InfraNode: a keyless remote MCP server for German public-infrastructure open data (84+ cities)

[street1983nk]

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InfraNode is a free, keyless remote MCP server that unifies German public-infrastructure open data behind one interface: weather (DWD), air quality (Umweltbundesamt), public transit incl. realtime departures, traffic, parking, roadworks, electricity price (SMARD), land values and more, for 84+ German cities. Every source has its own format and several need portal registration; InfraNode normalizes them into one consistent JSON envelope with per-record source and license attribution.

• 45 read-only tools, all annotated readOnlyHint so clients can safely auto-allow them
• No API key, no account, no install: a remote Streamable HTTP endpoint
• Apache-2.0; the passed-through data keeps its upstream licenses (tracked separately)

Connect (Claude Code):
claude mcp add --transport http infranode https://mcp.infranode.dev/mcp

Example tool calls an agent can make:

• weather(slug="koeln") returns the current DWD observation
• transit_departures(slug="berlin") returns realtime departures with delay
• air_quality(slug="stuttgart") returns PM10/NO2 from the Umweltbundesamt network

I built this and would appreciate feedback from the community, especially on tool granularity (we collapsed ~60 REST endpoints into 45 tools) and on the graceful-degradation envelope: a dead upstream returns source_status instead of failing the whole call.

Relevant Links

• GitHub: https://github.com/street1983nk/infranode
• MCP endpoint: https://mcp.infranode.dev/mcp
• Docs: https://infranode.dev