Streamable HTTP, JSON-RPC over POST, no key. To connect, add this URL as a custom connector / MCP server (ChatGPT: Settings > Apps & Connectors > Advanced > Developer mode; Claude: Settings > Connectors): https://app.carrentalbrain.com/mcp
https://app.carrentalbrain.com/api/v1/get_capabilitieshttps://app.carrentalbrain.com/api/v1/list_airports?country=Portugalhttps://app.carrentalbrain.com/api/v1/airport_costs?airport=FAO&month=2026-11&trip_days=7https://app.carrentalbrain.com/api/v1/compare_airports?country=Spain&sort_by=price_with_driverhttps://app.carrentalbrain.com/api/v1/supplier_terms?airport=FAOhttps://app.carrentalbrain.com/api/v1/build_search_link?airport=FAO&pickup_date=2026-11-18&dropoff_date=2026-11-25&extra_driver=trueChange the parameters freely: airport (IATA, id or name), month (YYYY-MM), trip_days, country, sort_by (price, price_with_driver, price_with_cover, deposit, debit, late_desk), pickup_date / dropoff_date (YYYY-MM-DD), extra_driver, automatic, debit_card, age, residence.
What you get: MEASURED, dated aggregates from our own repeated searches - true cost per day (car only, + second driver, + full cover, no-deposit, automatic), deposits, debit-card acceptance, desk hours. Not live offers: live prices for exact dates run in the person's own browser via the search link, where they book. More: https://carrentalbrain.com/llms.txt