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AGENTS.md

Cursor Cloud specific instructions

Overview

Fli is a Python library providing programmatic access to Google Flights data via reverse-engineered API. It offers a CLI (fli), MCP server (fli-mcp / fli-mcp-http), and Python API. No external services (databases, caches, etc.) are required.

Development commands

All standard commands are in the Makefile and CLAUDE.md. Key ones:

  • Install deps: uv sync --all-extras
  • Lint: make lint (ruff)
  • Format: make format
  • Tests: make test (standard), make test-all (including fuzz)
  • CLI: uv run fli flights JFK LAX 2026-05-15
  • MCP HTTP server: uv run fli-mcp-http (serves at http://127.0.0.1:8000/mcp/)

Testing caveats

  • Tests under tests/search/ hit the live Google Flights API and are rate-limited (HTTP 429). These will frequently fail in cloud/CI environments. All other tests (CLI, core, models, MCP) are self-contained and pass reliably.
  • Run uv run pytest -vv --ignore=tests/search/ to skip flaky API-dependent tests.
  • One MCP test (test_search_dates_round_trip) also makes a live API call and may fail with empty results.

MCP server notes

  • The MCP HTTP endpoint requires Accept: application/json, text/event-stream header.
  • The fli/server/ module has been removed from the codebase.