EU261 answers, from real flight data

MCP server (Claude, ChatGPT, Cursor…)

Remote server, Streamable HTTP, no authentication. Tools: check_flight, estimate_compensation, airport_disruptions.

https://flybackclaims.com/api/mcp

In Claude, add it as a custom connector with this URL. In Claude Code:

claude mcp add --transport http flyback https://flybackclaims.com/api/mcp

Any client with a JSON config:

{
  "mcpServers": {
    "flyback": { "type": "http", "url": "https://flybackclaims.com/api/mcp" }
  }
}

REST API

OpenAPI 3.1: https://flybackclaims.com/openapi.json (works as a ChatGPT GPT Action).

GET https://flybackclaims.com/api/public/v1/flight?number=VY1842&date=2026-10-20&lang=es

{
  "found": true, "flight": "VY1842", "date": "2026-10-20", "airline": "Vueling",
  "from": "Seville", "to": "Barcelona", "status": "landed", "delay_minutes": 212,
  "regime": "EU261", "eligible": true, "per_passenger_eur": 250,
  "claim_url": "https://flybackclaims.com/es/flight/VY1842/2026-10-20?utm_source=api&utm_medium=open"
}

GET https://flybackclaims.com/api/public/v1/compensation?from=MAD&to=JFK&airline=IB&delay_minutes=240
GET https://flybackclaims.com/api/public/v1/disruptions?airport=MAD&date=2026-10-24
GET https://flybackclaims.com/api/public/v1/disruptions            # latest disruption events

Limits: flights we already have are unlimited; new lookups are capped per caller per day (429 when reached). Flights not flown yet return error: "future" with a watch_url.