dealdata

dealdata is a small local bridge to the hosted HasData Google Flights deals MCP server. Give it a plain-language trip idea — a beach escape, cherry blossom in Japan, a fireworks festival in Hong Kong — plus one origin airport, and Google chooses the destinations and travel dates, returning deals with outbound and return dates, price, flight duration, trip length, stops, operating airline, departure and arrival airports, and a direct Google Flights link. When Google shaped the search itself, a deal may also carry the typical price with its discount and a destination description with a photo, along with the date range Google derived from the query.

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 deals search: published fare data only, with no booking, reservation, ticketing or payment tool in it.

Tools

• hasdata_google_travel_flights_deals_getGoogleFlightsDeals — turn a trip description into Google Flights deals. Required: q (the plain-language trip description) and departureId (one origin airport as a 3-letter uppercase IATA code). Optional: arrivalId (pin one destination by IATA code or location kgmid; every fare filter requires it), type (round trip or one way), travelClass (economy, premium economy, business, first), outboundDate and returnDate (exact dates or windows), travelDuration (week, weekend, two weeks), tripLength (days, exact or range), stops, maxDuration (minutes per leg), maxPrice, includeAirlines / excludeAirlines, adults, children, infantsInSeat, infantsOnLap (the whole party must not exceed 9), and gl, hl, currency for localisation.

Configuration

• HASDATA_GOOGLE_FLIGHTS_DEALS_MCP_URL (optional) — override the upstream endpoint. Defaults to https://mcp.hasdata.com/mcp?apis=google_travel_flights_deals. (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 dealdata), 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 dealdata error: (this rendering is this rebuild's own labelled reconstruction).

CLI

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

npx @reneturcios/dealdata hasdata_google_travel_flights_deals_getGoogleFlightsDeals '{"q":"beach escape","departureId":"LAX"}'
npx @reneturcios/dealdata --version

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

MCP server

npx -y @reneturcios/dealdata mcp

MCP client config:

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

Docker

docker run -i ghcr.io/cloudcorprecords/dealdata
docker run --rm ghcr.io/cloudcorprecords/dealdata --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.