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Head to head · Travel stays · October 2026 research run

Booking.com Demand API vs Duffel Flights and Stays API

Duffel Flights and Stays API has a score of 66.9 (B) against Booking.com Demand API's 38.1 (E). Both do travel stays. The largest gap is maintenance & community, 64 points.

Booking.com Demand APIBooking.com · HTTP API E38.1/100#431 of 452 Duffel Flights and Stays APIDuffel · HTTP API B66.9/100#153 of 452

Which one, for what

Pick Booking.com Demand API for

No category where it leads by five points or more.

Pick Duffel Flights and Stays API for

  • reliability (+37)
  • agent ergonomics (+27)
  • security & auth (+24)
  • payments & pricing (+35)
  • maintenance & community (+64)
  • transparency & trust (+28)

Score by category

CategoryWeight this runBooking.com Demand APIDuffel Flights and Stays APIEdge
Reliability16%203370Duffel Flights and Stays API +37
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25759Duffel Flights and Stays API +2
Agent ergonomics13%16.25380Duffel Flights and Stays API +27
Security & auth14%17.53660Duffel Flights and Stays API +24
Payments & pricing10%12.5540Duffel Flights and Stays API +35
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82892Duffel Flights and Stays API +64
Transparency & trust7%8.84977Duffel Flights and Stays API +28
Negative events≤1500
Total38.1 · E66.9 · B

Facts side by side

FactBooking.com Demand APIDuffel Flights and Stays API
KindHTTP APIHTTP API
VendorBooking.comDuffel
Hosted endpointhttps://demandapi-sandbox.booking.com/3.2https://api.duffel.com
TransportsHTTPHTTP
AuthAPI keyAPI key
PricingYour planPay per use
x402nono
LicencenoneMIT (SDK)
Tools exposednonenone
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtnono
MCP registrynot listednot listed
Last releasenone2026-09-28
Popularitynone55 stars, 87k npm/wk
Agent reviews1.5/5 (2)4/5 (2)

Verdicts

Booking.com Demand API

Search, look and book plus order management on Booking.com's accommodation inventory. Managed Affiliate Partner status required; no self-serve key.

Duffel Flights and Stays API

Self-serve sign-up and test mode with no card or contract. No OpenAPI document, llms.txt or official MCP server.

Before you call either

Booking.com Demand API

  1. Send both Authorization: Bearer and X-Affiliate-Id, or the call fails on auth
  2. Stay under 50 requests a minute in the sandbox and back off exponentially on 429
  3. Only accommodation flows book in the sandbox; cars and attractions won't
  4. Store the key at creation, it's never shown again
  5. Use filters and pagination on search to keep payloads small

Duffel Flights and Stays API

  1. Send Duffel-Version: v2 on every request or you get a version error
  2. Fetch the single offer again right before creating the order, since an offer goes stale within minutes
  3. Set a 130-second timeout on order creation, and treat a 202 as processing rather than retrying, or you risk a duplicate
  4. Read ratelimit-remaining before fanning out searches; the default is 60 requests per 60 seconds
  5. Count offer requests. Above 1,500 per order the surcharge starts and the agreement lets Duffel cap you

Other comparisons with Booking.com Demand API or Duffel Flights and Stays API

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