flightdata

flightdata

flightdata is a small local bridge to the hosted HasData Google Flights MCP server, which returns Google Flights search results as JSON. Give it a departure, a destination and an outbound date, and it fetches matching itineraries: each option's price, total duration and stops, its flight legs with airline, flight number, aircraft, airports and times, and its CO2 emissions, plus the booking and departure tokens the upstream issues for following up on a chosen itinerary.

Searches cover one-way, round-trip and multi-city trips. They can be shaped by passenger mix (adults, children, infants in a seat or on a lap), travel class, carry-on bags, a maximum price, sort order (price, duration, emissions, departure or arrival time), stop limits, included or excluded airlines and connections, departure and return time windows, layover duration bounds, a maximum total duration, an emissions preference and a deep-search mode.

The bridge stores no fares of its own. It serves the upstream server's tool list locally, exactly as captured from the live endpoint, and forwards each tool call upstream, returning the result untouched. The captured surface is a single read-only fare search: there is no booking, reservation, ticketing or payment tool in it.

Tools

• hasdata_google_travel_flights_getGoogleFlights — search Google Flights. Required: departureId (IATA code or location kgmid; comma-separated multiples allowed), arrivalId (same formats), and outboundDate (yyyy-MM-dd). Optional: returnDate, type (roundTrip / oneWay / multiCity), multiCityJson, gl, hl, currency, travelClass (economy / premiumEconomy / business / first), showHidden, adults, children, infantsInSeat, infantsOnLap, sortBy (topFlights / price / departureTime / arrivalTime / duration / emissions), stops (nonStop / oneStopOrFewer / twoStopsOrFewer), excludeAirlines, includeAirlines, bags, maxPrice, outboundTimes, returnTimes, lessEmissions, layoverDuration, includeConnections, excludeConnections, maxDuration, deepSearch, departureToken and bookingToken. Returns per-itinerary price, duration, stops and legs, emissions, and booking/departure tokens.

Configuration

• HASDATA_GOOGLE_FLIGHTS_MCP_URL (optional) — override the upstream endpoint. Defaults to https://mcp.hasdata.com/mcp?apis=google_travel_flights. (The override hook is this rebuild's own labelled reconstruction.)
• HASDATA_API_KEY (optional) — when set, every upstream request carries an x-api-key: <key> header, for the caller's own HasData API key. When it is not set, no key header is sent. (The header name and the env name are pinned by the original's registry record; forwarding the key from this env var is a labelled reconstruction — the original surface was captured keyless.)

Forwarding mechanics

On the first tool call the client opens a streamable HTTP session with the upstream: a JSON-RPC initialize request (protocolVersion 2025-03-26, clientInfo name flightdata), then a notifications/initialized notification, then the tools/call request carrying the caller's arguments unchanged. When the upstream answers initialize with an Mcp-Session-Id header, that value rides on every later request of the session, which is reused for the life of the process. Replies may arrive as plain JSON or as server-sent events; both are read.

Successful upstream results pass through verbatim, including any isError flag the upstream sets. Failures — a JSON-RPC error, a non-2xx status, an unreadable response, or a request that cannot be completed — come back as an isError result whose text starts with flightdata error: (this rendering is this rebuild's own labelled reconstruction).

CLI

The tool is also a subcommand taking one JSON argument string:

npx @reneturcios/flightdata hasdata_google_travel_flights_getGoogleFlights '{"departureId":"SFO","arrivalId":"LHR","outboundDate":"2026-12-01","type":"oneWay","travelClass":"economy","stops":"nonStop"}'
npx @reneturcios/flightdata --version

Exit codes: 0 on success, 1 on an isError result, 2 on a usage error.

MCP server

npx -y @reneturcios/flightdata mcp

MCP client config:

{
  "mcpServers": {
    "flightdata": {
      "command": "npx",
      "args": ["-y", "@reneturcios/flightdata", "mcp"]
    }
  }
}

Docker

docker run -i ghcr.io/cloudcorprecords/flightdata
docker run --rm ghcr.io/cloudcorprecords/flightdata --version

The container's default command is mcp, so the first form is a stdio MCP server; any other arguments reach the CLI normally.

Development

npm install
npm run build
npm test
npm run dev

The test suite runs entirely against a stubbed JSON-RPC upstream — no live network calls.

License

MIT — see LICENSE.