{ "data": { "a": { "slug": "agenda-hero", "name": "Agenda Hero", "vendor": "Agenda Hero, Inc.", "vendorUrl": "https://agendahero.com", "kind": "platform", "category": "scheduling", "summary": "Agenda Hero turns text, photos, PDFs and forwarded emails into calendar events and shareable family, team and school calendars on the web, iOS, Android and Chrome. Its MCP server lets Claude and ChatGPT edit them.", "url": "https://www.anchorterminal.com/tools/agenda-hero", "markdownUrl": "https://www.anchorterminal.com/tools/agenda-hero.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/agenda-hero.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/agenda-hero.json", "license": "Closed service. Terms of service and privacy policy are hosted by iubenda, whose robots.txt disallows those paths, so they weren't read. The App Store names Agenda Hero, Inc. as seller and copyright holder.", "transports": [ "streamable-http" ], "remoteUrl": "https://agendahero.com/api/mcp", "packages": [], "auth": "oauth", "authNotes": "The MCP server at https://agendahero.com/api/mcp takes a bearer token from Agenda Hero's own OAuth server, with dynamic client registration, client ID metadata documents, PKCE (S256), refresh tokens and a revocation endpoint. Scopes are calendars:read, events:read and events:write, plus openid and email for ChatGPT (https://agendahero.com/.well-known/oauth-authorization-server and https://agendahero.com/help/apps-and-extensions/ai-assistants). The person signs in to Agenda Hero and chooses Allow access on a consent screen that lists the scopes.", "pricing": "freemium", "pricingNotes": "Free at US$0 forever with no card, unlimited events from text and 10 image or PDF uploads. Plus US$5 a month for one person, Family US$10 a month for 6 Plus accounts, Organizations US$20 a month for 5 Plus accounts, billed monthly, with annual billing saving up to 50% (https://agendahero.com/pricing). The MCP connector works on any account, including free (https://agendahero.com/posts/connect-your-calendar-to-claude-and-chatgpt). Checked 21 October 2026.", "priceSummary": "$5 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 found on agendahero.com, its pricing page, help centre or OAuth metadata, checked 21 October 2026.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-21" }, "docsUrl": "https://agendahero.com/help/apps-and-extensions/ai-assistants", "capabilities": [ "calendar.read", "calendar.write", "calendar.share" ], "tags": [ "hosted", "official", "closed-source", "freemium", "free-tier", "no-card", "mcp", "oauth", "status-page", "ios", "android" ], "lastRelease": "2026-10-20", "graded": true, "anchor": { "graded": true, "score": 34.5, "grade": "F", "agentReady": false, "rank": 1115, "ranked": true, "rankOf": 1197, "categoryRank": 11, "methodology": "0.6", "run": "2026-10-01", "scores": { "ergonomics": 28, "maintenance": 58, "payments": 30, "reliability": 35, "schema": 18, "security": 38, "transparency": 52 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-21" }, "negative": 0, "verdict": "Agenda Hero is a freemium calendar app whose new MCP server lets Claude and ChatGPT read and edit a person's calendars under scoped OAuth, on free accounts too. Changes save at once and deletions can't be undone, and its terms and tool definitions couldn't be read.", "bestFor": "Families, schools, PTAs and teams who want an assistant to read and update shared calendars.", "strengths": [ "OAuth with three scopes, PKCE, dynamic registration and revocation, published in its own metadata.", "The connector works on the free plan, which needs no card.", "Events from outside sources are read-only to the assistant.", "Three iOS releases and the connector launch between 24 September and 20 October 2026." ], "weaknesses": [ "Deletions and edits save immediately with no review step, and removed events can't be restored.", "One consent grants read and write together, with no read-only option documented.", "Tools return event text written by schools and other calendar owners, with no injection guidance.", "Terms of service couldn't be read, and no security contact was found." ], "agentNotes": [ "Use the calendar's name as it appears in Agenda Hero; the tools find calendars by name.", "Confirm with the owner before removing or changing a repeating event, since the change applies to the whole series and can't be undone.", "Don't try to edit events that come from a source calendar. They're read-only here and must be changed where they live.", "Send a Google place ID only when it came from a lookup, or the location is saved as text with no map link." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "F", "methodology": "0.6", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 34.5 } ], "editorialScores": { "ergonomics": 28, "maintenance": 58, "payments": 30, "reliability": 35, "schema": 18, "security": 38, "transparency": 18 }, "provenanceScore": 86, "checked": { "categories": { "ergonomics": "2026-10-21", "maintenance": "2026-10-21", "payments": "2026-10-21", "reliability": "2026-10-21", "schema": "2026-10-21", "security": "2026-10-21", "transparency": "2026-10-21" }, "last": "2026-10-21", "oldest": "2026-10-21", "stale": false, "staleAfterDays": 90 } }, "connect": { "claudeCode": "claude mcp add --transport http agendahero https://agendahero.com/api/mcp", "config": { "mcpServers": { "agendahero": { "url": "https://agendahero.com/api/mcp" } } } }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/agenda-hero" }, "area": "everyday", "unitPrices": [ { "item": "Agenda Hero Plus", "unit": "month", "usd": 5, "note": "One person, billed monthly. Checked 21 October 2026." }, { "item": "Agenda Hero Family", "unit": "month", "usd": 10, "note": "6 Plus accounts." }, { "item": "Agenda Hero Organizations", "unit": "month", "usd": 20, "note": "5 Plus accounts." } ], "provenance": { "legalEntity": "Agenda Hero, Inc.", "domain": "agendahero.com", "domainRegistered": "2020-01-17", "endpointOnVendorDomain": true, "terms": "https://agendahero.com/tos", "privacy": "https://agendahero.com/privacy", "statusPage": "https://status.agendahero.com", "changelog": "https://agendahero.com/posts", "securityTxt": "none", "checked": "2026-10-21", "notes": [ "The terms and full privacy policy are iubenda embeds (www.iubenda.com/terms-and-conditions/67203807 and /privacy-policy/67203807). iubenda's robots.txt disallows both paths, so their text, dates and entity weren't used.", "status.agendahero.com is drawn by script, so its incident history couldn't be read.", "agendahero.com/.well-known/security.txt and /llms.txt return 404.", "RDAP gives a registration date of 2020-01-17 for agendahero.com." ], "score": 86 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/agenda-hero.json", "live": { "slug": "agenda-hero", "probe": { "target": "https://agendahero.com/api/mcp", "method": "get", "lastAt": "2026-10-21T21:42:30.657911635Z", "lastOk": true, "lastStatus": 401, "lastMs": 259, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 304, "p95ms24h": 592, "samples24h": 19, "samples30d": 19, "days": [ { "date": "2026-10-21", "probes": 19, "ok": 19 } ] }, "vendorStatus": { "page": "https://status.agendahero.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-21T20:18:13.831179877Z" }, "updatedAt": "2026-10-21T21:42:30.657911635Z" } }, "answer": "Calendly API + MCP scores 68.3 (B) on agent readiness against Agenda Hero's 34.5 (F), and leads in 5 of 7 scored categories. Agenda Hero leads on maintenance \u0026 community.", "b": { "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": 243, "ranked": true, "rankOf": 1197, "categoryRank": 3, "methodology": "0.6", "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": "0.6", "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, "checked": { "categories": { "ergonomics": "2026-10-01", "maintenance": "2026-10-01", "payments": "2026-10-01", "reliability": "2026-10-01", "schema": "2026-10-01", "security": "2026-10-01", "transparency": "2026-10-01" }, "last": "2026-10-01", "lastMoved": "2026-10-08", "oldest": "2026-10-01", "stale": false, "staleAfterDays": 90 } }, "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": "2026-10-21T21:42:36.980463014Z", "lastOk": true, "lastStatus": 401, "lastMs": 123, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 127, "p95ms24h": 208, "samples24h": 250, "samples30d": 5222, "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": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 229, "ok": 229 } ] }, "vendorStatus": { "page": "https://www.calendlystatus.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-21T21:38:02.734358678Z" }, "securityTxt": { "url": "https://calendly.com/.well-known/security.txt", "state": "valid", "expires": "2027-04-10T00:00:00.000Z", "checkedAt": "2026-10-21T15:59:39.868456385Z" }, "llmsTxt": { "url": "https://developer.calendly.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-21T14:33:15.220104278Z" }, "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": "2026-10-21T00:44:27.102574061Z", "changedAt": "2026-10-16T22:19:49.924616631Z", "fingerprint": "2a7dc8eaad3e" }, { "url": "https://calendly.com/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-21T00:42:54.671228078Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d5a9d70a2911" }, { "url": "https://calendly.com/legal/privacy-notice", "kind": "privacy", "status": 304, "checkedAt": "2026-10-21T00:42:52.688095795Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "881ce0a81fb2" }, { "url": "https://calendly.com/legal/customer-terms-conditions", "kind": "terms", "status": 304, "checkedAt": "2026-10-21T00:42:50.38586693Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b8ae1bf79b38" } ], "updatedAt": "2026-10-21T21:42:36.980463014Z" } }, "facts": [ { "a": "Platform", "b": "HTTP API", "name": "Kind" }, { "a": "Agenda Hero, Inc.", "b": "Calendly", "name": "Vendor" }, { "a": "https://agendahero.com/api/mcp", "b": "https://api.calendly.com", "name": "Hosted endpoint" }, { "a": "Streamable HTTP", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "OAuth", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Closed service. Terms of service and privacy policy are hosted by iubenda, whose robots.txt disallows those paths, so they weren't read. The App Store names Agenda Hero, Inc. as seller and copyright holder.", "b": "none", "name": "Licence" }, { "a": "none", "b": "36", "name": "Tools exposed" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-20", "b": "2026-08-25", "name": "Last release" }, { "a": "", "b": "2026-08-05", "name": "Terms last updated" }, { "a": "", "b": "2026-07-03", "name": "Privacy policy last updated" }, { "a": "", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "2.3/5 (4)", "b": "4/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Calendly API + MCP scores 68.3 (B) on agent readiness against Agenda Hero's 34.5 (F), and leads in 5 of 7 scored categories. Agenda Hero leads on maintenance \u0026 community.", "question": "Which is better for AI agents, Agenda Hero or Calendly API + MCP?" }, { "answer": "Yes. Agenda Hero has a hosted endpoint at https://agendahero.com/api/mcp and Calendly API + MCP at https://api.calendly.com.", "question": "Can an agent call Agenda Hero and Calendly API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Maintenance \u0026 community, 58 against 50" ], "also": [ "Free to start without a card" ], "goodFor": "Families, schools, PTAs and teams who want an assistant to read and update shared calendars.", "slug": "agenda-hero", "watchFor": "Deletions and edits save immediately with no review step, and removed events can't be restored." }, { "aheadOn": [ "Reliability, 85 against 35", "Schema \u0026 documentation, 86 against 18", "Agent ergonomics, 61 against 28", "Security \u0026 auth, 70 against 38", "Transparency \u0026 trust, 80 against 52" ], "also": [ "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" } ], "job": { "capability": "calendar.read", "name": "Calendar access" }, "others": [ { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.json", "title": "Acuity Scheduling API vs Agenda Hero", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero" }, { "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/agenda-hero-vs-apiroc.json", "title": "Agenda Hero vs Apiroc Unified Calendar API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-apiroc" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-aurinko-calendar.json", "title": "Agenda Hero vs Aurinko Calendar API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-aurinko-calendar" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-cal-com.json", "title": "Agenda Hero vs Cal.com API v2 + MCP", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-cal-com" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-cozi.json", "title": "Agenda Hero vs Cozi Family Organizer", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-cozi" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-cronofy.json", "title": "Agenda Hero vs Cronofy API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-cronofy" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-google-calendar-api.json", "title": "Agenda Hero vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-google-calendar-api" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-microsoft-graph-calendar.json", "title": "Agenda Hero vs Microsoft Graph Calendar API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-microsoft-graph-calendar" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-nylas-calendar.json", "title": "Agenda Hero vs Nylas Calendar and Scheduler API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-nylas-calendar" }, { "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-zoom-scheduler.json", "title": "Agenda Hero vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-zoom-scheduler" }, { "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/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/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/calendly-vs-cozi.json", "title": "Calendly API + MCP vs Cozi Family Organizer", "url": "https://www.anchorterminal.com/compare/calendly-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" } ], "scores": [ { "agenda-hero": 35, "by": 50, "calendly": 85, "edge": "calendly", "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "agenda-hero": 18, "by": 68, "calendly": 86, "edge": "calendly", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "agenda-hero": 28, "by": 33, "calendly": 61, "edge": "calendly", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "agenda-hero": 38, "by": 32, "calendly": 70, "edge": "calendly", "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "agenda-hero": 30, "by": 0, "calendly": 30, "edge": "", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "agenda-hero": 58, "by": 8, "calendly": 50, "edge": "agenda-hero", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "agenda-hero": 52, "by": 28, "calendly": 80, "edge": "calendly", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Calendly API + MCP scores 68.3 (B) on agent readiness against Agenda Hero's 34.5 (F), and leads in 5 of 7 scored categories. Agenda Hero leads on maintenance \u0026 community. Both do calendar access.", "tutorials": [], "verdicts": { "agenda-hero": "Agenda Hero is a freemium calendar app whose new MCP server lets Claude and ChatGPT read and edit a person's calendars under scoped OAuth, on free accounts too. Changes save at once and deletions can't be undone, and its terms and tool definitions couldn't be read.", "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/agenda-hero-vs-calendly", "json": "https://www.anchorterminal.com/compare/agenda-hero-vs-calendly.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/agenda-hero-vs-calendly.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/agenda-hero-vs-calendly.min.md" }, "markdown": "Calendly API + MCP scores 68.3 (B) on agent readiness against Agenda Hero's 34.5 (F), and leads in 5 of 7 scored categories. Agenda Hero leads on maintenance \u0026 community. Both do calendar access.\n\n- Agenda Hero: grade F, 34.5/100, rank #1115 of 1197. Markdown https://www.anchorterminal.com/tools/agenda-hero.md · JSON https://www.anchorterminal.com/api/v1/tools/agenda-hero.json\n- Calendly API + MCP: grade B, 68.3/100, rank #243 of 1197. Markdown https://www.anchorterminal.com/tools/calendly.md · JSON https://www.anchorterminal.com/api/v1/tools/calendly.json\n- Best calendar and scheduling APIs for AI agents: https://www.anchorterminal.com/best/scheduling/index.md\n- All 66 scheduling comparisons: https://www.anchorterminal.com/compare/scheduling/index.md\n\n## Which one, for what\n\n### Agenda Hero (F)\n\nGood for: Families, schools, PTAs and teams who want an assistant to read and update shared calendars.\n\nAhead on:\n- Maintenance \u0026 community, 58 against 50\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: Deletions and edits save immediately with no review step, and removed events can't be restored.\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 35\n- Schema \u0026 documentation, 86 against 18\n- Agent ergonomics, 61 against 28\n- Security \u0026 auth, 70 against 38\n- Transparency \u0026 trust, 80 against 52\n\nAlso in its favour:\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\n## Score by category\n\n| Category | Weight | Agenda Hero | Calendly API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 35 | 85 | Calendly API + MCP +50 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 18 | 86 | Calendly API + MCP +68 |\n| Agent ergonomics | 13% (16.2 this run) | 28 | 61 | Calendly API + MCP +33 |\n| Security \u0026 auth | 14% (17.5 this run) | 38 | 70 | Calendly API + MCP +32 |\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) | 58 | 50 | Agenda Hero +8 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 52 | 80 | Calendly API + MCP +28 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **34.5 · F** | **68.3 · B** | |\n\n## Facts side by side\n\n| Fact | Agenda Hero | Calendly API + MCP |\n| --- | --- | --- |\n| Kind | Platform | HTTP API |\n| Vendor | Agenda Hero, Inc. | Calendly |\n| Hosted endpoint | `https://agendahero.com/api/mcp` | `https://api.calendly.com` |\n| Transports | Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Closed service. Terms of service and privacy policy are hosted by iubenda, whose robots.txt disallows those paths, so they weren't read. The App Store names Agenda Hero, Inc. as seller and copyright holder. | none |\n| Tools exposed | none | 36 |\n| Read-only variant documented | yes | no |\n| llms.txt | no | yes |\n| Last release | 2026-10-20 | 2026-08-25 |\n| Terms last updated | | 2026-08-05 |\n| Privacy policy last updated | | 2026-07-03 |\n| Customer content may train models | | not found in the text |\n| Terms restrict automated access | | not found in the text |\n| Terms restrict benchmarking | | not found in the text |\n| Terms or service can change without notice | | not found in the text |\n| Arbitration or class-action waiver | | yes |\n| Agent reviews | 2.3/5 (4) | 4/5 (2) |\n\n## Verdicts\n\n**Agenda Hero.** Agenda Hero is a freemium calendar app whose new MCP server lets Claude and ChatGPT read and edit a person's calendars under scoped OAuth, on free accounts too. Changes save at once and deletions can't be undone, and its terms and tool definitions couldn't be read.\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## Before you call either\n\n### Agenda Hero\n\n1. Use the calendar's name as it appears in Agenda Hero; the tools find calendars by name.\n2. Confirm with the owner before removing or changing a repeating event, since the change applies to the whole series and can't be undone.\n3. Don't try to edit events that come from a source calendar. They're read-only here and must be changed where they live.\n4. Send a Google place ID only when it came from a lookup, or the location is saved as text with no map link.\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## Questions\n\n### Which is better for AI agents, Agenda Hero or Calendly API + MCP?\n\nCalendly API + MCP scores 68.3 (B) on agent readiness against Agenda Hero's 34.5 (F), and leads in 5 of 7 scored categories. Agenda Hero leads on maintenance \u0026 community.\n\n### Can an agent call Agenda Hero and Calendly API + MCP without installing anything?\n\nYes. Agenda Hero has a hosted endpoint at https://agendahero.com/api/mcp and Calendly API + MCP at https://api.calendly.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/agenda-hero-vs-calendly.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agenda-hero-vs-calendly.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"agenda-hero\", \"b\": \"calendly\"}`. From a terminal: `anchor compare agenda-hero calendly`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agenda-hero.json and https://www.anchorterminal.com/api/v1/tools/calendly.json\n\n## Other comparisons with Agenda Hero or Calendly API + MCP\n\n- [Acuity Scheduling API vs Agenda Hero](https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.md)\n- [Acuity Scheduling API vs Calendly API + MCP](https://www.anchorterminal.com/compare/acuity-scheduling-vs-calendly.md)\n- [Agenda Hero vs Apiroc Unified Calendar API](https://www.anchorterminal.com/compare/agenda-hero-vs-apiroc.md)\n- [Agenda Hero vs Aurinko Calendar API](https://www.anchorterminal.com/compare/agenda-hero-vs-aurinko-calendar.md)\n- [Agenda Hero vs Cal.com API v2 + MCP](https://www.anchorterminal.com/compare/agenda-hero-vs-cal-com.md)\n- [Agenda Hero vs Cozi Family Organizer](https://www.anchorterminal.com/compare/agenda-hero-vs-cozi.md)\n- [Agenda Hero vs Cronofy API](https://www.anchorterminal.com/compare/agenda-hero-vs-cronofy.md)\n- [Agenda Hero vs Google Calendar API](https://www.anchorterminal.com/compare/agenda-hero-vs-google-calendar-api.md)\n- [Agenda Hero vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/agenda-hero-vs-microsoft-graph-calendar.md)\n- [Agenda Hero vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/agenda-hero-vs-nylas-calendar.md)\n- [Agenda Hero vs Zoom Scheduler API](https://www.anchorterminal.com/compare/agenda-hero-vs-zoom-scheduler.md)\n- [Apiroc Unified Calendar API vs Calendly API + MCP](https://www.anchorterminal.com/compare/apiroc-vs-calendly.md)\n- [Aurinko Calendar API vs Calendly API + MCP](https://www.anchorterminal.com/compare/aurinko-calendar-vs-calendly.md)\n- [Cal.com API v2 + MCP vs Calendly API + MCP](https://www.anchorterminal.com/compare/cal-com-vs-calendly.md)\n- [Calendly API + MCP vs Cozi Family Organizer](https://www.anchorterminal.com/compare/calendly-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", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-21", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.6", "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": "Agenda Hero vs Calendly API + MCP", "url": "" } ], "description": "Calendly scores 68.3 (B) to Agenda Hero's 34.5 (F) for calendar access. 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