LabscoMCP early access ↗
finackMCP SERVER

Aviation Weather

METARs, TAFs, PIREPs and route weather from aviationweather.gov — a supplementary reference, explicitly not for flight planning.

by finack ↗Weather & Environmental ConditionsCommunity

LABSCO SUMMARY

The disclaimer is part of the product, not boilerplate.

The author's warning is unusually specific about the failure mode that matters here — not just that data can be stale, but that the model reading it can misstate a critical detail — and asks that this be used as a supplementary reference alongside an official briefing. Taken on those terms it is a clean, credential-free way to pull observations and forecasts into a conversation, with a client generated from the API's own definition rather than transcribed.

What it is

An MCP server over the Aviation Weather API, with a typed client generated from that API's own Swagger definition rather than hand-written — the generated code ships in the repository, and the build only compiles the TypeScript. It fetches observations, forecasts and pilot reports for airports and routes.

What you get

  • get-metar — current weather observations for an airport
  • get-taf — terminal aerodrome forecasts
  • get-pireps — pilot reports near an airport
  • get-route-weather — combined weather for a route between two airports
  • Request and response shapes typed from the official Swagger definition rather than written by hand

Requirements

No account and no key — aviationweather.gov is the data source. Node.js 18 or higher and npm. Clone, npm install, then npm run build, which compiles the TypeScript into dist/; npm start runs the server. Point your client at dist/index.js. Read the author's disclaimer before using it for anything: this is not FAA-approved, is not a replacement for certified weather services, and should never be the sole source for flight planning or in-flight decisions — weather data may be incomplete or delayed, and a model interpreting it may misrepresent something critical. Always obtain a proper briefing from an authorized provider. MIT licensed.

Setup effort

Build from source — git clone https://github.com/finack/aviation-mcp.git

See installation options