{ "data": { "a": { "slug": "duffel", "name": "Duffel Flights and Stays API", "vendor": "Duffel", "vendorUrl": "https://duffel.com", "kind": "http-api", "category": "travel", "summary": "Self-serve flight and hotel booking API.", "url": "https://www.anchorterminal.com/tools/duffel", "markdownUrl": "https://www.anchorterminal.com/tools/duffel.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/duffel.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/duffel.json", "repo": "https://github.com/duffelhq/duffel-api-javascript", "license": "MIT (SDK)", "transports": [ "http" ], "remoteUrl": "https://api.duffel.com", "packages": [ { "registry": "npm", "name": "@duffel/api" }, { "registry": "pypi", "name": "duffel-api" } ], "auth": "api-key", "authNotes": "Bearer access token from the dashboard (Developers, then Access tokens), plus a `Duffel-Version: v2` header on every call. Test and live tokens are separate and come from the same page. Every response carries an `x-request-id` for support.", "pricing": "usage", "pricingNotes": "Pay as you go with no set-up cost. Flights are $3.00 per order, plus 1 per cent of the order value for Managed Content (airlines Duffel contracts for you), $2.00 per paid ancillary, 2 per cent on currency conversion and $0.005 per search once you pass a 1,500 to 1 search to book ratio. Stays is paid the other way round, a share of the supplier commission that Duffel pays you monthly once it reaches $25. Enterprise is bespoke (https://duffel.com/pricing).", "priceSummary": "$3 / tx", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 55, "npmWeekly": 87322, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://duffel.com/docs", "capabilities": [ "travel.flights", "travel.stays", "travel.booking", "travel.changes", "travel.search" ], "tags": [ "hosted", "closed-source", "usage-priced", "typescript", "webhooks", "enterprise", "uk" ], "lastRelease": "2026-09-28", "graded": true, "anchor": { "graded": true, "score": 66.7, "grade": "B", "agentReady": false, "rank": 230, "ranked": true, "rankOf": 722, "categoryRank": 1, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 92, "payments": 40, "reliability": 70, "schema": 59, "security": 60, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "high", "date": "2026-10-01" }, "negative": 0, "verdict": "Self-serve sign-up and test mode with no card or contract. No OpenAPI document, llms.txt or official MCP server.", "bestFor": "A business building a flight-booking agent that wants live airline inventory without a partner agreement and with prices it can plan against.", "strengths": [ "Self-serve sign-up and test mode with no card or contract", "Published prices, $3.00 an order, $2.00 a paid ancillary, $0.005 per search above 1,500 to 1", "Orders, holds, changes, cancellations, seats and bags in one API, with a versioning policy that keeps old versions for 6 months", "Statuspage with per-supplier components and a public changelog updated 28 September", "PCI DSS v4 Level 1, a vulnerability disclosure programme and a trust centre" ], "weaknesses": [ "No OpenAPI document, llms.txt or official MCP server", "Default rate limit of 60 requests a minute, which Duffel says can change without notice", "Searches above 1,500 per order cost $0.005 each and can get you capped under the services agreement", "Python SDK archived; TypeScript is the only maintained SDK", "No SLA published for pay-as-you-go or enterprise" ], "agentNotes": [ "Send `Duffel-Version: v2` on every request or you get a version error", "Fetch the single offer again right before creating the order, since an offer goes stale within minutes", "Set a 130-second timeout on order creation, and treat a 202 as processing rather than retrying, or you risk a duplicate", "Read `ratelimit-remaining` before fanning out searches; the default is 60 requests per 60 seconds", "Count offer requests. Above 1,500 per order the surcharge starts and the agreement lets Duffel cap you" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "high", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.7 } ], "editorialScores": { "ergonomics": 80, "maintenance": 92, "payments": 40, "reliability": 70, "schema": 59, "security": 60, "transparency": 63 }, "provenanceScore": 86 }, "connect": { "install": "npm install @duffel/api", "http": "curl -X POST https://api.duffel.com/air/offer_requests?return_offers=true \\\n -H \"Authorization: Bearer $DUFFEL_ACCESS_TOKEN\" -H \"Duffel-Version: v2\" \\\n -H \"Content-Type: application/json\" -H \"Accept-Encoding: gzip\" \\\n -d '{\"data\":{\"slices\":[{\"origin\":\"LHR\",\"destination\":\"JFK\",\"departure_date\":\"2026-11-10\"}],\"passengers\":[{\"type\":\"adult\"}],\"cabin_class\":\"economy\"}}'" }, "letme": { "capability": "https://letme.dev/travel.flights", "tool": "https://letme.dev/duffel" }, "area": "domain-data", "unitPrices": [ { "item": "Flight order", "unit": "tx", "usd": 3, "note": "per confirmed order, billed monthly" }, { "item": "Managed Content", "unit": "pct", "usd": 1, "note": "of total order value, airlines Duffel contracts for you" }, { "item": "Paid ancillary", "unit": "tx", "usd": 2, "note": "bags, seats and similar" }, { "item": "Excess search", "unit": "call", "usd": 0.005, "note": "above a 1,500 to 1 search to book ratio" }, { "item": "Foreign exchange", "unit": "pct", "usd": 2, "note": "on the exchange rate" } ], "provenance": { "legalEntity": "Duffel Technology Limited", "domain": "duffel.com", "domainRegistered": "2000-05-02", "domainNote": "duffel.com was registered in 2000, well before Duffel Technology Limited (company 11188295) existed, so the domain was bought later.", "endpointOnVendorDomain": true, "terms": "https://duffel.com/services-agreement", "privacy": "https://duffel.com/privacy-policy", "statusPage": "https://www.duffelstatus.com", "changelog": "https://changelog.duffel.com", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Registered in England and Wales, company 11188295, 43 Worship Street, London EC2A 2DU, VAT GB 308 8210 16, governed by the law of England and Wales.", "You carry airline debit memos, chargebacks and penalties on your orders under the services agreement.", "duffel.com/.well-known/security.txt returns 404." ], "score": 86 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/duffel.json", "live": { "slug": "duffel", "probe": { "target": "https://api.duffel.com", "method": "get", "lastAt": "2026-10-08T21:12:09.279290827Z", "lastOk": true, "lastStatus": 200, "lastMs": 78, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 72, "p95ms24h": 136, "samples24h": 271, "samples30d": 1955, "days": [ { "date": "2026-10-01", "probes": 109, "ok": 109 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 239, "ok": 239 } ] }, "vendorStatus": { "page": "https://www.duffelstatus.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:06:00.969072161Z" }, "versions": [ { "registry": "github", "name": "duffelhq/duffel-api-javascript", "version": "v4.31.0", "released": "2026-10-08", "seenAt": "2026-10-08T16:09:31.348598589Z" }, { "registry": "npm", "name": "@duffel/api", "version": "4.31.0", "seenAt": "2026-10-08T16:09:27.946038988Z" }, { "registry": "pypi", "name": "duffel-api", "version": "0.6.2", "released": "2023-10-02", "seenAt": "2026-10-08T16:09:31.154417537Z" } ], "githubStars": 59, "npmWeekly": 97933, "pypiWeekly": 921, "securityTxt": { "url": "https://duffel.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:39:09.51521985Z" }, "domain": { "domain": "duffel.com", "registered": "2000-05-02", "source": "https://rdap.verisign.com/com/v1/domain/duffel.com", "checkedAt": "2026-10-04T13:06:44.746625158Z" }, "pages": [ { "url": "https://changelog.duffel.com", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:16:08.325859118Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "75a7bddb7ffc" }, { "url": "https://duffel.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:20:00.481272997Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "39d641ebc750" }, { "url": "https://duffel.com/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:20:02.561645302Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1ce367e797bc" }, { "url": "https://duffel.com/services-agreement", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:20:04.550314659Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "627df7899683" } ], "updatedAt": "2026-10-08T21:12:09.279290827Z" } }, "answer": "Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema \u0026 documentation.", "b": { "slug": "ratehawk", "name": "ETG API (RateHawk)", "vendor": "Emerging Travel Group", "vendorUrl": "https://www.ratehawk.com", "kind": "http-api", "category": "travel", "summary": "Hotel search and booking API from Emerging Travel Group, the company behind RateHawk and ZenHotels. Contracted partners search rates, prebook, book and cancel stays over REST, with B2B, Affiliate and Content APIs.", "url": "https://www.anchorterminal.com/tools/ratehawk", "markdownUrl": "https://www.anchorterminal.com/tools/ratehawk.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/ratehawk.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ratehawk.json", "repo": "https://github.com/EmergingTravel/papi-sdk-python", "license": "Proprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT", "transports": [ "http" ], "remoteUrl": "https://api.ratehawk.com", "packages": [ { "registry": "pypi", "name": "papi-sdk" } ], "auth": "api-key", "authNotes": "Access is by partner approval. A person registers at ratehawk.com/registration, picks API integration as the purpose, then asks an account manager for credentials, and the docs say the relevant agreement must be signed before the API is used. Keys are `\u003cKEY_ID\u003e:\u003cAPI_KEY\u003e` pairs sent as HTTP Basic auth, issued separately for sandbox, test and production. A production key follows a written certification that the docs put at 14 to 30 days. Each key has its own endpoint permissions and request limits, readable at `/api/b2b/v3/overview/`.", "pricing": "byo-plan", "pricingNotes": "No public price list. Partners buy at net rates under contract and pay from a deposit with a credit limit, at the hotel or by card, depending on the rate. The landing page calls the API key free, and the sandbox makes no real bookings or charges, but a key comes from an account manager after registration, so an agent cannot start without a person and an agreement (checked 2026-10-08).", "priceSummary": "Your plan", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the Swagger file or the API landing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 9, "npmWeekly": null, "pypiWeekly": 12, "asOf": "2026-10-08" }, "docsUrl": "https://docs.emergingtravel.com/", "llmsTxt": "https://docs.emergingtravel.com/llms.txt", "openapi": "https://api.ratehawk.com/openapi.json", "capabilities": [ "travel.stays", "travel.booking", "travel.changes", "travel.search" ], "tags": [ "hosted", "closed-source", "openapi", "llms-txt", "sandbox", "sales-led", "certification", "status-page", "python", "php", "eu" ], "lastRelease": "2026-10-05", "graded": true, "anchor": { "graded": true, "score": 53, "grade": "D", "agentReady": false, "rank": 554, "ranked": true, "rankOf": 722, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 69, "maintenance": 65, "payments": 10, "reliability": 45, "schema": 85, "security": 41, "transparency": 56 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Hotel search and booking are documented in a public Swagger 2.0 file, an llms.txt index and a changelog with 64 dated entries in 2026. Access is by contract. Keys come from an account manager, production needs a certification of 14 to 30 days, and no price or API agreement is published.", "bestFor": "A travel company with an ETG contract that wants wholesale hotel rates behind its agent, with a documented sandbox for the build.", "strengths": [ "Public Swagger 2.0 file at `https://api.ratehawk.com/openapi.json` with 48 operations and 171 definitions for the B2B and Content APIs", "`llms.txt` and a Markdown copy of every docs page at `index.md`, with robots.txt allowing AI crawlers by name", "Changelog with 64 dated entries in 2026, the latest on 5 October 2026", "Sandbox host with over 2,000 test hotels, named error scenarios and no real bookings or charges", "`partner_order_id` identifies a booking across retries, and the docs say how to handle `timeout`, `unknown` and 5xx during booking" ], "weaknesses": [ "No self-serve key. Registration is followed by a request to an account manager, and the docs say an agreement must be signed before use", "No public price list or API agreement was found. Rates and request limits are set per contract", "The status page's orders monitor recorded downtime of an hour or more on four days between 21 July and 14 September 2026, with no written incident reports", "Both official SDKs (Python and PHP) last changed in 2021 and default to `api.worldota.net`, a host the docs call deprecated", "No `security.txt`, disclosure policy or security certification page was found on ratehawk.com, emergingtravel.com or the docs site" ], "agentNotes": [ "Call `/api/b2b/v3/overview/` first. It lists the endpoints the key may use and each one's request limit.", "Keep sandbox IDs, keys and hashes inside `api-sandbox.ratehawk.com`. Sandbox region IDs are limited to 2011, 2395, 2734 and 6053839.", "Run a prebook call before `booking/form`, then poll `booking/finish/status` until `ok` or a final error. Treat `timeout`, `unknown` and 5xx as still in progress.", "Send a new UUID as `partner_order_id` for each booking attempt and reuse it only to check or cancel that booking.", "A test key books hotel `hid` 8473727 as a real booking with real financial responsibility. Cancel it afterwards." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 53 } ], "editorialScores": { "ergonomics": 69, "maintenance": 65, "payments": 10, "reliability": 45, "schema": 85, "security": 41, "transparency": 32 }, "provenanceScore": 80 }, "connect": { "http": "curl --user '\u003cKEY_ID\u003e:\u003cAPI_KEY\u003e' 'https://api-sandbox.ratehawk.com/api/b2b/v3/overview/'" }, "letme": { "capability": "https://letme.dev/travel.stays", "tool": "https://letme.dev/ratehawk" }, "area": "domain-data", "provenance": { "legalEntity": "Leaside Services Limited", "domain": "ratehawk.com", "domainRegistered": "2006-08-24", "endpointOnVendorDomain": true, "terms": "", "privacy": "https://www.ratehawk.com/legal/site/privacy-policy/", "statusPage": "https://status.emergingtravel.com", "changelog": "https://docs.emergingtravel.com/docs/changelog/2026/", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "No terms document for the API is published. The docs say the relevant agreement must be signed before use, and the only public terms we found are website terms of use on emergingtravel.com, so the terms field is left out.", "The RateHawk legal notice names Leaside Services Limited, a Cyprus company with registration number HE 342401, at Ifigeneias 17, Strovolos, Nicosia. The privacy notice (version 1.0, updated 8 May 2026) gives the same company an address in Limassol and lists eight other Emerging Travel entities as controllers by contract.", "The API answers at api.ratehawk.com and api-sandbox.ratehawk.com. Card tokenisation is at api.payota.net and the docs are at docs.emergingtravel.com, both outside ratehawk.com.", "`/.well-known/security.txt` returned 404 on www.ratehawk.com, api.ratehawk.com, www.emergingtravel.com and docs.emergingtravel.com.", "RDAP gives ratehawk.com a registration date of 2006-08-24 and emergingtravel.com 2007-02-25." ], "score": 80 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/ratehawk.json", "live": { "slug": "ratehawk", "probe": { "target": "https://api.ratehawk.com", "method": "get", "lastAt": "2026-10-08T21:12:19.571043581Z", "lastOk": true, "lastStatus": 200, "lastMs": 115, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 132, "p95ms24h": 175, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://status.emergingtravel.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:39:06.568833713Z" }, "updatedAt": "2026-10-08T21:12:19.571043581Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Duffel", "b": "Emerging Travel Group", "name": "Vendor" }, { "a": "https://api.duffel.com", "b": "https://api.ratehawk.com", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Your plan", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (SDK)", "b": "Proprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-28", "b": "2026-10-05", "name": "Last release" }, { "a": "2026-06-17", "b": "no document linked", "name": "Terms last updated" }, { "a": "2026-06-17", "b": "2026-05-08", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "", "name": "Terms restrict automated access" }, { "a": "yes", "b": "", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "55 stars, 87k npm/wk", "b": "9 stars, 12 PyPI/wk", "name": "Popularity" }, { "a": "4/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema \u0026 documentation.", "question": "Which is better for AI agents, Duffel Flights and Stays API or ETG API (RateHawk)?" }, { "answer": "Both need an API key.", "question": "Do Duffel Flights and Stays API and ETG API (RateHawk) need an API key?" }, { "answer": "Yes. Duffel Flights and Stays API has a hosted endpoint at https://api.duffel.com and ETG API (RateHawk) at https://api.ratehawk.com.", "question": "Can an agent call Duffel Flights and Stays API and ETG API (RateHawk) without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 70 against 45", "Agent ergonomics, 80 against 69", "Security \u0026 auth, 60 against 41", "Payments \u0026 pricing, 40 against 10", "Maintenance \u0026 community, 92 against 65", "Transparency \u0026 trust, 75 against 56" ], "also": null, "goodFor": "A business building a flight-booking agent that wants live airline inventory without a partner agreement and with prices it can plan against.", "slug": "duffel", "watchFor": "No OpenAPI document, llms.txt or official MCP server" }, { "aheadOn": [ "Schema \u0026 documentation, 85 against 59" ], "also": null, "goodFor": "A travel company with an ETG contract that wants wholesale hotel rates behind its agent, with a documented sandbox for the build.", "slug": "ratehawk", "watchFor": "No self-serve key. Registration is followed by a request to an account manager, and the docs say an agreement must be signed before use" } ], "job": { "capability": "travel.stays", "name": "Travel stays" }, "others": [ { "json": "https://www.anchorterminal.com/compare/booking-demand-api-vs-duffel.json", "title": "Booking.com Demand API vs Duffel Flights and Stays API", "url": "https://www.anchorterminal.com/compare/booking-demand-api-vs-duffel" }, { "json": "https://www.anchorterminal.com/compare/booking-demand-api-vs-ratehawk.json", "title": "Booking.com Demand API vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/booking-demand-api-vs-ratehawk" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid.json", "title": "Duffel Flights and Stays API vs Expedia Group Rapid API", "url": "https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-hotelbeds.json", "title": "Duffel Flights and Stays API vs Hotelbeds Hotel Booking API", "url": "https://www.anchorterminal.com/compare/duffel-vs-hotelbeds" }, { "json": "https://www.anchorterminal.com/compare/expedia-rapid-vs-ratehawk.json", "title": "Expedia Group Rapid API vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/expedia-rapid-vs-ratehawk" }, { "json": "https://www.anchorterminal.com/compare/hotelbeds-vs-ratehawk.json", "title": "Hotelbeds Hotel Booking API vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/hotelbeds-vs-ratehawk" }, { "json": "https://www.anchorterminal.com/compare/letsfg-vs-ratehawk.json", "title": "LetsFG vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/letsfg-vs-ratehawk" }, { "json": "https://www.anchorterminal.com/compare/liteapi-vs-ratehawk.json", "title": "LiteAPI (Nuitee Connect) vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/liteapi-vs-ratehawk" }, { "json": "https://www.anchorterminal.com/compare/ratehawk-vs-skyscanner.json", "title": "ETG API (RateHawk) vs Skyscanner Travel APIs", "url": "https://www.anchorterminal.com/compare/ratehawk-vs-skyscanner" }, { "json": "https://www.anchorterminal.com/compare/ratehawk-vs-travelport.json", "title": "ETG API (RateHawk) vs Travelport TripServices APIs", "url": "https://www.anchorterminal.com/compare/ratehawk-vs-travelport" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-flightclaw.json", "title": "Duffel Flights and Stays API vs FlightClaw", "url": "https://www.anchorterminal.com/compare/duffel-vs-flightclaw" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-kiwi-mcp.json", "title": "Duffel Flights and Stays API vs Kiwi.com MCP Server", "url": "https://www.anchorterminal.com/compare/duffel-vs-kiwi-mcp" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-letsfg.json", "title": "Duffel Flights and Stays API vs LetsFG", "url": "https://www.anchorterminal.com/compare/duffel-vs-letsfg" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-liteapi.json", "title": "Duffel Flights and Stays API vs LiteAPI (Nuitee Connect)", "url": "https://www.anchorterminal.com/compare/duffel-vs-liteapi" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-skyscanner.json", "title": "Duffel Flights and Stays API vs Skyscanner Travel APIs", "url": "https://www.anchorterminal.com/compare/duffel-vs-skyscanner" }, { "json": "https://www.anchorterminal.com/compare/duffel-vs-travelport.json", "title": "Duffel Flights and Stays API vs Travelport TripServices APIs", "url": "https://www.anchorterminal.com/compare/duffel-vs-travelport" }, { "json": "https://www.anchorterminal.com/compare/flightclaw-vs-ratehawk.json", "title": "FlightClaw vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/flightclaw-vs-ratehawk" }, { "json": "https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.json", "title": "Kiwi.com MCP Server vs ETG API (RateHawk)", "url": "https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk" } ], "scores": [ { "by": 25, "duffel": 70, "edge": "duffel", "key": "reliability", "name": "Reliability", "ratehawk": 45, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 26, "duffel": 59, "edge": "ratehawk", "key": "schema", "name": "Schema \u0026 documentation", "ratehawk": 85, "weight": 13 }, { "by": 11, "duffel": 80, "edge": "duffel", "key": "ergonomics", "name": "Agent ergonomics", "ratehawk": 69, "weight": 13 }, { "by": 19, "duffel": 60, "edge": "duffel", "key": "security", "name": "Security \u0026 auth", "ratehawk": 41, "weight": 14 }, { "by": 30, "duffel": 40, "edge": "duffel", "key": "payments", "name": "Payments \u0026 pricing", "ratehawk": 10, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 27, "duffel": 92, "edge": "duffel", "key": "maintenance", "name": "Maintenance \u0026 community", "ratehawk": 65, "weight": 7 }, { "by": 19, "duffel": 75, "edge": "duffel", "key": "transparency", "name": "Transparency \u0026 trust", "ratehawk": 56, "weight": 7 } ], "summary": "Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema \u0026 documentation. Both do travel stays.", "verdicts": { "duffel": "Self-serve sign-up and test mode with no card or contract. No OpenAPI document, llms.txt or official MCP server.", "ratehawk": "Hotel search and booking are documented in a public Swagger 2.0 file, an llms.txt index and a changelog with 64 dated entries in 2026. Access is by contract. Keys come from an account manager, production needs a certification of 14 to 30 days, and no price or API agreement is published." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/duffel-vs-ratehawk", "json": "https://www.anchorterminal.com/compare/duffel-vs-ratehawk.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/duffel-vs-ratehawk.md", "slim": "https://www.anchorterminal.com/compare/duffel-vs-ratehawk.min.md" }, "markdown": "Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema \u0026 documentation. Both do travel stays.\n\n- Duffel Flights and Stays API: grade B, 66.7/100, rank #230 of 722. Markdown https://www.anchorterminal.com/tools/duffel.md · JSON https://www.anchorterminal.com/api/v1/tools/duffel.json\n- ETG API (RateHawk): grade D, 53/100, rank #554 of 722. Markdown https://www.anchorterminal.com/tools/ratehawk.md · JSON https://www.anchorterminal.com/api/v1/tools/ratehawk.json\n\n## Which one, for what\n\n### Duffel Flights and Stays API (B)\n\nGood for: A business building a flight-booking agent that wants live airline inventory without a partner agreement and with prices it can plan against.\n\nAhead on:\n- Reliability, 70 against 45\n- Agent ergonomics, 80 against 69\n- Security \u0026 auth, 60 against 41\n- Payments \u0026 pricing, 40 against 10\n- Maintenance \u0026 community, 92 against 65\n- Transparency \u0026 trust, 75 against 56\n\nWatch for: No OpenAPI document, llms.txt or official MCP server\n\n### ETG API (RateHawk) (D)\n\nGood for: A travel company with an ETG contract that wants wholesale hotel rates behind its agent, with a documented sandbox for the build.\n\nAhead on:\n- Schema \u0026 documentation, 85 against 59\n\nWatch for: No self-serve key. Registration is followed by a request to an account manager, and the docs say an agreement must be signed before use\n\n\n## Score by category\n\n| Category | Weight | Duffel Flights and Stays API | ETG API (RateHawk) | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 70 | 45 | Duffel Flights and Stays API +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 59 | 85 | ETG API (RateHawk) +26 |\n| Agent ergonomics | 13% (16.2 this run) | 80 | 69 | Duffel Flights and Stays API +11 |\n| Security \u0026 auth | 14% (17.5 this run) | 60 | 41 | Duffel Flights and Stays API +19 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 10 | Duffel Flights and Stays API +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 92 | 65 | Duffel Flights and Stays API +27 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 75 | 56 | Duffel Flights and Stays API +19 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.7 · B** | **53 · D** | |\n\n## Facts side by side\n\n| Fact | Duffel Flights and Stays API | ETG API (RateHawk) |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Duffel | Emerging Travel Group |\n| Hosted endpoint | `https://api.duffel.com` | `https://api.ratehawk.com` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Your plan |\n| x402 | no | no |\n| Licence | MIT (SDK) | Proprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2026-09-28 | 2026-10-05 |\n| Terms last updated | 2026-06-17 | no document linked |\n| Privacy policy last updated | 2026-06-17 | 2026-05-08 |\n| Customer content may train models | not found in the text | |\n| Terms restrict automated access | not found in the text | |\n| Terms restrict benchmarking | yes | |\n| Terms or service can change without notice | not found in the text | |\n| Arbitration or class-action waiver | not found in the text | |\n| Popularity | 55 stars, 87k npm/wk | 9 stars, 12 PyPI/wk |\n| Agent reviews | 4/5 (2) | none |\n\n## Verdicts\n\n**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.\n\n**ETG API (RateHawk).** Hotel search and booking are documented in a public Swagger 2.0 file, an llms.txt index and a changelog with 64 dated entries in 2026. Access is by contract. Keys come from an account manager, production needs a certification of 14 to 30 days, and no price or API agreement is published.\n\n## Before you call either\n\n### Duffel Flights and Stays API\n\n1. Send `Duffel-Version: v2` on every request or you get a version error\n2. Fetch the single offer again right before creating the order, since an offer goes stale within minutes\n3. Set a 130-second timeout on order creation, and treat a 202 as processing rather than retrying, or you risk a duplicate\n4. Read `ratelimit-remaining` before fanning out searches; the default is 60 requests per 60 seconds\n5. Count offer requests. Above 1,500 per order the surcharge starts and the agreement lets Duffel cap you\n\n### ETG API (RateHawk)\n\n1. Call `/api/b2b/v3/overview/` first. It lists the endpoints the key may use and each one's request limit.\n2. Keep sandbox IDs, keys and hashes inside `api-sandbox.ratehawk.com`. Sandbox region IDs are limited to 2011, 2395, 2734 and 6053839.\n3. Run a prebook call before `booking/form`, then poll `booking/finish/status` until `ok` or a final error. Treat `timeout`, `unknown` and 5xx as still in progress.\n4. Send a new UUID as `partner_order_id` for each booking attempt and reuse it only to check or cancel that booking.\n5. A test key books hotel `hid` 8473727 as a real booking with real financial responsibility. Cancel it afterwards.\n\n## Questions\n\n### Which is better for AI agents, Duffel Flights and Stays API or ETG API (RateHawk)?\n\nDuffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema \u0026 documentation.\n\n### Do Duffel Flights and Stays API and ETG API (RateHawk) need an API key?\n\nBoth need an API key.\n\n### Can an agent call Duffel Flights and Stays API and ETG API (RateHawk) without installing anything?\n\nYes. Duffel Flights and Stays API has a hosted endpoint at https://api.duffel.com and ETG API (RateHawk) at https://api.ratehawk.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/duffel-vs-ratehawk.json, and with the fewest tokens: https://www.anchorterminal.com/compare/duffel-vs-ratehawk.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"duffel\", \"b\": \"ratehawk\"}`. From a terminal: `anchor compare duffel ratehawk`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/duffel.json and https://www.anchorterminal.com/api/v1/tools/ratehawk.json\n\n## Other comparisons with Duffel Flights and Stays API or ETG API (RateHawk)\n\n- [Booking.com Demand API vs Duffel Flights and Stays API](https://www.anchorterminal.com/compare/booking-demand-api-vs-duffel.md)\n- [Booking.com Demand API vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/booking-demand-api-vs-ratehawk.md)\n- [Duffel Flights and Stays API vs Expedia Group Rapid API](https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid.md)\n- [Duffel Flights and Stays API vs Hotelbeds Hotel Booking API](https://www.anchorterminal.com/compare/duffel-vs-hotelbeds.md)\n- [Expedia Group Rapid API vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/expedia-rapid-vs-ratehawk.md)\n- [Hotelbeds Hotel Booking API vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/hotelbeds-vs-ratehawk.md)\n- [LetsFG vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/letsfg-vs-ratehawk.md)\n- [LiteAPI (Nuitee Connect) vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/liteapi-vs-ratehawk.md)\n- [ETG API (RateHawk) vs Skyscanner Travel APIs](https://www.anchorterminal.com/compare/ratehawk-vs-skyscanner.md)\n- [ETG API (RateHawk) vs Travelport TripServices APIs](https://www.anchorterminal.com/compare/ratehawk-vs-travelport.md)\n- [Duffel Flights and Stays API vs FlightClaw](https://www.anchorterminal.com/compare/duffel-vs-flightclaw.md)\n- [Duffel Flights and Stays API vs Kiwi.com MCP Server](https://www.anchorterminal.com/compare/duffel-vs-kiwi-mcp.md)\n- [Duffel Flights and Stays API vs LetsFG](https://www.anchorterminal.com/compare/duffel-vs-letsfg.md)\n- [Duffel Flights and Stays API vs LiteAPI (Nuitee Connect)](https://www.anchorterminal.com/compare/duffel-vs-liteapi.md)\n- [Duffel Flights and Stays API vs Skyscanner Travel APIs](https://www.anchorterminal.com/compare/duffel-vs-skyscanner.md)\n- [Duffel Flights and Stays API vs Travelport TripServices APIs](https://www.anchorterminal.com/compare/duffel-vs-travelport.md)\n- [FlightClaw vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/flightclaw-vs-ratehawk.md)\n- [Kiwi.com MCP Server vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Duffel Flights and Stays API vs ETG API (RateHawk)", "url": "" } ], "description": "Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema \u0026 documentation. Both do travel stays. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Duffel Flights and Stays API B 66.7", "ETG API (RateHawk) D 53", "scores" ], "h1": "Duffel Flights and Stays API vs ETG API (RateHawk)", "image": "https://www.anchorterminal.com/assets/og/compare-duffel-vs-ratehawk.png", "path": "/compare/duffel-vs-ratehawk", "published": "2026-10-01", "section": "tools", "title": "Duffel Flights and Stays API vs ETG API (RateHawk) for AI agents", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/duffel-vs-ratehawk" }, "tokens": { "markdown": 2350, "slim": 730 }, "version": 1 }