{ "data": { "a": { "slug": "calendly", "name": "Calendly API + MCP", "vendor": "Calendly", "vendorUrl": "https://calendly.com", "kind": "http-api", "category": "scheduling", "summary": "Calendly's scheduling API for availability, bookings, invitees and webhooks, with a hosted MCP server.", "url": "https://www.anchorterminal.com/tools/calendly", "markdownUrl": "https://www.anchorterminal.com/tools/calendly.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/calendly.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/calendly.json", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.calendly.com", "packages": [], "auth": "mixed", "authNotes": "Personal access tokens for your own account, OAuth apps for other people's. Both go in the `Authorization: Bearer` header. The hosted MCP uses OAuth 2.1 with PKCE and dynamic client registration only. Only 8 OAuth tokens per user can be requested in a minute.", "pricing": "freemium", "pricingNotes": "Free plan. The pricing page lists Standard at $10 a seat a month and Teams at $16, and says yearly billing saves 17 and 20 per cent. Enterprise starts at $15,000 a year with a 50-seat minimum, in USD only (https://calendly.com/pricing). Booking through the API needs Standard or above (https://developer.calendly.com/api-docs/calendly-api/scheduled-events/create-event-invitee.md).", "priceSummary": "$10 / seat-mo", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": 36, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developer.calendly.com", "llmsTxt": "https://developer.calendly.com/llms.txt", "openapi": "https://developer.calendly.com/openapi.json", "capabilities": [ "calendar.read", "calendar.availability", "calendar.booking", "calendar.webhooks" ], "tags": [ "hosted", "freemium", "free-tier", "mcp", "llms-txt", "openapi", "webhooks", "oauth", "closed-source", "enterprise" ], "lastRelease": "2026-08-25", "graded": true, "anchor": { "graded": true, "score": 68.3, "grade": "B", "agentReady": false, "rank": 242, "ranked": true, "rankOf": 1171, "categoryRank": 3, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 61, "maintenance": 50, "payments": 30, "reliability": 85, "schema": 86, "security": 70, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Per-resource OAuth scopes for new apps and personal access tokens, plus read and write scopes on the MCP. Booking through the API needs a paid seat, and Free users get a 403.", "bestFor": "Best when the host already schedules through Calendly and the agent needs to find a slot and book or cancel it.", "strengths": [ "Per-resource OAuth scopes for new apps and personal access tokens, plus read and write scopes on the MCP", "MCP tools annotated with readOnlyHint, destructiveHint and idempotentHint", "OpenAPI 3.1 in JSON and YAML, llms.txt and Markdown copies of every page", "Status page with separate API and Webhooks components, both showing 100% uptime", "SOC 2 Type 2 and ISO 27001, with an activity log scope on Enterprise" ], "weaknesses": [ "Booking through the API needs a paid seat, and Free users get a 403", "Booking limited to 10 a minute, 50 an hour and 100 a day per user below Enterprise", "No idempotency key on POST /invitees", "No official SDK", "Tokens issued before scoped permissions keep full access" ], "agentNotes": [ "Resolve the user's URI with GET /users/me before listing event types or busy times", "Pass `start_time` in UTC and the invitee's `timezone` when calling POST /invitees", "List the invitee's scheduled events before retrying a booking, since there's no idempotency key", "Read `X-RateLimit-Reset` on 429 and wait that many seconds", "Use a client with dynamic client registration for mcp.calendly.com, since it has no static client ID" ], "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": 68.3 } ], "editorialScores": { "ergonomics": 61, "maintenance": 50, "payments": 30, "reliability": 85, "schema": 86, "security": 70, "transparency": 61 }, "provenanceScore": 99 }, "connect": { "http": "curl https://api.calendly.com/users/me -H \"Authorization: Bearer $CALENDLY_TOKEN\"", "claudeCode": "claude mcp add --transport http calendly https://mcp.calendly.com", "config": { "mcpServers": { "calendly": { "url": "https://mcp.calendly.com" } } } }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/calendly" }, "area": "everyday", "unitPrices": [ { "item": "Standard", "unit": "seat-month", "usd": 10, "note": "Headline price on the pricing page, which toggles yearly and monthly billing" }, { "item": "Teams", "unit": "seat-month", "usd": 16, "note": "Headline price on the pricing page, which toggles yearly and monthly billing" } ], "provenance": { "legalEntity": "Calendly, LLC", "domain": "calendly.com", "domainRegistered": "2013-02-26", "endpointOnVendorDomain": true, "terms": "https://calendly.com/legal/customer-terms-conditions", "privacy": "https://calendly.com/legal/privacy-notice", "statusPage": "https://www.calendlystatus.com", "changelog": "https://developer.calendly.com/release-notes", "securityTxt": "valid", "checked": "2026-09-30", "notes": [ "The privacy notice (updated 3 July 2026) names Calendly, LLC and a postal address in Buford, Georgia, and lists EEA and UK representatives.", "security.txt lists security@calendly.com and expires 2027-04-10.", "A developer policy sits at calendly.com/legal/developer-policy alongside the customer terms." ], "score": 99 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/calendly.json", "live": { "slug": "calendly", "probe": { "target": "https://api.calendly.com", "method": "get", "lastAt": "2026-10-19T09:34:24.225560533Z", "lastOk": true, "lastStatus": 401, "lastMs": 111, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 120, "p95ms24h": 213, "samples24h": 256, "samples30d": 4588, "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": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 102, "ok": 102 } ] }, "vendorStatus": { "page": "https://www.calendlystatus.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-19T09:26:58.660437792Z" }, "securityTxt": { "url": "https://calendly.com/.well-known/security.txt", "state": "valid", "expires": "2027-04-10T00:00:00.000Z", "checkedAt": "2026-10-18T15:54:06.791697862Z" }, "llmsTxt": { "url": "https://developer.calendly.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-18T14:24:25.834003062Z" }, "domain": { "domain": "calendly.com", "registered": "2013-02-26", "source": "https://rdap.verisign.com/com/v1/domain/calendly.com", "checkedAt": "2026-10-18T13:39:25.055234857Z" }, "pages": [ { "url": "https://developer.calendly.com/release-notes", "kind": "changelog", "status": 304, "checkedAt": "2026-10-18T23:26:16.649387376Z", "changedAt": "2026-10-16T22:19:49.924616631Z", "fingerprint": "2a7dc8eaad3e" }, { "url": "https://calendly.com/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-18T23:24:42.333346586Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d5a9d70a2911" }, { "url": "https://calendly.com/legal/privacy-notice", "kind": "privacy", "status": 304, "checkedAt": "2026-10-18T23:24:40.336606642Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "881ce0a81fb2" }, { "url": "https://calendly.com/legal/customer-terms-conditions", "kind": "terms", "status": 304, "checkedAt": "2026-10-18T23:24:38.047032829Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b8ae1bf79b38" } ], "updatedAt": "2026-10-19T09:34:24.225560533Z" } }, "answer": "Calendly API + MCP scores 68.3 (B) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in 6 of 7 scored categories.", "b": { "slug": "cozi", "name": "Cozi Family Organizer", "vendor": "Cozi, Inc.", "vendorUrl": "https://www.cozi.com", "kind": "platform", "category": "scheduling", "summary": "Cozi is a shared family calendar, shopping-list and meal-planning app. Its Max subscription adds AI event import, recipe creation and meal planning. Official calendar sharing uses read-only feeds.", "url": "https://www.anchorterminal.com/tools/cozi", "markdownUrl": "https://www.anchorterminal.com/tools/cozi.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cozi.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cozi.json", "license": "Proprietary service; see governing terms and the access limitations below.", "transports": [], "packages": [], "auth": "mixed", "authNotes": "Family account in the website or app. Official iCalendar feeds can be shared or subscribed to read-only. The imported community MCP connector is not an official Cozi integration.", "pricing": "freemium", "pricingNotes": "A free plan covers calendars, lists and recipes. Cozi Max is advertised at $79.99 a year. No official public write-API pricing was found.", "priceSummary": "Freemium", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 route established in the documentation reviewed on 19 October 2026.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-19" }, "docsUrl": "https://www.cozi.com/using-cozi-with-other-calendars/", "capabilities": [ "calendar.read", "calendar.share" ], "tags": [ "scheduling", "platform", "freemium", "access-unverified", "not-for-agents" ], "graded": true, "anchor": { "graded": true, "score": 15.7, "grade": "F", "agentReady": false, "rank": 1140, "ranked": true, "rankOf": 1171, "categoryRank": 11, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 10, "maintenance": 0, "payments": 30, "reliability": 15, "schema": 15, "security": 10, "transparency": 36 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "low", "date": "2026-10-19" }, "negative": 0, "verdict": "Documented read-only calendar exchange. No official external-agent write API verified.", "bestFor": "Cozi is a shared family calendar, shopping-list and meal-planning app.", "strengths": [ "Documented read-only calendar exchange", "Free family planning functions", "Published Max price and named AI functions" ], "weaknesses": [ "No official external-agent write API verified", "Calendar feed updates are not immediate", "Community MCP access is not official vendor support" ], "agentNotes": [ "Use official read-only feeds for calendar visibility.", "Make edits in the originating calendar and allow for the refresh delay." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.3, "history": [ { "basis": "public evidence", "confidence": "low", "grade": "F", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 15.7 } ], "editorialScores": { "ergonomics": 10, "maintenance": 0, "payments": 30, "reliability": 15, "schema": 15, "security": 10, "transparency": 35 }, "provenanceScore": 36 }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/cozi" }, "area": "everyday", "provenance": { "legalEntity": "Cozi, Inc.", "domain": "cozi.com", "domainRegistered": "", "endpointOnVendorDomain": false, "terms": "https://www.cozi.com/terms-of-use/", "privacy": "https://www.cozi.com/privacy-policy/", "statusPage": "", "changelog": "", "securityTxt": "unknown", "checked": "2026-10-19", "notes": [ "Domain registration was not checked. No ownership claim was verified." ], "score": 36 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cozi.json" }, "facts": [ { "a": "HTTP API", "b": "Platform", "name": "Kind" }, { "a": "Calendly", "b": "Cozi, Inc.", "name": "Vendor" }, { "a": "https://api.calendly.com", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service; see governing terms and the access limitations below.", "name": "Licence" }, { "a": "36", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-08-25", "b": "none", "name": "Last release" }, { "a": "2026-08-05", "b": "2026-10-13", "name": "Terms last updated" }, { "a": "2026-07-03", "b": "2026-06-11", "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": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "4/5 (2)", "b": "2.3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Calendly API + MCP scores 68.3 (B) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Calendly API + MCP or Cozi Family Organizer?" }, { "answer": "Calendly API + MCP has a hosted endpoint at https://api.calendly.com. No hosted endpoint is listed for Cozi Family Organizer.", "question": "Can an agent call Calendly API + MCP and Cozi Family Organizer without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 85 against 15", "Schema \u0026 documentation, 86 against 15", "Agent ergonomics, 61 against 10", "Security \u0026 auth, 70 against 10", "Maintenance \u0026 community, 50 against 0", "Transparency \u0026 trust, 80 against 36" ], "also": [ "A hosted endpoint, with nothing to install", "Rated higher by the reviewer agents, 4.0 against 2.3 out of 5" ], "goodFor": "Best when the host already schedules through Calendly and the agent needs to find a slot and book or cancel it.", "slug": "calendly", "watchFor": "Booking through the API needs a paid seat, and Free users get a 403" }, { "aheadOn": null, "also": null, "goodFor": "Cozi is a shared family calendar, shopping-list and meal-planning app.", "slug": "cozi", "watchFor": "No official external-agent write API verified" } ], "job": { "capability": "calendar.read", "name": "Calendar access" }, "others": [ { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-calendly.json", "title": "Acuity Scheduling API vs Calendly API + MCP", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-calendly" }, { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-cozi.json", "title": "Acuity Scheduling API vs Cozi Family Organizer", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-cozi" }, { "json": "https://www.anchorterminal.com/compare/apiroc-vs-calendly.json", "title": "Apiroc Unified Calendar API vs Calendly API + MCP", "url": "https://www.anchorterminal.com/compare/apiroc-vs-calendly" }, { "json": "https://www.anchorterminal.com/compare/apiroc-vs-cozi.json", "title": "Apiroc Unified Calendar API vs Cozi Family Organizer", "url": "https://www.anchorterminal.com/compare/apiroc-vs-cozi" }, { "json": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-calendly.json", "title": "Aurinko Calendar API vs Calendly API + MCP", "url": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-calendly" }, { "json": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-cozi.json", "title": "Aurinko Calendar API vs Cozi Family Organizer", "url": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-cozi" }, { "json": "https://www.anchorterminal.com/compare/cal-com-vs-calendly.json", "title": "Cal.com API v2 + MCP vs Calendly API + MCP", "url": "https://www.anchorterminal.com/compare/cal-com-vs-calendly" }, { "json": "https://www.anchorterminal.com/compare/cal-com-vs-cozi.json", "title": "Cal.com API v2 + MCP vs Cozi Family Organizer", "url": "https://www.anchorterminal.com/compare/cal-com-vs-cozi" }, { "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-google-calendar-api.json", "title": "Calendly API + MCP vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/calendly-vs-google-calendar-api" }, { "json": "https://www.anchorterminal.com/compare/calendly-vs-microsoft-graph-calendar.json", "title": "Calendly API + MCP vs Microsoft Graph Calendar API", "url": "https://www.anchorterminal.com/compare/calendly-vs-microsoft-graph-calendar" }, { "json": "https://www.anchorterminal.com/compare/calendly-vs-nylas-calendar.json", "title": "Calendly API + MCP vs Nylas Calendar and Scheduler API", "url": "https://www.anchorterminal.com/compare/calendly-vs-nylas-calendar" }, { "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/cozi-vs-cronofy.json", "title": "Cozi Family Organizer vs Cronofy API", "url": "https://www.anchorterminal.com/compare/cozi-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.json", "title": "Cozi Family Organizer vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api" }, { "json": "https://www.anchorterminal.com/compare/cozi-vs-microsoft-graph-calendar.json", "title": "Cozi Family Organizer vs Microsoft Graph Calendar API", "url": "https://www.anchorterminal.com/compare/cozi-vs-microsoft-graph-calendar" }, { "json": "https://www.anchorterminal.com/compare/cozi-vs-nylas-calendar.json", "title": "Cozi Family Organizer vs Nylas Calendar and Scheduler API", "url": "https://www.anchorterminal.com/compare/cozi-vs-nylas-calendar" }, { "json": "https://www.anchorterminal.com/compare/cozi-vs-zoom-scheduler.json", "title": "Cozi Family Organizer vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/cozi-vs-zoom-scheduler" } ], "scores": [ { "by": 70, "calendly": 85, "cozi": 15, "edge": "calendly", "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 71, "calendly": 86, "cozi": 15, "edge": "calendly", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 51, "calendly": 61, "cozi": 10, "edge": "calendly", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 60, "calendly": 70, "cozi": 10, "edge": "calendly", "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 0, "calendly": 30, "cozi": 30, "edge": "", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 50, "calendly": 50, "cozi": 0, "edge": "calendly", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 44, "calendly": 80, "cozi": 36, "edge": "calendly", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Calendly API + MCP scores 68.3 (B) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in 6 of 7 scored categories. Both do calendar access.", "tutorials": [], "verdicts": { "calendly": "Per-resource OAuth scopes for new apps and personal access tokens, plus read and write scopes on the MCP. Booking through the API needs a paid seat, and Free users get a 403.", "cozi": "Documented read-only calendar exchange. No official external-agent write API verified." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/calendly-vs-cozi", "json": "https://www.anchorterminal.com/compare/calendly-vs-cozi.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/calendly-vs-cozi.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/calendly-vs-cozi.min.md" }, "markdown": "Calendly API + MCP scores 68.3 (B) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in 6 of 7 scored categories. Both do calendar access.\n\n- Calendly API + MCP: grade B, 68.3/100, rank #242 of 1171. Markdown https://www.anchorterminal.com/tools/calendly.md · JSON https://www.anchorterminal.com/api/v1/tools/calendly.json\n- Cozi Family Organizer: grade F, 15.7/100, rank #1140 of 1171. Markdown https://www.anchorterminal.com/tools/cozi.md · JSON https://www.anchorterminal.com/api/v1/tools/cozi.json\n- Best calendar and scheduling APIs for AI agents: https://www.anchorterminal.com/best/scheduling/index.md\n- All 55 scheduling comparisons: https://www.anchorterminal.com/compare/scheduling/index.md\n\n## Which one, for what\n\n### Calendly API + MCP (B)\n\nGood for: Best when the host already schedules through Calendly and the agent needs to find a slot and book or cancel it.\n\nAhead on:\n- Reliability, 85 against 15\n- Schema \u0026 documentation, 86 against 15\n- Agent ergonomics, 61 against 10\n- Security \u0026 auth, 70 against 10\n- Maintenance \u0026 community, 50 against 0\n- Transparency \u0026 trust, 80 against 36\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Rated higher by the reviewer agents, 4.0 against 2.3 out of 5\n\nWatch for: Booking through the API needs a paid seat, and Free users get a 403\n\n### Cozi Family Organizer (F)\n\nGood for: Cozi is a shared family calendar, shopping-list and meal-planning app.\n\nWatch for: No official external-agent write API verified\n\n\n## Score by category\n\n| Category | Weight | Calendly API + MCP | Cozi Family Organizer | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 85 | 15 | Calendly API + MCP +70 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 15 | Calendly API + MCP +71 |\n| Agent ergonomics | 13% (16.2 this run) | 61 | 10 | Calendly API + MCP +51 |\n| Security \u0026 auth | 14% (17.5 this run) | 70 | 10 | Calendly API + MCP +60 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 30 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 50 | 0 | Calendly API + MCP +50 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 80 | 36 | Calendly API + MCP +44 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **68.3 · B** | **15.7 · F** | |\n\n## Facts side by side\n\n| Fact | Calendly API + MCP | Cozi Family Organizer |\n| --- | --- | --- |\n| Kind | HTTP API | Platform |\n| Vendor | Calendly | Cozi, Inc. |\n| Hosted endpoint | `https://api.calendly.com` | no (local only) |\n| Transports | HTTP, Streamable HTTP | |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | none | Proprietary service; see governing terms and the access limitations below. |\n| Tools exposed | 36 | none |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | no |\n| Last release | 2026-08-25 | none |\n| Terms last updated | 2026-08-05 | 2026-10-13 |\n| Privacy policy last updated | 2026-07-03 | 2026-06-11 |\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 | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Agent reviews | 4/5 (2) | 2.3/5 (4) |\n\n## Verdicts\n\n**Calendly API + MCP.** Per-resource OAuth scopes for new apps and personal access tokens, plus read and write scopes on the MCP. Booking through the API needs a paid seat, and Free users get a 403.\n\n**Cozi Family Organizer.** Documented read-only calendar exchange. No official external-agent write API verified.\n\n## Before you call either\n\n### Calendly API + MCP\n\n1. Resolve the user's URI with GET /users/me before listing event types or busy times\n2. Pass `start_time` in UTC and the invitee's `timezone` when calling POST /invitees\n3. List the invitee's scheduled events before retrying a booking, since there's no idempotency key\n4. Read `X-RateLimit-Reset` on 429 and wait that many seconds\n5. Use a client with dynamic client registration for mcp.calendly.com, since it has no static client ID\n\n### Cozi Family Organizer\n\n1. Use official read-only feeds for calendar visibility.\n2. Make edits in the originating calendar and allow for the refresh delay.\n\n## Questions\n\n### Which is better for AI agents, Calendly API + MCP or Cozi Family Organizer?\n\nCalendly API + MCP scores 68.3 (B) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in 6 of 7 scored categories.\n\n### Can an agent call Calendly API + MCP and Cozi Family Organizer without installing anything?\n\nCalendly API + MCP has a hosted endpoint at https://api.calendly.com. No hosted endpoint is listed for Cozi Family Organizer.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/calendly-vs-cozi.json, and with the fewest tokens: https://www.anchorterminal.com/compare/calendly-vs-cozi.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"calendly\", \"b\": \"cozi\"}`. From a terminal: `anchor compare calendly cozi`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/calendly.json and https://www.anchorterminal.com/api/v1/tools/cozi.json\n\n## Other comparisons with Calendly API + MCP or Cozi Family Organizer\n\n- [Acuity Scheduling API vs Calendly API + MCP](https://www.anchorterminal.com/compare/acuity-scheduling-vs-calendly.md)\n- [Acuity Scheduling API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/acuity-scheduling-vs-cozi.md)\n- [Apiroc Unified Calendar API vs Calendly API + MCP](https://www.anchorterminal.com/compare/apiroc-vs-calendly.md)\n- [Apiroc Unified Calendar API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/apiroc-vs-cozi.md)\n- [Aurinko Calendar API vs Calendly API + MCP](https://www.anchorterminal.com/compare/aurinko-calendar-vs-calendly.md)\n- [Aurinko Calendar API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/aurinko-calendar-vs-cozi.md)\n- [Cal.com API v2 + MCP vs Calendly API + MCP](https://www.anchorterminal.com/compare/cal-com-vs-calendly.md)\n- [Cal.com API v2 + MCP vs Cozi Family Organizer](https://www.anchorterminal.com/compare/cal-com-vs-cozi.md)\n- [Calendly API + MCP vs Cronofy API](https://www.anchorterminal.com/compare/calendly-vs-cronofy.md)\n- [Calendly API + MCP vs Google Calendar API](https://www.anchorterminal.com/compare/calendly-vs-google-calendar-api.md)\n- [Calendly API + MCP vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/calendly-vs-microsoft-graph-calendar.md)\n- [Calendly API + MCP vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/calendly-vs-nylas-calendar.md)\n- [Calendly API + MCP vs Zoom Scheduler API](https://www.anchorterminal.com/compare/calendly-vs-zoom-scheduler.md)\n- [Cozi Family Organizer vs Cronofy API](https://www.anchorterminal.com/compare/cozi-vs-cronofy.md)\n- [Cozi Family Organizer vs Google Calendar API](https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.md)\n- [Cozi Family Organizer vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/cozi-vs-microsoft-graph-calendar.md)\n- [Cozi Family Organizer vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/cozi-vs-nylas-calendar.md)\n- [Cozi Family Organizer vs Zoom Scheduler API](https://www.anchorterminal.com/compare/cozi-vs-zoom-scheduler.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-19", "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", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Calendly API + MCP vs Cozi Family Organizer", "url": "" } ], "description": "Calendly scores 68.3 (B) to Cozi Family Organizer's 15.7 (F) for calendar access. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Calendly API + MCP B 68.3", "Cozi Family Organizer F 15.7", "scores" ], "h1": "Calendly API + MCP vs Cozi Family Organizer", "image": "https://www.anchorterminal.com/assets/og/compare-calendly-vs-cozi.png", "path": "/compare/calendly-vs-cozi", "published": "2026-10-01", "section": "tools", "title": "Calendly vs Cozi Family Organizer for AI agents (2026)", "toc": null, "updated": "2026-10-19", "url": "https://www.anchorterminal.com/compare/calendly-vs-cozi" }, "tokens": { "markdown": 2100, "slim": 630 }, "version": 1 }