Find council resolutions about Volksschule from 2025"→zurich_strb_search
- "List all SSD resolutions in 2025"→zurich_strb_by_department
- "Show council resolution 1203/2025"→zurich_strb_detail

- "What restaurants does Zurich Tourism recommend?"→zurich_tourism

Source of truth:GEOPORTAL_LAYERSinsrc/zurich_opendata_mcp/config.py.

zurich-opendata-mcp/ ├── src/zurich_opendata_mcp/ │ ├── __init__.py │ ├── app.py # Shared FastMCP instance │ ├── server.py # Console entry + back-compat re-exports │ ├── config.py # Endpoints, layer maps, resource IDs │ ├── http_client.py # Shared httpx client + CKAN wrapper │ ├── formatters.py # CKAN→model mapping + Markdown rendering │ ├── models.py # Pydantic structured-output models │ ├── clients/ # API clients: paris, sparql, tourism, wfs │ └── tools/ # @mcp.tool implementations: │ # catalog, datastore, geo, parliament, │ # realtime, sparql, strb, tourism, │ # resources (zurich:// URIs) ├── tests/ # respx round-trip, unit and live-marked tests ├── audits/ # Code-audit reports ├── .github/workflows/ # ci.yml + publish.yml (Trusted Publisher) ├── pyproject.toml ├── README.md / README.de.md ├── CONTRIBUTING.md / .de.md ├── SECURITY.md / .de.md ├── CHANGELOG.md ├── CLAUDE.md # Project conventions for Claude ├── LICENSE └── claude_desktop_config.json

# Install dev dependencies pip install -e ".[dev]" # Unit + validation tests (no network) pytest tests/ -m "not live" # Live integration tests (against live APIs — opt-in) pytest tests/ -m live # Linting ruff check src/ tests/

By default the server speaks MCP over stdio.--httpserves Streamable HTTP instead:

zurich-opendata-mcp --http --port 8000 # binds 127.0.0.1 (default) zurich-opendata-mcp --http --host 0.0.0.0 --port 8000

The loopback default is deliberate.Binding0.0.0.0exposes the server on every interface, to everyone who can reach the machine — there is no authentication in front of it.

SetMCP_ALLOWED_HOSTSwhenever you bind beyond loopback.It guards againstDNS rebinding: a page on your network resolves its own hostname to this server's address and then talks to it from the browser. From the browser's point of view that request is same-origin, so no origin rule stops it — only theHostcheck does.

Left unset on a non-loopback bind, the check staysoffand a warning is logged. That is the right default only when something in front of the server validatesHost. It is deliberately not guessed: on0.0.0.0the reachable name is unknowable inside the process, and a wrong guess would answer the very deployment it is meant to protect with 421 on every request.

- Read-only:All tools perform HTTP GET requests only — no data is written, modified, or deleted.
- No personal data:The APIs return open civic datasets (parking occupancy, weather readings, parliamentary proceedings). No personally identifiable information (PII) is processed or stored by this server.
- Rate limits:CKAN Solr search and ParkenDD are public APIs without documented rate limits; userowsandlimitparameters conservatively. The server enforces a 30s timeout per request; transient upstream errors (connect failures, HTTP 502/503/504) are retried once with a short backoff.
- Data freshness:Real-time tools (parking, weather, air quality) reflect the upstream source at query time. Measurement data is never cached; only the lookup of the current per-year UGZ resource ID (weather/air quality) is cached in-process for 24h.
- Terms of service:Data is subject to the ToS of each source —data.stadt-zuerich.ch,ParkenDD,gemeinderat-zuerich.ch. All City of Zurich data is published under CC0 (Open by Default since 2021).
- No guarantees:This server is a community project, not affiliated with the City of Zurich or any of the API providers. Availability depends on upstream APIs.

Contributions are welcome — seeCONTRIBUTING.md(Deutsch).

Read-only, no PII, no authentication, a fixed set of public-data endpoints. SeeSECURITY.md(Deutsch) for the full security posture and accepted-risk decisions.

MIT License — seeLICENSE. All data used is published under open licenses (CC0 / Open by Default since 2021).

Powered byModel Context Protocol• 6 APIs • 23 Tools • 5 Resources

Run viauv'suvx— no clone or manual install needed. Add to your MCP client config (mcpServersfor Claude Desktop, Cursor and Windsurf; use a top-levelserverskey for VS Code in.vscode/mcp.json):

{ "mcpServers": { "zurich-opendata-mcp": { "command": "uvx", "args": [ "zurich-opendata-mcp" ] } } }

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