{ "data": { "a": { "slug": "cronofy", "name": "Cronofy API", "vendor": "Cronofy", "vendorUrl": "https://www.cronofy.com", "kind": "http-api", "category": "scheduling", "summary": "Calendar sync and scheduling API from a UK company.", "url": "https://www.anchorterminal.com/tools/cronofy", "markdownUrl": "https://www.anchorterminal.com/tools/cronofy.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cronofy.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cronofy.json", "repo": "https://github.com/cronofy/cronofy-node", "license": "MIT (SDKs)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.cronofy.com", "packages": [ { "registry": "npm", "name": "cronofy" }, { "registry": "pypi", "name": "pycronofy" } ], "auth": "mixed", "authNotes": "Each user connects through Cronofy's OAuth flow and gets an access token. Application-level calls such as Availability take the application's key as a Bearer token. The MCP server takes the `client_secret` of an internal application as a Bearer token for single-tenant use, or OAuth 2.0 for multi-tenant use.", "pricing": "paid", "pricingNotes": "Free developer account for building and testing. Emerging $819 a month billed yearly for up to 500 synced accounts, then $1.39 each a month. Growth $2,399 a month billed yearly for up to 3,000, then $0.69 each. Strategic is custom with priority support. The Meeting Agents add-on costs $0.79 an hour for 25 to 4,000 hours, with a $99 monthly minimum on its own and the first 24 hours free (https://www.cronofy.com/pricing).", "priceSummary": "$819 / mo", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 51, "npmWeekly": 10797, "pypiWeekly": 10097, "asOf": "2026-09-30" }, "docsUrl": "https://docs.cronofy.com/developers/", "llmsTxt": "https://docs.cronofy.com/llms.txt", "capabilities": [ "calendar.read", "calendar.write", "calendar.availability", "calendar.booking", "calendar.webhooks" ], "tags": [ "hosted", "mcp", "llms-txt", "webhooks", "typescript", "python", "enterprise", "eu", "closed-source" ], "lastRelease": "2026-09-25", "graded": true, "anchor": { "graded": true, "score": 64.2, "grade": "B", "agentReady": false, "rank": 359, "ranked": true, "rankOf": 950, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 76, "maintenance": 56, "payments": 30, "reliability": 85, "schema": 58, "security": 60, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "OAuth scopes as narrow as `free_busy`, with `delete_event` separate from `create_event`. Production pricing starts at $819 a month billed yearly.", "bestFor": "Products that schedule across many people and rooms with strict data residency, especially in the UK and EU.", "strengths": [ "OAuth scopes as narrow as `free_busy`, with `delete_event` separate from `create_event`", "Event writes keyed on your `event_id`, so a retried create updates instead of duplicating", "99.99% uptime guarantee on Emerging and Growth", "Retention published per data type, such as 30 days for third-party events after disconnection", "ISO 27001, 27018 and 27701, SOC 2 Type 2 and a public bug bounty" ], "weaknesses": [ "Production pricing starts at $819 a month billed yearly", "No OpenAPI spec or security.txt", "The changelog has no dates and its latest entries are years old", "MCP server is early access with no published tool list, and single-tenant mode takes the application secret", "429 guidance says only to pause, with no Retry-After" ], "agentNotes": [ "Call the data centre host the account was created in (api-uk, api-de and so on), since data never crosses regions", "Reuse the same `event_id` when retrying an event write, since Cronofy upserts on it", "Ask for `response_format` slots when you want bookable times rather than free periods", "On 423, ask the user to relink, since Cronofy has already emailed them", "Keep under 50 requests a second and 500 a minute, and pause on 429" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 64.2 } ], "editorialScores": { "ergonomics": 76, "maintenance": 56, "payments": 30, "reliability": 85, "schema": 58, "security": 60, "transparency": 58 }, "provenanceScore": 86 }, "connect": { "http": "curl -X POST https://api.cronofy.com/v1/availability \\\n -H \"Authorization: Bearer $CRONOFY_API_KEY\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"participants\":[{\"members\":[{\"sub\":\"acc_5ba21743f408617d1269ea1e\"}],\"required\":\"all\"}],\"required_duration\":{\"minutes\":30},\"query_periods\":[{\"start\":\"2026-10-01T09:00:00Z\",\"end\":\"2026-10-01T17:00:00Z\"}],\"response_format\":\"slots\"}'", "claudeCode": "claude mcp add --transport http cronofy https://api.cronofy.com/v1/mcp_server --header \"Authorization: Bearer $CRONOFY_CLIENT_SECRET\"", "config": { "mcpServers": { "cronofy": { "headers": { "Authorization": "Bearer ${CRONOFY_CLIENT_SECRET}" }, "url": "https://api.cronofy.com/v1/mcp_server" } } } }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/cronofy" }, "area": "everyday", "unitPrices": [ { "item": "Emerging", "unit": "month", "usd": 819, "note": "Up to 500 synced accounts, billed yearly" }, { "item": "Growth", "unit": "month", "usd": 2399, "note": "Up to 3,000 synced accounts, billed yearly" }, { "item": "Extra synced account on Emerging", "unit": "account-month", "usd": 1.39 }, { "item": "Extra synced account on Growth", "unit": "account-month", "usd": 0.69 } ], "provenance": { "legalEntity": "Cronofy Limited", "domain": "cronofy.com", "domainRegistered": "2014-10-06", "endpointOnVendorDomain": true, "terms": "https://docs.cronofy.com/policies/terms-of-service/", "privacy": "https://docs.cronofy.com/policies/privacy-notice/", "statusPage": "https://status.cronofy.com", "changelog": "https://changelog.cronofy.com", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The terms (updated 24 September 2026) name Cronofy Limited, company number 07878590, 9a Beck Street, Nottingham, under the laws of England and Wales.", "www.cronofy.com/.well-known/security.txt returns 404.", "The status page lists the API, Scheduler, Meeting Agents, conferencing services and each major calendar provider as separate components." ], "score": 86 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cronofy.json", "live": { "slug": "cronofy", "probe": { "target": "https://api.cronofy.com", "method": "get", "lastAt": "2026-10-10T03:53:24.59469974Z", "lastOk": true, "lastStatus": 404, "lastMs": 259, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 265, "p95ms24h": 328, "samples24h": 249, "samples30d": 2274, "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": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "vendorStatus": { "page": "https://status.cronofy.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-10T03:58:12.932218586Z" }, "versions": [ { "registry": "npm", "name": "cronofy", "version": "3.8.4", "seenAt": "2026-10-09T16:47:57.626871456Z" }, { "registry": "pypi", "name": "pycronofy", "version": "2.1.1", "released": "2026-09-25", "seenAt": "2026-10-09T16:47:59.465930971Z" } ], "githubStars": 51, "npmWeekly": 9980, "pypiWeekly": 8953, "securityTxt": { "url": "https://cronofy.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:39:42.039361056Z" }, "llmsTxt": { "url": "https://docs.cronofy.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-09T14:01:45.042845093Z" }, "domain": { "domain": "cronofy.com", "registered": "2014-10-06", "source": "https://rdap.verisign.com/com/v1/domain/cronofy.com", "checkedAt": "2026-10-04T13:09:51.714116739Z" }, "pages": [ { "url": "https://changelog.cronofy.com", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:33:42.551994811Z", "changedAt": "2026-10-06T16:06:18.545064584Z", "fingerprint": "aa435e15e7d5" }, { "url": "https://www.cronofy.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:49:19.684905082Z", "changedAt": "2026-10-07T18:11:31.63489498Z", "fingerprint": "ba68f3fd3ad3" }, { "url": "https://docs.cronofy.com/policies/privacy-notice/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-09T18:37:04.849443884Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e2e1ebea1a4c" }, { "url": "https://docs.cronofy.com/policies/terms-of-service/", "kind": "terms", "status": 304, "checkedAt": "2026-10-09T18:37:06.9803292Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7298fc93e38a" } ], "updatedAt": "2026-10-10T03:58:12.932218586Z" } }, "answer": "Cronofy API scores 64.2 (B) on agent readiness against Zoom Scheduler API's 50.6 (D), and leads in 6 of 7 scored categories.", "b": { "slug": "zoom-scheduler", "name": "Zoom Scheduler API", "vendor": "Zoom Communications, Inc.", "vendorUrl": "https://www.zoom.com", "kind": "http-api", "category": "scheduling", "summary": "Zoom's REST API for Zoom Scheduler, its appointment booking product. It reads schedules, availability and scheduled events, lists open slots, creates and cancels bookings and sends booking webhooks, with OAuth access on api.zoom.us.", "url": "https://www.anchorterminal.com/tools/zoom-scheduler", "markdownUrl": "https://www.anchorterminal.com/tools/zoom-scheduler.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/zoom-scheduler.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/zoom-scheduler.json", "license": "Proprietary service under the Zoom API Licence and Terms of Use", "transports": [ "http" ], "remoteUrl": "https://api.zoom.us/v2", "packages": [], "auth": "oauth", "authNotes": "OAuth 2.0 only. A person creates an app in the Zoom App Marketplace and picks Scheduler scopes. User apps use the authorisation code grant (PKCE supported) and get one-hour access tokens with 90-day refresh tokens. Server-to-Server OAuth apps exchange an account ID, client ID and client secret for a one-hour token with no user step, and an account administrator authorises the scopes. Granular scopes exist per operation, each with an `:admin` variant. The docs show refresh tokens and device codes sent as URL query parameters as one option.", "pricing": "paid", "pricingNotes": "Scheduler costs $5.99 a user a month, or $4.99 billed yearly, and is included in Workplace Business ($21.99 monthly). The pricing page lists \"Connect to Scheduler APIs\" under the paid Scheduler plan. Scheduler Basic is free with no card, with one booking page and one calendar, and whether it can call the API was not established. A 14-day trial is advertised. No per-call charge was found (checked 2026-10-09).", "priceSummary": "$5.99 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Scheduler reference, the rate limit and OAuth docs or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://developers.zoom.us/docs/api/scheduler/", "llmsTxt": "https://developers.zoom.us/llms.txt", "capabilities": [ "calendar.read", "calendar.availability", "calendar.booking", "calendar.webhooks" ], "tags": [ "hosted", "paid", "free-plan", "rest", "oauth", "webhooks", "llms-txt", "closed-source", "status-page", "soc2", "bug-bounty" ], "lastRelease": "2026-08-17", "graded": true, "anchor": { "graded": true, "score": 50.6, "grade": "D", "agentReady": false, "rank": 767, "ranked": true, "rankOf": 950, "categoryRank": 7, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 43, "maintenance": 28, "payments": 25, "reliability": 63, "schema": 61, "security": 54, "transparency": 69 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "Each of the 24 operations has its own granular OAuth scope, and Zoom Scheduler and the REST API are separate components on the status page. No operation moves a booking, no official SDK covers Scheduler, and Zoom's API terms forbid benchmarking or monitoring the service.", "bestFor": "An agent booking into a Zoom Scheduler user's or team's booking pages, with slot lookup, booking, cancellation and two webhooks.", "strengths": [ "Granular OAuth scopes per operation, with separate read, write, update and delete scopes and user and admin variants", "A slot lookup (`GET /scheduler/schedules/{scheduleId}/available_times`) and a booking call (`POST /scheduler/attendee`), added in July and June 2026", "llms.txt and a Markdown copy of the full reference, with request examples and 400, 401, 404, 409, 429 and 500 responses listed", "Rate limits published by plan. Every Scheduler operation is labelled Light, 30 requests a second on Pro", "SOC 2 Type 2 report (October 2024 to October 2025) names Zoom Scheduler and Zoom APIs in scope, and security.txt is valid to 2029" ], "weaknesses": [ "Zoom's API terms (section 3.7.9) forbid using the APIs to monitor availability or performance, or for benchmarking. This matters before any probe is run", "No operation moves a booking. `PATCH /scheduler/events/{eventId}` changes status, notes and no-show marks only", "No idempotency key or safe-retry guidance for booking writes was found in the reviewed documentation", "No official SDK covers Scheduler. Zoom Rivet 0.3.0 has no Scheduler module", "No downloadable OpenAPI file is linked, and the Markdown reference omits query and path parameters", "The API terms allow Zoom to change or deprecate APIs without prior notice and disclaim any uptime guarantee" ], "agentNotes": [ "Call `GET /scheduler/schedules/{scheduleId}/available_times` and book only a spot whose status is `available`", "Send `start_date_time` in ISO 8601 with the booker's IANA `time_zone` to `POST /scheduler/attendee`. Expect 409 on a conflict", "To move a booking, cancel it with `PATCH /scheduler/events/{eventId}` and `status` set to `cancelled`, then book the new slot", "List scheduled events before retrying a booking, because no idempotency key is documented", "Request a new Server-to-Server OAuth token every hour. That grant issues no refresh token" ], "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": 50.6 } ], "editorialScores": { "ergonomics": 43, "maintenance": 28, "payments": 25, "reliability": 63, "schema": 61, "security": 54, "transparency": 59 }, "provenanceScore": 79 }, "connect": { "http": "curl -H \"Authorization: Bearer $ZOOM_ACCESS_TOKEN\" \"https://api.zoom.us/v2/scheduler/schedules\"" }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/zoom-scheduler" }, "area": "everyday", "unitPrices": [ { "item": "Zoom Scheduler (the plan that lists Scheduler API access)", "unit": "seat-month", "usd": 5.99, "note": "Monthly billing. $4.99 a user a month billed yearly" } ], "provenance": { "legalEntity": "Zoom Communications, Inc.", "domain": "zoom.us", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://www.zoom.com/en/trust/legal/zoom-api-license-and-tou/", "privacy": "https://www.zoom.com/en/trust/privacy/privacy-statement/", "statusPage": "https://status.zoom.us", "changelog": "https://developers.zoom.us/changelog/", "securityTxt": "valid", "checked": "2026-10-09", "notes": [ "The Zoom API Licence and Terms of Use (last updated 16 July 2025) and the Privacy Statement (last updated 17 September 2026) both name Zoom Communications, Inc., 55 Almaden Blvd, Suite 600, San Jose, CA 95113.", "The API answers at https://api.zoom.us/v2 and tokens are issued at https://zoom.us/oauth/token. Legal pages sit on www.zoom.com.", "zoom.us/.well-known/security.txt gives a report form, security-reports@zoom.us, a PGP key and an expiry of 31 December 2029.", "status.zoom.us redirects to www.zoomstatus.com, an Atlassian Statuspage site.", "The registration date of zoom.us was not established. rdap.org answered 404 for the domain.", "The account holder's use of Scheduler itself falls under the Zoom Terms of Service (effective 11 August 2023), which the API terms cite for the definition of Customer Content." ], "score": 79 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/zoom-scheduler.json", "live": { "slug": "zoom-scheduler", "probe": { "target": "https://api.zoom.us/v2", "method": "get", "lastAt": "2026-10-10T03:53:51.07216497Z", "lastOk": true, "lastStatus": 404, "lastMs": 173, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 175, "p95ms24h": 303, "samples24h": 125, "samples30d": 125, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "vendorStatus": { "page": "https://status.zoom.us", "indicator": "minor", "summary": "Partially Degraded Service", "checkedAt": "2026-10-10T03:58:52.848555173Z" }, "pages": [ { "url": "https://developers.zoom.us/changelog/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:36:20.102873356Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e3b0c44298fc" }, { "url": "https://www.zoom.com/en/trust/privacy/privacy-statement/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:56:06.989690084Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "91c109d39062" }, { "url": "https://www.zoom.com/en/trust/legal/zoom-api-license-and-tou/", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:56:04.552901735Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c294e7e03b58" } ], "updatedAt": "2026-10-10T03:58:52.848555173Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Cronofy", "b": "Zoom Communications, Inc.", "name": "Vendor" }, { "a": "https://api.cronofy.com", "b": "https://api.zoom.us/v2", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth", "name": "Auth" }, { "a": "Paid", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (SDKs)", "b": "Proprietary service under the Zoom API Licence and Terms of Use", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-25", "b": "2026-08-17", "name": "Last release" }, { "a": "no date given", "b": "2025-07-16", "name": "Terms last updated" }, { "a": "no date given", "b": "2026-09-17", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "51 stars, 11k npm/wk, 10k PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "4/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Cronofy API scores 64.2 (B) on agent readiness against Zoom Scheduler API's 50.6 (D), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Cronofy API or Zoom Scheduler API?" }, { "answer": "Cronofy API takes an API key or an OAuth sign-in. Zoom Scheduler API uses an OAuth sign-in.", "question": "Do Cronofy API and Zoom Scheduler API need an API key?" }, { "answer": "Yes. Cronofy API has a hosted endpoint at https://api.cronofy.com and Zoom Scheduler API at https://api.zoom.us/v2.", "question": "Can an agent call Cronofy API and Zoom Scheduler API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 85 against 63", "Agent ergonomics, 76 against 43", "Security \u0026 auth, 60 against 54", "Payments \u0026 pricing, 30 against 25", "Maintenance \u0026 community, 56 against 28" ], "also": null, "goodFor": "Products that schedule across many people and rooms with strict data residency, especially in the UK and EU.", "slug": "cronofy", "watchFor": "Production pricing starts at $819 a month billed yearly" }, { "aheadOn": null, "also": null, "goodFor": "An agent booking into a Zoom Scheduler user's or team's booking pages, with slot lookup, booking, cancellation and two webhooks.", "slug": "zoom-scheduler", "watchFor": "Zoom's API terms (section 3.7.9) forbid using the APIs to monitor availability or performance, or for benchmarking. This matters before any probe is run" } ], "job": { "capability": "calendar.read", "name": "Calendar access" }, "others": [ { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-cronofy.json", "title": "Acuity Scheduling API vs Cronofy API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-zoom-scheduler.json", "title": "Acuity Scheduling API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/apiroc-vs-cronofy.json", "title": "Apiroc Unified Calendar API vs Cronofy API", "url": "https://www.anchorterminal.com/compare/apiroc-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/apiroc-vs-zoom-scheduler.json", "title": "Apiroc Unified Calendar API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/apiroc-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-cronofy.json", "title": "Aurinko Calendar API vs Cronofy API", "url": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.json", "title": "Aurinko Calendar API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/cal-com-vs-cronofy.json", "title": "Cal.com API v2 + MCP vs Cronofy API", "url": "https://www.anchorterminal.com/compare/cal-com-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/cal-com-vs-zoom-scheduler.json", "title": "Cal.com API v2 + MCP vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/cal-com-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/calendly-vs-cronofy.json", "title": "Calendly API + MCP vs Cronofy API", "url": "https://www.anchorterminal.com/compare/calendly-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/calendly-vs-zoom-scheduler.json", "title": "Calendly API + MCP vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/calendly-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api.json", "title": "Cronofy API vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api" }, { "json": "https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-calendar.json", "title": "Cronofy API vs Microsoft Graph Calendar API", "url": "https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-calendar" }, { "json": "https://www.anchorterminal.com/compare/cronofy-vs-nylas-calendar.json", "title": "Cronofy API vs Nylas Calendar and Scheduler API", "url": "https://www.anchorterminal.com/compare/cronofy-vs-nylas-calendar" }, { "json": "https://www.anchorterminal.com/compare/google-calendar-api-vs-zoom-scheduler.json", "title": "Google Calendar API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/google-calendar-api-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/microsoft-graph-calendar-vs-zoom-scheduler.json", "title": "Microsoft Graph Calendar API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/microsoft-graph-calendar-vs-zoom-scheduler" }, { "json": "https://www.anchorterminal.com/compare/nylas-calendar-vs-zoom-scheduler.json", "title": "Nylas Calendar and Scheduler API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/nylas-calendar-vs-zoom-scheduler" } ], "scores": [ { "by": 22, "cronofy": 85, "edge": "cronofy", "key": "reliability", "name": "Reliability", "weight": 16, "zoom-scheduler": 63 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 3, "cronofy": 58, "edge": "zoom-scheduler", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "zoom-scheduler": 61 }, { "by": 33, "cronofy": 76, "edge": "cronofy", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "zoom-scheduler": 43 }, { "by": 6, "cronofy": 60, "edge": "cronofy", "key": "security", "name": "Security \u0026 auth", "weight": 14, "zoom-scheduler": 54 }, { "by": 5, "cronofy": 30, "edge": "cronofy", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "zoom-scheduler": 25 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 28, "cronofy": 56, "edge": "cronofy", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "zoom-scheduler": 28 }, { "by": 3, "cronofy": 72, "edge": "cronofy", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "zoom-scheduler": 69 } ], "summary": "Cronofy API scores 64.2 (B) on agent readiness against Zoom Scheduler API's 50.6 (D), and leads in 6 of 7 scored categories. Both do calendar access.", "verdicts": { "cronofy": "OAuth scopes as narrow as `free_busy`, with `delete_event` separate from `create_event`. Production pricing starts at $819 a month billed yearly.", "zoom-scheduler": "Each of the 24 operations has its own granular OAuth scope, and Zoom Scheduler and the REST API are separate components on the status page. No operation moves a booking, no official SDK covers Scheduler, and Zoom's API terms forbid benchmarking or monitoring the service." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler", "json": "https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler.md", "slim": "https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler.min.md" }, "markdown": "Cronofy API scores 64.2 (B) on agent readiness against Zoom Scheduler API's 50.6 (D), and leads in 6 of 7 scored categories. Both do calendar access.\n\n- Cronofy API: grade B, 64.2/100, rank #359 of 950. Markdown https://www.anchorterminal.com/tools/cronofy.md · JSON https://www.anchorterminal.com/api/v1/tools/cronofy.json\n- Zoom Scheduler API: grade D, 50.6/100, rank #767 of 950. Markdown https://www.anchorterminal.com/tools/zoom-scheduler.md · JSON https://www.anchorterminal.com/api/v1/tools/zoom-scheduler.json\n- Best calendar and scheduling APIs for AI agents: https://www.anchorterminal.com/best/scheduling/index.md\n- All 45 scheduling comparisons: https://www.anchorterminal.com/compare/scheduling/index.md\n\n## Which one, for what\n\n### Cronofy API (B)\n\nGood for: Products that schedule across many people and rooms with strict data residency, especially in the UK and EU.\n\nAhead on:\n- Reliability, 85 against 63\n- Agent ergonomics, 76 against 43\n- Security \u0026 auth, 60 against 54\n- Payments \u0026 pricing, 30 against 25\n- Maintenance \u0026 community, 56 against 28\n\nWatch for: Production pricing starts at $819 a month billed yearly\n\n### Zoom Scheduler API (D)\n\nGood for: An agent booking into a Zoom Scheduler user's or team's booking pages, with slot lookup, booking, cancellation and two webhooks.\n\nWatch for: Zoom's API terms (section 3.7.9) forbid using the APIs to monitor availability or performance, or for benchmarking. This matters before any probe is run\n\n\n## Score by category\n\n| Category | Weight | Cronofy API | Zoom Scheduler API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 85 | 63 | Cronofy API +22 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 58 | 61 | Zoom Scheduler API +3 |\n| Agent ergonomics | 13% (16.2 this run) | 76 | 43 | Cronofy API +33 |\n| Security \u0026 auth | 14% (17.5 this run) | 60 | 54 | Cronofy API +6 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 25 | Cronofy API +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 56 | 28 | Cronofy API +28 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 69 | Cronofy API +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **64.2 · B** | **50.6 · D** | |\n\n## Facts side by side\n\n| Fact | Cronofy API | Zoom Scheduler API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Cronofy | Zoom Communications, Inc. |\n| Hosted endpoint | `https://api.cronofy.com` | `https://api.zoom.us/v2` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | MIT (SDKs) | Proprietary service under the Zoom API Licence and Terms of Use |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-25 | 2026-08-17 |\n| Terms last updated | no date given | 2025-07-16 |\n| Privacy policy last updated | no date given | 2026-09-17 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 51 stars, 11k npm/wk, 10k PyPI/wk | none |\n| Agent reviews | 4/5 (2) | none |\n\n## Verdicts\n\n**Cronofy API.** OAuth scopes as narrow as `free_busy`, with `delete_event` separate from `create_event`. Production pricing starts at $819 a month billed yearly.\n\n**Zoom Scheduler API.** Each of the 24 operations has its own granular OAuth scope, and Zoom Scheduler and the REST API are separate components on the status page. No operation moves a booking, no official SDK covers Scheduler, and Zoom's API terms forbid benchmarking or monitoring the service.\n\n## Before you call either\n\n### Cronofy API\n\n1. Call the data centre host the account was created in (api-uk, api-de and so on), since data never crosses regions\n2. Reuse the same `event_id` when retrying an event write, since Cronofy upserts on it\n3. Ask for `response_format` slots when you want bookable times rather than free periods\n4. On 423, ask the user to relink, since Cronofy has already emailed them\n5. Keep under 50 requests a second and 500 a minute, and pause on 429\n\n### Zoom Scheduler API\n\n1. Call `GET /scheduler/schedules/{scheduleId}/available_times` and book only a spot whose status is `available`\n2. Send `start_date_time` in ISO 8601 with the booker's IANA `time_zone` to `POST /scheduler/attendee`. Expect 409 on a conflict\n3. To move a booking, cancel it with `PATCH /scheduler/events/{eventId}` and `status` set to `cancelled`, then book the new slot\n4. List scheduled events before retrying a booking, because no idempotency key is documented\n5. Request a new Server-to-Server OAuth token every hour. That grant issues no refresh token\n\n## Questions\n\n### Which is better for AI agents, Cronofy API or Zoom Scheduler API?\n\nCronofy API scores 64.2 (B) on agent readiness against Zoom Scheduler API's 50.6 (D), and leads in 6 of 7 scored categories.\n\n### Do Cronofy API and Zoom Scheduler API need an API key?\n\nCronofy API takes an API key or an OAuth sign-in. Zoom Scheduler API uses an OAuth sign-in.\n\n### Can an agent call Cronofy API and Zoom Scheduler API without installing anything?\n\nYes. Cronofy API has a hosted endpoint at https://api.cronofy.com and Zoom Scheduler API at https://api.zoom.us/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cronofy\", \"b\": \"zoom-scheduler\"}`. From a terminal: `anchor compare cronofy zoom-scheduler`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cronofy.json and https://www.anchorterminal.com/api/v1/tools/zoom-scheduler.json\n\n## Other comparisons with Cronofy API or Zoom Scheduler API\n\n- [Acuity Scheduling API vs Cronofy API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-cronofy.md)\n- [Acuity Scheduling API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-zoom-scheduler.md)\n- [Apiroc Unified Calendar API vs Cronofy API](https://www.anchorterminal.com/compare/apiroc-vs-cronofy.md)\n- [Apiroc Unified Calendar API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/apiroc-vs-zoom-scheduler.md)\n- [Aurinko Calendar API vs Cronofy API](https://www.anchorterminal.com/compare/aurinko-calendar-vs-cronofy.md)\n- [Aurinko Calendar API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.md)\n- [Cal.com API v2 + MCP vs Cronofy API](https://www.anchorterminal.com/compare/cal-com-vs-cronofy.md)\n- [Cal.com API v2 + MCP vs Zoom Scheduler API](https://www.anchorterminal.com/compare/cal-com-vs-zoom-scheduler.md)\n- [Calendly API + MCP vs Cronofy API](https://www.anchorterminal.com/compare/calendly-vs-cronofy.md)\n- [Calendly API + MCP vs Zoom Scheduler API](https://www.anchorterminal.com/compare/calendly-vs-zoom-scheduler.md)\n- [Cronofy API vs Google Calendar API](https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api.md)\n- [Cronofy API vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-calendar.md)\n- [Cronofy API vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/cronofy-vs-nylas-calendar.md)\n- [Google Calendar API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/google-calendar-api-vs-zoom-scheduler.md)\n- [Microsoft Graph Calendar API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/microsoft-graph-calendar-vs-zoom-scheduler.md)\n- [Nylas Calendar and Scheduler API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/nylas-calendar-vs-zoom-scheduler.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "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": "Cronofy API vs Zoom Scheduler API", "url": "" } ], "description": "Cronofy scores 64.2 (B) to Zoom Scheduler's 50.6 (D) for calendar access. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Cronofy API B 64.2", "Zoom Scheduler API D 50.6", "scores" ], "h1": "Cronofy API vs Zoom Scheduler API", "image": "https://www.anchorterminal.com/assets/og/compare-cronofy-vs-zoom-scheduler.png", "path": "/compare/cronofy-vs-zoom-scheduler", "published": "2026-10-01", "section": "tools", "title": "Cronofy vs Zoom Scheduler for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/cronofy-vs-zoom-scheduler" }, "tokens": { "markdown": 2200, "slim": 630 }, "version": 1 }