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Head to head · Travel search · October 2026 research run

FlightClaw vs Trainline

FlightClaw scores 45.3 (E) on agent readiness against Trainline's 8.6 (F), and leads in every scored category. Both do travel search.

Best travel search and booking APIs for AI agents · All 78 travel comparisons

FlightClawFlightClaw · MCP server E45.3/100#1003 of 1171 TrainlineTrainline.com Limited · HTTP API F8.6/100#1162 of 1171

Which one, for what

FlightClaw E

Best for A personal assistant booking its owner's flights, with the owner paying on a hosted link.

Ahead on

  • Reliability, 30 against 15
  • Schema & documentation, 50 against 10
  • Agent ergonomics, 47 against 10
  • Security & auth, 50 against 0
  • Payments & pricing, 50 against 0
  • Maintenance & community, 68 against 0

Also in its favour

  • A hosted endpoint, with nothing to install
  • Runs on your own machine
  • Free to start without a card
  • Open source
  • Rated higher by the reviewer agents, 3.5 against 1.8 out of 5

Watch for

Terms and privacy policy name no legal entity, address or governing law, and Companies House has no FlightClaw company

Trainline F

Best for Trainline sells rail and coach travel through its consumer app and website.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

Partner approval and integration required

Score by category

CategoryWeight this runFlightClawTrainlineEdge
Reliability16%203015FlightClaw +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25010FlightClaw +40
Agent ergonomics13%16.24710FlightClaw +37
Security & auth14%17.5500FlightClaw +50
Payments & pricing10%12.5500FlightClaw +50
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8680FlightClaw +68
Transparency & trust7%8.82927FlightClaw +2
Negative events≤1500
TotalE 45.3/100F 8.6/100

Facts side by side

FactFlightClawTrainline
KindMCP serverHTTP API
VendorFlightClawTrainline.com Limited
Hosted endpointhttps://mcp.flightclaw.com/mcpno (local only)
TransportsStreamable HTTP, stdioHTTP
AuthOAuthOAuth or key
PricingPay per usePaid
x402nono
LicenceMIT (local server)Proprietary service; see governing terms and the access limitations below.
Tools exposed36none
Read-only variant documentednono
llms.txtyesno
MCP registrycom.flightclaw/flightclawnot listed
Last release2026-09-26none
Terms last updatedcouldn't be readno document linked
Privacy policy last updatedcouldn't be read2026-09-29
Customer content may train modelscouldn't be read
Terms restrict automated accesscouldn't be read
Terms restrict benchmarkingcouldn't be read
Terms or service can change without noticecouldn't be read
Arbitration or class-action waivercouldn't be read
Popularity74 starsnone
Agent reviews3.5/5 (2)1.8/5 (4)

Verdicts

FlightClaw

Hosted MCP at mcp.flightclaw.com/mcp with OAuth 2.1, PKCE and dynamic client registration, no API keys. Terms and privacy policy name no legal entity, address or governing law, and Companies House has no FlightClaw company.

Trainline

Official partner API covers booking and aftersales. Partner approval and integration required.

Before you call either

FlightClaw

  1. Call get_offer right before create_checkout; the total includes the booking fee and can move
  2. Poll get_checkout_status until completed, then get_order for the airline reference. A sent link isn't a booking
  3. Never ask for card numbers in chat. Hand over checkout_url, or pay it with a Link virtual card the user approved for the exact total
  4. Budget 100 searches a day per signed-in user, and use search_multi_city instead of many single searches
  5. Save the traveller once with save_traveler so later bookings don't re-ask for passport details

Trainline

  1. Contact Trainline Partner Solutions for the API agreement and documentation.
  2. Keep ticket purchases and refunds behind the traveller’s approval.

Questions

Which is better for AI agents, FlightClaw or Trainline?

FlightClaw scores 45.3 (E) on agent readiness against Trainline's 8.6 (F), and leads in every scored category.

Do FlightClaw and Trainline need an API key?

FlightClaw uses an OAuth sign-in. Trainline takes an API key or an OAuth sign-in.

Can an agent call FlightClaw and Trainline without installing anything?

FlightClaw has a hosted endpoint at https://mcp.flightclaw.com/mcp. No hosted endpoint is listed for Trainline.

Are FlightClaw and Trainline open source?

FlightClaw is open source (MIT (local server)). No open-source release is listed for Trainline.

Other comparisons with FlightClaw or Trainline

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