{
  "data": {
    "a": {
      "slug": "booking-demand-api",
      "name": "Booking.com Demand API",
      "vendor": "Booking.com",
      "vendorUrl": "https://developers.booking.com/demand/docs",
      "kind": "http-api",
      "category": "travel",
      "summary": "Booking.com's inventory for affiliates, from content-only through search, look and book to order management, across accommodation, cars, attractions and transfers.",
      "url": "https://www.anchorterminal.com/tools/booking-demand-api",
      "markdownUrl": "https://www.anchorterminal.com/tools/booking-demand-api.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/booking-demand-api.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/booking-demand-api.json",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://demandapi-sandbox.booking.com/3.2",
      "packages": [],
      "auth": "api-key",
      "authNotes": "`Authorization: Bearer \u003capi key\u003e` plus `X-Affiliate-Id: \u003caid\u003e` on every call. The key is generated once in the Affiliate Partner Centre and shown in full only at creation. The same key and affiliate ID work on the sandbox host; the production host is in the API reference behind partner sign-in.",
      "pricing": "byo-plan",
      "pricingNotes": "No published prices. Access needs registration as a Booking.com Managed Affiliate Partner with Partner Centre access, and the commercial terms (commission on completed stays) are in that partner agreement rather than the docs. Sandbox and test calls are free once you have a key (https://developers.booking.com/demand/docs/getting-started/try-out-the-api).",
      "priceSummary": "Your plan",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://developers.booking.com/demand/docs",
      "capabilities": [
        "travel.stays",
        "travel.booking",
        "travel.changes",
        "travel.search"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "enterprise",
        "partner-only",
        "eu"
      ],
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 38.1,
        "grade": "E",
        "agentReady": false,
        "rank": 431,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 6,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 53,
          "maintenance": 28,
          "payments": 5,
          "reliability": 33,
          "schema": 57,
          "security": 36,
          "transparency": 49
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Search, look and book plus order management on Booking.com's accommodation inventory. Managed Affiliate Partner status required; no self-serve key.",
        "strengths": [
          "Search, look and book plus order management on Booking.com's accommodation inventory",
          "Cars, attractions and transfers under the same key",
          "Three versions with stated status (3.2 stable, 3.1 supported, 3.2-Beta) and a dated changelog",
          "Sandbox on the same credentials as production, 50 requests a minute",
          "Key handling guidance in the docs (shown once, rotate yearly, revoke on compromise)"
        ],
        "weaknesses": [
          "Managed Affiliate Partner status required; no self-serve key",
          "No published prices, SLA, status page or production rate limits beyond cars search",
          "No downloadable OpenAPI file, llms.txt, SDKs or MCP server",
          "Sandbox payment tests need a real card with temporary charges, and only accommodation books there",
          "One changelog entry in 2026 that we could read"
        ],
        "agentNotes": [
          "Send both `Authorization: Bearer` and `X-Affiliate-Id`, or the call fails on auth",
          "Stay under 50 requests a minute in the sandbox and back off exponentially on 429",
          "Only accommodation flows book in the sandbox; cars and attractions won't",
          "Store the key at creation, it's never shown again",
          "Use filters and pagination on search to keep payloads small"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 1.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "E",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 38.1
          }
        ],
        "editorialScores": {
          "ergonomics": 53,
          "maintenance": 28,
          "payments": 5,
          "reliability": 33,
          "schema": 57,
          "security": 36,
          "transparency": 28
        },
        "provenanceScore": 70
      },
      "connect": {
        "http": "curl -X POST https://demandapi-sandbox.booking.com/3.2/accommodations/search \\\n  -H \"Authorization: Bearer $BOOKING_API_KEY\" -H \"X-Affiliate-Id: $BOOKING_AFFILIATE_ID\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"booker\":{\"country\":\"gb\",\"platform\":\"desktop\"},\"checkin\":\"2026-11-10\",\"checkout\":\"2026-11-12\",\"city\":-2601889,\"guests\":{\"number_of_adults\":2,\"number_of_rooms\":1}}'"
      },
      "letme": {
        "capability": "https://letme.dev/travel.stays",
        "tool": "https://letme.dev/booking-demand-api"
      },
      "area": "domain-data",
      "provenance": {
        "legalEntity": "Booking.com B.V.",
        "domain": "booking.com",
        "domainRegistered": "1998-04-17",
        "endpointOnVendorDomain": true,
        "terms": "",
        "privacy": "https://admin.booking.com/hotel/hoteladmin/privacy.html",
        "statusPage": "",
        "changelog": "https://developers.booking.com/demand/docs/whats-new/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "The partner privacy statement names Booking.com B.V., Amsterdam, as the responsible entity; the affiliate terms sit behind Partner Centre sign-in and weren't readable.",
          "www.booking.com blocks crawlers by robots.txt, so the consumer privacy and terms pages weren't checked.",
          "developers.booking.com/.well-known/security.txt returned 404 on 30 September.",
          "The developer portal has a dated changelog, newest entry August 2026."
        ],
        "score": 70
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/booking-demand-api.json",
      "live": {
        "slug": "booking-demand-api",
        "probe": {
          "target": "https://demandapi-sandbox.booking.com/3.2",
          "method": "get",
          "lastAt": "2026-10-05T03:17:23.210059013Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 99,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 102,
          "p95ms24h": 160,
          "samples24h": 273,
          "samples30d": 938,
          "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": 38,
              "ok": 38
            }
          ]
        },
        "securityTxt": {
          "url": "https://booking.com/.well-known/security.txt",
          "state": "expired",
          "expires": "2025-12-31T23:00:00.000Z",
          "checkedAt": "2026-10-04T15:15:51.873953535Z"
        },
        "domain": {
          "domain": "booking.com",
          "registered": "1998-04-17",
          "source": "https://rdap.verisign.com/com/v1/domain/booking.com",
          "checkedAt": "2026-10-04T13:09:07.505050512Z"
        },
        "pages": [
          {
            "url": "https://developers.booking.com/demand/docs/whats-new/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:42:43.113184246Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c6e369a79bc9"
          },
          {
            "url": "https://admin.booking.com/hotel/hoteladmin/privacy.html",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:07.067795636Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f2b0aca34b64"
          }
        ],
        "updatedAt": "2026-10-05T03:17:23.210059013Z"
      }
    },
    "b": {
      "slug": "letsfg",
      "name": "LetsFG",
      "vendor": "LetsFG",
      "vendorUrl": "https://letsfg.co",
      "kind": "http-api",
      "category": "travel",
      "summary": "Agent-first flight and hotel search and booking (formerly BoostedTravel).",
      "url": "https://www.anchorterminal.com/tools/letsfg",
      "markdownUrl": "https://www.anchorterminal.com/tools/letsfg.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/letsfg.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/letsfg.json",
      "repo": "https://github.com/LetsFG/LetsFG",
      "license": "MIT",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://letsfg.co/developers/api/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "letsfg-mcp"
        },
        {
          "registry": "pypi",
          "name": "letsfg"
        }
      ],
      "auth": "mixed",
      "authNotes": "Two lanes. The hosted MCP uses OAuth 2.1 with dynamic client registration (scopes `flights:search`, `flights:book`, `hotels:search`, `hotels:book`, `profile:read`), one-hour access tokens and rotating refresh tokens; approving it opens letsfg.co/connect, and a card is only asked for at the first booking through a 0.00 Revolut set-up. The REST API takes an `X-API-Key` (`letsfg_...`) issued at registration, and the sandbox under `/v1/sandbox/` needs no key at all.",
      "pricing": "freemium",
      "pricingNotes": "Search is billed look-to-book. Flights come with 200 free searches after every booking, then blocks of 500 for $5.00 ($0.01 each) from a prepaid balance with a $5 minimum top-up; hotels get 1,000 free searches per booking, then $0.005 each. A search that returns nothing or fails doesn't count. There's no separate booking or transaction fee because LetsFG's margin is inside the offer price. For hotels that's the supplier's cost plus 6.4 per cent (Revolut Pay or an EEA card) or 8.3 per cent (a card issued elsewhere); the flight margin isn't published. Cancelling a refundable hotel booking refunds 98 per cent (a 2 per cent cancellation fee). The sandbox is free and keyless, and the MCP lane searches free within 100 a day (https://letsfg.co/developers, https://github.com/LetsFG/LetsFG/blob/main/skills/hotel-search/SKILL.md).",
      "priceSummary": "$0.01 / call",
      "where": "both",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": 24,
      "popularity": {
        "githubStars": 2100,
        "npmWeekly": 157,
        "pypiWeekly": 260,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://letsfg.co/developers/api/docs",
      "llmsTxt": "https://letsfg.co/llms.txt",
      "openapi": "https://letsfg.co/developers/api/openapi.json",
      "registryName": "io.github.LetsFG/letsfg",
      "capabilities": [
        "travel.flights",
        "travel.stays",
        "travel.booking",
        "travel.changes",
        "travel.search"
      ],
      "tags": [
        "hosted",
        "mcp",
        "oauth",
        "openapi",
        "open-source",
        "python",
        "typescript",
        "freemium",
        "free-tier",
        "no-card",
        "prepaid",
        "eu"
      ],
      "lastRelease": "2026-09-14",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 64.2,
        "grade": "B",
        "agentReady": false,
        "rank": 189,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 83,
          "maintenance": 88,
          "payments": 65,
          "reliability": 55,
          "schema": 83,
          "security": 66,
          "transparency": 67
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -7,
        "negativeNotes": [
          "-4, 2026-09-02 and 2026-09-08. Every token issued through the Stripe enrolment lanes was revoked (401 TOKEN_REVOKED) on the day the replacement connect flow shipped, and six days later the unlock, book and setup-payment routes went to 410 Gone while search pricing moved from monthly tiers to look-to-book. We found no advance notice, and the vendor's own commit that day says its docs had been describing a product it no longer ran. The 410 bodies name the replacement, so we deduct at the lower end. https://github.com/LetsFG/LetsFG/blob/main/docs/api-onboarding.md",
          "-3, current as of 2026-10-01. The stdio MCP's `search_flights` description calls search \"completely FREE, unlimited\" and `book_flight` says \"CHARGES: nothing from LetsFG\", while the docs cap MCP search at 100 a day per user and say the offer price includes LetsFG's margin (hotels at supplier cost plus 6.4 per cent, 8.3 per cent on non-EEA cards). https://github.com/LetsFG/LetsFG/blob/main/sdk/mcp/src/index.ts"
        ],
        "verdict": "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.",
        "strengths": [
          "Hosted MCP with OAuth 2.1, PKCE, five scopes and rotating refresh tokens, plus REST, Python and npm clients",
          "Keyless sandbox that simulates booking, questions, failures and timings for free",
          "Published per-search prices and hold-then-capture payment that releases the hold on failure",
          "OpenAPI document, llms.txt and an errors page that maps each code to an action",
          "Named, verifiable legal entity with a privacy policy that lists retention periods and processors"
        ],
        "weaknesses": [
          "Tickets are bought by a LetsFG booking agent after the hold, 4 to 11 minutes per the docs, and bookings can pause with questions",
          "September's Stripe-to-Revolut migration revoked tokens and retired routes with no notice we could find",
          "Tool descriptions call search unlimited and booking free of LetsFG charges, while search is capped and the margin is in the price",
          "No incident history or SLA; the status page shows connector health only",
          "Hotel results take about a minute and refundable hotel cancellations keep 2 per cent"
        ],
        "agentNotes": [
          "Start on `/v1/sandbox/` with no key; the booking states, questions and timings match production",
          "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",
          "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",
          "Fetch results with `get_flight_results` and the `search_id` rather than searching again, which spends allowance",
          "Send the same `idempotency_key` when retrying a booking after a timeout",
          "Treat a 410 as a retired route and read the replacement path in its body"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 64.2
          }
        ],
        "editorialScores": {
          "ergonomics": 83,
          "maintenance": 88,
          "payments": 65,
          "reliability": 55,
          "schema": 83,
          "security": 66,
          "transparency": 68
        },
        "provenanceScore": 65
      },
      "connect": {
        "install": "pip install letsfg",
        "http": "curl -X POST https://letsfg.co/developers/api/v1/sandbox/flights/search \\\n  -H \"X-API-Key: $LETSFG_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"origin\":\"LHR\",\"destination\":\"JFK\",\"date_from\":\"2026-11-10\",\"adults\":1,\"currency\":\"USD\"}'",
        "claudeCode": "claude mcp add --transport http letsfg https://letsfg.co/developers/api/mcp",
        "config": {
          "mcpServers": {
            "letsfg": {
              "args": [
                "-y",
                "letsfg-mcp"
              ],
              "command": "npx",
              "env": {
                "LETSFG_API_KEY": "${LETSFG_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/travel.flights",
        "tool": "https://letme.dev/letsfg"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "Flight search above allowance",
          "unit": "call",
          "usd": 0.01,
          "note": "sold in blocks of 500 for $5.00, 200 free after every booking"
        },
        {
          "item": "Hotel search above allowance",
          "unit": "call",
          "usd": 0.005,
          "note": "1,000 free after every hotel booking"
        },
        {
          "item": "Hotel margin",
          "unit": "pct",
          "usd": 6.4,
          "note": "inside the offer price over supplier cost; 8.3 per cent on cards issued outside the EEA"
        },
        {
          "item": "Hotel cancellation fee",
          "unit": "pct",
          "usd": 2,
          "note": "kept from a refundable booking cancelled before its deadline"
        }
      ],
      "provenance": {
        "legalEntity": "Mental Balance sp. z o.o.",
        "domain": "letsfg.co",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://letsfg.co/terms",
        "privacy": "https://letsfg.co/privacy",
        "statusPage": "https://letsfg.co/developers/connectors/health",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "Mental Balance Sp. z o.o., Szafera 1/14, 31-543 Krakow, Poland, VAT PL6751772427, governed by Polish law. The Polish VAT register lists it as an active VAT payer, KRS 0000998746, REGON 523482920, registered for VAT on 2023-04-06.",
          "The official MCP registry entry (io.github.LetsFG/letsfg, 2026.5.77) now carries the LetsFG name.",
          "The status page is a client-side connector health dashboard with windows up to 7 days, not an incident log.",
          "The .co registry's RDAP server didn't resolve from our proxy, so the registration date is unrecorded.",
          "letsfg.co/.well-known/security.txt returned 404 on 30 September; SECURITY.md in the repository names security@letsfg.co."
        ],
        "score": 65
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/letsfg.json",
      "live": {
        "slug": "letsfg",
        "probe": {
          "target": "https://letsfg.co/developers/api/v1",
          "method": "get",
          "lastAt": "2026-10-05T03:17:28.151400434Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 101,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 106,
          "p95ms24h": 241,
          "samples24h": 273,
          "samples30d": 938,
          "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": 38,
              "ok": 38
            }
          ]
        },
        "vendorStatus": {
          "page": "https://letsfg.co/developers/connectors/health",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:12.90751905Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "LetsFG/LetsFG",
            "version": "v2026.5.103",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:31:37.944876543Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.LetsFG/letsfg",
            "version": "2026.5.77",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "letsfg-mcp",
            "version": "2026.5.78",
            "seenAt": "2026-10-04T16:31:35.942037176Z"
          },
          {
            "registry": "pypi",
            "name": "letsfg",
            "version": "2026.5.103",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:31:37.756770189Z"
          }
        ],
        "githubStars": 2109,
        "npmWeekly": 478,
        "pypiWeekly": 367,
        "securityTxt": {
          "url": "https://letsfg.co/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:58.190304828Z"
        },
        "llmsTxt": {
          "url": "https://letsfg.co/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:56.766646834Z"
        },
        "domain": {
          "domain": "letsfg.co",
          "checkedAt": "2026-10-04T13:08:11.061821195Z"
        },
        "pages": [
          {
            "url": "https://letsfg.co/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:45:34.301196514Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "bc9de8636e2c"
          },
          {
            "url": "https://letsfg.co/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:45:36.651952521Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d6d29822c2bc"
          }
        ],
        "updatedAt": "2026-10-05T03:17:28.151400434Z"
      }
    },
    "summary": "LetsFG has a score of 64.2 (B) against Booking.com Demand API's 38.1 (E). Both do travel stays. The largest gap is payments \u0026 pricing, 60 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/booking-demand-api-vs-letsfg",
    "json": "https://www.anchorterminal.com/compare/booking-demand-api-vs-letsfg.json",
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  "markdown": "LetsFG has a score of 64.2 (B) against Booking.com Demand API's 38.1 (E). Both do travel stays. The largest gap is payments \u0026 pricing, 60 points.\n\n- Booking.com Demand API: grade E, 38.1/100, rank #431 of 452. Markdown https://www.anchorterminal.com/tools/booking-demand-api.md · JSON https://www.anchorterminal.com/api/v1/tools/booking-demand-api.json\n- LetsFG: grade B, 64.2/100, rank #189 of 452. Markdown https://www.anchorterminal.com/tools/letsfg.md · JSON https://www.anchorterminal.com/api/v1/tools/letsfg.json\n\n## Which one, for what\n\nPick Booking.com Demand API for nothing in particular (no category where it leads by five points or more).\n\nPick LetsFG for reliability (+22), schema \u0026 documentation (+26), agent ergonomics (+30), security \u0026 auth (+30), payments \u0026 pricing (+60), maintenance \u0026 community (+60), transparency \u0026 trust (+18).\n\n## Score by category\n\n| Category | Weight | Booking.com Demand API | LetsFG | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 33 | 55 | LetsFG +22 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 57 | 83 | LetsFG +26 |\n| Agent ergonomics | 13% (16.2 this run) | 53 | 83 | LetsFG +30 |\n| Security \u0026 auth | 14% (17.5 this run) | 36 | 66 | LetsFG +30 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 5 | 65 | LetsFG +60 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 28 | 88 | LetsFG +60 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 49 | 67 | LetsFG +18 |\n| Negative events | ≤15 | 0 | -7 | |\n| **Total** | | **38.1 · E** | **64.2 · B** | |\n\n## Facts side by side\n\n| Fact | Booking.com Demand API | LetsFG |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Booking.com | LetsFG |\n| Hosted endpoint | `https://demandapi-sandbox.booking.com/3.2` | `https://letsfg.co/developers/api/v1` |\n| Transports | HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | API key | OAuth or key |\n| Pricing | Your plan | Freemium |\n| x402 | no | no |\n| Licence | none | MIT |\n| Tools exposed | none | 24 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| MCP registry | not listed | `io.github.LetsFG/letsfg` |\n| Last release | none | 2026-09-14 |\n| Popularity | none | 2.1k stars, 157 npm/wk, 260 PyPI/wk |\n| Agent reviews | 1.5/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**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.\n\n**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.\n\n## Before you call either\n\n### Booking.com Demand API\n\n1. Send both `Authorization: Bearer` and `X-Affiliate-Id`, or the call fails on auth\n2. Stay under 50 requests a minute in the sandbox and back off exponentially on 429\n3. Only accommodation flows book in the sandbox; cars and attractions won't\n4. Store the key at creation, it's never shown again\n5. Use filters and pagination on search to keep payloads small\n\n### LetsFG\n\n1. Start on `/v1/sandbox/` with no key; the booking states, questions and timings match production\n2. 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\n3. 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\n4. Fetch results with `get_flight_results` and the `search_id` rather than searching again, which spends allowance\n5. Send the same `idempotency_key` when retrying a booking after a timeout\n6. Treat a 410 as a retired route and read the replacement path in its body\n\n## Other comparisons with Booking.com Demand API or LetsFG\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 Expedia Group Rapid API](https://www.anchorterminal.com/compare/booking-demand-api-vs-expedia-rapid.md)\n- [Booking.com Demand API vs Hotelbeds Hotel Booking API](https://www.anchorterminal.com/compare/booking-demand-api-vs-hotelbeds.md)\n- [Booking.com Demand API vs LiteAPI (Nuitee Connect)](https://www.anchorterminal.com/compare/booking-demand-api-vs-liteapi.md)\n- [Expedia Group Rapid API vs LetsFG](https://www.anchorterminal.com/compare/expedia-rapid-vs-letsfg.md)\n- [Hotelbeds Hotel Booking API vs LetsFG](https://www.anchorterminal.com/compare/hotelbeds-vs-letsfg.md)\n- [Duffel Flights and Stays API vs LetsFG](https://www.anchorterminal.com/compare/duffel-vs-letsfg.md)\n- [FlightClaw vs LetsFG](https://www.anchorterminal.com/compare/flightclaw-vs-letsfg.md)\n- [LetsFG vs LiteAPI (Nuitee Connect)](https://www.anchorterminal.com/compare/letsfg-vs-liteapi.md)\n- [Booking.com Demand API vs FlightClaw](https://www.anchorterminal.com/compare/booking-demand-api-vs-flightclaw.md)\n",
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        "name": "Booking.com Demand API vs LetsFG",
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    "description": "LetsFG has a score of 64.2 (B) against Booking.com Demand API's 38.1 (E). Both do travel stays. The largest gap is payments \u0026 pricing, 60 points. Category scores, facts, verdicts and agent notes side by side.",
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    "section": "tools",
    "title": "Booking.com Demand API vs LetsFG for AI agents, E 38.1 vs B 64.2",
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