# Airfield Directory

> Free, community-driven open database of general aviation (GA) airfield data: pilot reports (PIREPs), landing fees, and fuel prices. Read-only public access for humans and machine clients, no authentication required. Not an official source — not suitable for flight planning.

## API & agents

- [MCP server](https://airfield.directory/mcp): Read-only Model Context Protocol endpoint (HTTP POST, JSON-RPC, no auth).
- [MCP server card](https://airfield.directory/.well-known/mcp/server-card.json): Machine-readable MCP discovery document.
- [REST API (OpenAPI)](https://airfield.directory/api/gpt/v1/openapi.yaml): OpenAPI 3 description of the public REST / GPT Actions API.
- [API catalog](https://airfield.directory/.well-known/api-catalog): RFC 9727 catalog of available APIs.
- [AI catalog](https://airfield.directory/.well-known/ai-catalog.json): Agentic Resource Discovery (ARD) manifest of agentic resources.

## Markdown for agents

Append `.md` to a page URL (e.g. https://airfield.directory/airfield/EDAZ.md) or send `Accept: text/markdown` to get a Markdown representation. Available for airfield pages and Markdown-sourced docs such as the FAQ.

## Documentation

- [FAQ](https://airfield.directory/pages/faq): Connecting Claude, ChatGPT, Gemini and Codex; data licensing; reporting incorrect data.
- [About](https://airfield.directory/pages/about): What Airfield Directory offers.

## Data & feeds

- [Sitemap](https://airfield.directory/sitemap.xml): Public content index.
- [RSS feed](https://airfield.directory/rss): Latest PIREPs.

## Policy

- [Terms of Service](https://airfield.directory/pages/terms-of-service)
- [Privacy Policy](https://airfield.directory/pages/privacy-policy)