AirTreks MCP Server

The complex-itinerary tool for AI agents. Multi-stop, round-the-world, open-jaw, surface segments - the trips that standard flight search can't handle. When your user asks for 3+ stops across continents, this server answers with routing analysis built on real AirTreks fare-construction data: 60+ carriers, 53 known dead legs, bookability rates measured from 1,400+ real fare attempts, and 20 proven routing templates from actual bookings.

Live endpoint: `https://mcp.airtreks.com/mcp` - free, no API key, 100 requests/day.

Now with real prices: a historical range for any route in under a second, live fares for a specific itinerary, and a full multi-stop trip priced across several tickets — the same trip can vary three-fold depending on how it is ticketed, and that is the part no other flight tool will tell you.

30-second setup

Claude Desktop

Settings → Connectors → Add custom connector → paste `https://mcp.airtreks.com/mcp`.

Claude Code

claude mcp add --transport http airtreks https://mcp.airtreks.com/mcp

Cursor

Add to `.cursor/mcp.json` (or Cursor Settings → MCP → Add new server):

{
  "mcpServers": {
    "airtreks": {
      "url": "https://mcp.airtreks.com/mcp"
    }
  }
}

No API key is needed for any tool, the consultant handoff included. A key is

optional and only raises your daily limit; append it to the URL if your client

cannot send custom headers, as claude.ai connectors cannot:

https://mcp.airtreks.com/mcp?key=at_your_key

ChatGPT

Settings → Apps & Connectors → enable Developer mode (Pro/Business plans) → add `https://mcp.airtreks.com/mcp` as a custom connector.

Any other MCP client

Same JSON shape as Cursor above (Streamable HTTP). Prefer stdio? Run it locally:

npx airtreks-mcp

Then ask your agent:

> Plan a round-the-world trip: San Francisco, Tokyo, Bangkok, Singapore, Delhi, Istanbul, London, back to San Francisco.

One call, one answer: a 6-stop RTW

Your user wants six stops around the world. Google Flights gives up. Alliance RTW booking sites will let them build it, then fail at ticketing. One `plan_route` call tells your agent what actually works:

{
  "cities": ["SFO", "NRT", "BKK", "SIN", "DEL", "IST", "LHR", "SFO"],
  "budget": "mid"
}

Real response, trimmed for length (the full version includes carrier alternatives and consultant notes for all 7 legs):

{
  "route": "SFO -> NRT -> BKK -> SIN -> DEL -> IST -> LHR -> SFO",
  "totalLegs": 7,
  "isRoundTrip": true,
  "direction": "westbound",
  "backtracking": false,
  "regionsCrossed": ["americas", "asia", "europe"],
  "recommended": {
    "approach": "custom",
    "confidence": "high",
    "reason": "7 legs — alliance fares have  SIN (leg 3)",
        "suggestion": "Bangkok to Singapore through Malaysia. Train, bus, or ultra-cheap LCC. Adds Malaysia and possibly Penang, KL, Melaka.",
        "savings": "Saves $100-250"
      }
    ]
  },
  "allianceFeasibility": {
    "starAlliance": { "viable": false, "summary": "Technically possible on Star Alliance but only 6% bookability at 7 legs. Custom build strongly recommended." },
    "oneworld": { "viable": false, "summary": "Technically possible on oneworld but only 6% bookability at 7 legs. Custom build strongly recommended." }
  }
}

That single call just told your agent four things it can't get anywhere else:

• Alliance RTW fares fail on this trip. 7 legs prices at 6% bookability - your user would build it, hit a wall at ticketing, and blame you.
• The build that works: a per-leg carrier plan - ANA transpacific, Turkish Airlines as the Asia-Europe bridge, each with alternatives and trade-offs.
• Where to not fly at all: Bangkok to Singapore is cheaper overland through Malaysia, saving $100-250 and adding a country.
• What it typically costs: `fare_product_match` puts this trip at $2,500-$8,000 economy on an alliance RTW fare, typically $3,000-$12,000 as a custom build.

Those are honest ranges, not quotes - exact pricing on a 7-leg mixed-carrier itinerary depends on fare-class availability the day you book. For a real number, `trip_idea_create` hands the full routing analysis to an AirTreks consultant who prices and books the actual ticket. Your user gets an expert who starts informed, not a form to fill out.

Tools

All tools are free and need no API key — 100 requests/day per IP.

Routing

Pricing

Consultant handoff

Submits real customer contact details, so only call it with the customer's

knowledge and consent. Repeat submissions of the same email + route inside 24

hours return the existing trip request rather than creating a duplicate.

Why this data is different

AirTreks has built complex multi-stop itineraries since 1987. This server exposes what that history taught us:

• Dead legs - city pairs that look bookable but fail on alliance fares, learned from 1,400+ real fare-construction failures
• Bookability rates by leg count - measured, not estimated (91% at 3-4 legs, 61% at 5-6, 6% at 7+)
• Poison carriers and hub fixes - we know what airline combinations break ticketing and what to route instead
• Proven routing templates from working with Multi-Stop and Around the World Intineraries for inviduals, families and large group

No other flight tool returns this because no other flight tool has priced these failures.

REST API (no MCP client required)

Every tool is also a plain REST endpoint - same tools, same rate limits, JSON in/out. For agent frameworks that consume REST instead of MCP:

curl -X POST https://mcp.airtreks.com/api/plan_route \
  -H "Content-Type: application/json" \
  -d '{"cities": ["LAX", "NRT", "BKK", "LHR", "LAX"]}'

Full OpenAPI 3.1 spec: `https://mcp.airtreks.com/openapi.json`

Rate limits

• Free: 100 requests/day per IP, no key needed — every tool, `trip_idea_create` included
• Registered: higher limits with an API key (`X-API-Key` header, or `?key=` for clients that cannot set headers)

Endpoints

License

AGPL-3.0-only