LetsFG vs Travelport TripServices APIs

LetsFG

Hosted MCP with OAuth 2.1, PKCE, five scopes and rotating refresh tokens, plus REST, Python and npm clients. Tickets are bought by a LetsFG booking agent after the hold, 4 to 11 minutes per the docs, and bookings can pause with questions.

Travelport TripServices APIs

Public OpenAPI 3.0 files, Markdown docs and an llms.txt cover search, pricing, booking, ticketing, exchanges and hotel stays, with dated release notes through August 2026. Production needs a sales contract and certification with 15 days' notice. No price, API rate limit, status page or SLA is published, and the terms bar automated tools without written permission.

LetsFG

1. Start on /v1/sandbox/ with no key; the booking states, questions and timings match production
2. After book_flight, poll get_flight_booking every 20 to 30 seconds and answer questions before expires_at_ms; an unanswered price change fails the booking and releases the hold
3. Honour retry_after_seconds on a 429. Over MCP the limit is 10 searches per 10 minutes and 100 a day, and early retries lengthen the pause
4. Fetch results with get_flight_results and the search_id rather than searching again, which spends allowance
5. Send the same idempotency_key when retrying a booking after a timeout
6. Treat a 410 as a retired route and read the replacement path in its body

Travelport TripServices APIs

1. Request one token and cache it for 24 hours. Travelport declines certification for refreshing more often than every 23 hours without a stated reason
2. Send Accept-Encoding: gzip, deflate and XAUTH_TRAVELPORT_ACCESSGROUP (or TVP-PCC-CORE) on every call. Production traffic without compression is refused
3. Send offersPerPage on a journey-based search, or later calls can't reference its results. Cached searches last 12 minutes for GDS content and 34 for NDC
4. Commit a workbench within 30 minutes or it expires, and read Result/Error in the body even on HTTP 200
5. Get written authorisation for agent access before production. The terms bar automated tools and speculative or duplicate bookings