Air Choose

MCP server for monitoring flight prices across multiple airline providers

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Read-only MCP server that monitors flight prices across multiple airline providers. An AI agent (Hermes, OpenClaw, Claude, etc.) adds, removes, and inspects watched routes through MCP tools; a background scheduler re-checks every watch hourly and queues new/cheaper offers for the agent to pick up. No ticket ordering — only available flight data.

Features

• Multi-provider — Kupibilet (worldwide), Ryanair (Europe), SpiceJet (India), Jetstar Asia (Asia-Pacific)
• Flights only — trains and other transport types are filtered out automatically
• Smart resolution — turn "Moscow → Thailand" into provider-specific airport/country codes
• Price drop detection — tracks best-ever prices per route, queues notifications when fares drop
• MCP-native — works with any MCP-compatible agent host

Quick Start

Local

git clone https://github.com/yourusername/air-choose.git
cd air-choose
npm install
node src/server.js

Docker

docker compose up -d

Wire into your agent

{
  "mcpServers": {
    "air-choose": {
      "command": "node",
      "args": ["/absolute/path/to/air-choose/src/server.js"]
    }
  }
}

Configuration

Env Variable	Default	Description
AIR_CHOOSE_INTERVAL_MS	3600000 (1 hour)	Scheduler re-check interval

Tools

Tool	Purpose
list_providers	See airline providers, coverage, browser requirements
resolve_location	Turn a place name into each provider's own codes
add_watch	Add a route to monitor (resolves + runs first check immediately)
remove_watch	Stop watching a route
list_watches	See everything currently watched
get_watch_offers	Current offers for one watch, sorted by price or date
poll_new_offers	Return + clear everything new since last call
force_check	Re-run a watch's check right now

Providers

Provider	Coverage	Auth	Notes
Kupibilet	Worldwide	No	Accepts ISO2 country codes directly
Ryanair	Europe	No	Can rate-limit (409) under heavy use
SpiceJet	India	Auto token	Calendar view, no exact departure times
Jetstar Asia	Asia-Pacific	Browser session	Excluded by default (Akamai)

Architecture

MCP Client (Hermes / Claude / ...)
        | JSON-RPC (stdio)
air-choose server
  |-- Tools (8)
  |-- Scheduler (hourly)
  |-- Provider Adapters (Kupibilet | Ryanair | SpiceJet | Jetstar)
  |-- JSON Store (watches | offers | pending)

Example Flow

Agent -> resolve_location({ query: "Moscow" })
Agent -> resolve_location({ query: "Thailand" })
Agent -> add_watch({
           originQuery: "Moscow",
           destinationQuery: "Thailand",
           dateFrom: "2026-07-21",
           dateTo: "2026-08-20"
         })
        -> Server resolves, runs check, returns offers sorted by price

... one hour later, scheduler re-checks ...

Agent -> poll_new_offers()
        -> Returns new or cheaper offers found since last poll

Testing

npm test           # unit tests
npm run test:e2e   # end-to-end (hits live APIs)
npm run test:all   # all tests

Legal

Reverse-engineered consumer-facing endpoints, not published partner APIs. Keep the hourly interval reasonable.

License

MIT