{ "data": { "a": { "slug": "acuity-scheduling", "name": "Acuity Scheduling API", "vendor": "Squarespace", "vendorUrl": "https://acuityscheduling.com", "kind": "http-api", "category": "scheduling", "summary": "Acuity Scheduling is Squarespace's appointment booking product. Its REST API reads availability, creates, reschedules and cancels appointments, manages clients and blocked time, and sends webhooks, with Basic authentication or OAuth2.", "url": "https://www.anchorterminal.com/tools/acuity-scheduling", "markdownUrl": "https://www.anchorterminal.com/tools/acuity-scheduling.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/acuity-scheduling.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/acuity-scheduling.json", "repo": "https://github.com/AcuityScheduling/acuity-js", "license": "Proprietary service under Squarespace's Developer Terms. The Node.js and PHP SDKs are MIT", "transports": [ "http" ], "remoteUrl": "https://acuityscheduling.com/api/v1", "packages": [ { "registry": "npm", "name": "acuityscheduling" } ], "auth": "mixed", "authNotes": "Self-serve. One account uses HTTP Basic authentication with the numeric User ID as username and the account API key as password, found under Integrations in the Acuity settings. Apps that connect other people's accounts register an OAuth2 client at https://acuityscheduling.com/oauth2/register and use the authorisation code grant, which has one scope, `api-v1`, and returns a Bearer token. `POST /oauth2/disconnect` disables a token. No app review step, token expiry or refresh token is described in the OAuth guide. Requests must come from a server, as cross-origin requests are refused.", "pricing": "paid", "pricingNotes": "The pricing page lists \"Custom API and CSS\" on the Premium plan only, at $61 a month or $49 a month billed yearly. Starter is $20 ($16 yearly) and Standard $34 ($27 yearly), in USD before tax. Each plan has a 7-day trial with no card needed. We did not establish whether the trial includes API access. No free tier or sandbox was found, and API calls carry no separate charge. An Enterprise plan with additional APIs is sold through sales (https://acuityscheduling.com/pricing).", "priceSummary": "$61 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs or on the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 9182, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developers.acuityscheduling.com", "llmsTxt": "https://developers.acuityscheduling.com/llms.txt", "capabilities": [ "calendar.read", "calendar.availability", "calendar.booking", "calendar.webhooks" ], "tags": [ "hosted", "paid", "trial", "rest", "oauth", "basic-auth", "webhooks", "llms-txt", "closed-source", "status-page", "hipaa", "nodejs", "php" ], "graded": true, "anchor": { "graded": true, "score": 42.4, "grade": "E", "agentReady": false, "rank": 1054, "ranked": true, "rankOf": 1197, "categoryRank": 9, "methodology": "0.6", "run": "2026-10-01", "scores": { "ergonomics": 44, "maintenance": 15, "payments": 30, "reliability": 58, "schema": 56, "security": 27, "transparency": 54 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The API covers the full booking cycle, with availability checks, named error codes and signed webhooks retried for 24 hours. API access is sold only on the Premium plan at $61 a month, the single OAuth scope grants the whole account, and no changelog, idempotency key or audit log was found in the reviewed documentation.", "bestFor": "A business that already takes bookings in Acuity and wants an agent to check slots, book, move and cancel appointments for clients, including classes, packages and intake forms.", "strengths": [ "Availability by date and time, booking, rescheduling and cancelling are separate documented endpoints under `/api/v1`", "Errors return a status code, a named `error` code and a message, and a 404 suggests the nearest valid path", "Webhooks are signed with HMAC-SHA256 in `x-acuity-signature` and retried nine times over 24 hours", "Every docs page has a Markdown copy with an OpenAPI 3.1 fragment, and `llms.txt` is published", "Rate limit stated as 10 requests a second and 20 concurrent connections per IP" ], "weaknesses": [ "The pricing page lists custom API access on Premium only, $61 a month or $49 billed yearly", "OAuth2 has one scope, `api-v1`, and Basic authentication uses one account API key, so no read-only credential exists", "No changelog or deprecation policy was found, and the Developer Terms allow changes without notice", "The Node.js and PHP SDKs were last released in July 2019", "The status page records two critical service disruptions in the last 90 days, on 19 July and 12 August 2026" ], "agentNotes": [ "Call `/availability/dates` then `/availability/times` with `appointmentTypeID` before `POST /appointments`, which validates the slot as a client would", "Avoid `admin=true` unless the owner asks for it, because it skips availability and form validation", "Pass `noEmail=true` when a booking or cancellation must not send the client an email or SMS", "Check `GET /appointments` filtered by `email` and date before retrying a booking, since no idempotency key is documented", "Stay under 10 requests a second and 20 concurrent connections per IP, and back off on 429, which carries no documented `Retry-After`" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.6", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 42.4 } ], "editorialScores": { "ergonomics": 44, "maintenance": 15, "payments": 30, "reliability": 58, "schema": 56, "security": 27, "transparency": 34 }, "provenanceScore": 74, "checked": { "categories": { "ergonomics": "2026-10-08", "maintenance": "2026-10-08", "payments": "2026-10-08", "reliability": "2026-10-08", "schema": "2026-10-08", "security": "2026-10-08", "transparency": "2026-10-08" }, "last": "2026-10-08", "oldest": "2026-10-08", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install --save acuityscheduling", "http": "curl -u ACUITY_USER_ID:ACUITY_API_KEY \"https://acuityscheduling.com/api/v1/appointments\"" }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/acuity-scheduling" }, "area": "everyday", "unitPrices": [ { "item": "Premium (the plan with API access)", "unit": "month", "usd": 61, "note": "Monthly billing. $49 a month billed yearly" } ], "provenance": { "legalEntity": "Squarespace, Inc.", "domain": "acuityscheduling.com", "domainRegistered": "2007-01-15", "endpointOnVendorDomain": true, "terms": "https://www.squarespace.com/developer-terms", "privacy": "https://www.squarespace.com/privacy", "statusPage": "https://status.acuityscheduling.com", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The developer docs' legal page links two documents, Squarespace's Developer Terms (last updated 16 December 2025) and Squarespace's privacy policy (effective 15 July 2026). Both name acuityscheduling.com.", "The contracting entity is Squarespace, Inc., 225 Varick Street, New York, for US users and Squarespace Ireland Limited, Dublin, for others.", "acuityscheduling.com/.well-known/security.txt returns 404. www.squarespace.com publishes one that expires on 1 January 2028 and points to its vulnerability reporting page.", "The API answers at https://acuityscheduling.com/api/v1 and OAuth at https://acuityscheduling.com/oauth2.", "RDAP gives a registration date of 2007-01-15 and MarkMonitor Inc. as registrar.", "No changelog was found. developers.acuityscheduling.com/changelog.md returns the docs' not-found page." ], "score": 74 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/acuity-scheduling.json", "live": { "slug": "acuity-scheduling", "probe": { "target": "https://acuityscheduling.com/api/v1", "method": "get", "lastAt": "2026-10-21T23:10:41.424274963Z", "lastOk": true, "lastStatus": 404, "lastMs": 471, "authRequired": false, "uptime24h": 86, "uptime30d": 98.94, "p50ms24h": 475, "p95ms24h": 537, "samples24h": 250, "samples30d": 3304, "days": [ { "date": "2026-10-08", "probes": 50, "ok": 50 }, { "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": 245, "ok": 210 } ], "outages": [ { "start": "2026-10-21T13:56:25.331686093Z", "end": "2026-10-21T17:02:44.771636572Z", "note": "HTTP 503 server error" } ] }, "vendorStatus": { "page": "https://status.acuityscheduling.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-21T22:59:42.889853522Z" }, "versions": [ { "registry": "npm", "name": "acuityscheduling", "version": "0.1.9", "seenAt": "2026-10-21T05:35:47.744275536Z" } ], "githubStars": 37, "npmWeekly": 2838, "securityTxt": { "url": "https://acuityscheduling.com/.well-known/security.txt", "state": "unknown", "checkedAt": "2026-10-21T15:59:28.692923197Z" }, "llmsTxt": { "url": "https://developers.acuityscheduling.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-21T14:32:40.354841359Z" }, "domain": { "domain": "acuityscheduling.com", "registered": "2007-01-15", "source": "https://rdap.verisign.com/com/v1/domain/acuityscheduling.com", "checkedAt": "2026-10-18T13:39:33.36676228Z" }, "pages": [ { "url": "https://acuityscheduling.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-21T00:41:14.20472662Z", "changedAt": "2026-10-14T20:34:38.321757155Z", "fingerprint": "f06a7932ca32" }, { "url": "https://www.squarespace.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-21T01:07:13.121021389Z", "changedAt": "2026-10-16T22:41:51.108234956Z", "fingerprint": "c6047474ed09" }, { "url": "https://www.squarespace.com/developer-terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-21T01:07:10.767763704Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d24e153bb1e1" } ], "github": { "repo": "acuityscheduling/acuity-js", "checkedAt": "2026-10-19T05:49:56.840491988Z", "stars": 36, "archived": false, "issuesEnabled": true, "pushedAt": "2019-08-16T08:52:10Z", "openIssues": 1, "openPRs": 0, "issuesOpened90d": 0, "issuesClosed90d": 0, "prsMerged90d": 0, "replies": { "sampled": 9, "unanswered": 1, "medianDays": 4.4 } }, "updatedAt": "2026-10-21T23:10:41.424274963Z" } }, "answer": "Acuity Scheduling API scores 42.4 (E) on agent readiness against Agenda Hero's 34.5 (F), and leads in 4 of 7 scored categories. Agenda Hero leads on security \u0026 auth and maintenance \u0026 community.", "b": { "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": "2026-10-21T23:10:41.582473174Z", "lastOk": true, "lastStatus": 401, "lastMs": 258, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 291, "p95ms24h": 428, "samples24h": 35, "samples30d": 35, "days": [ { "date": "2026-10-21", "probes": 35, "ok": 35 } ] }, "vendorStatus": { "page": "https://status.agendahero.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-21T22:24:59.784539001Z" }, "updatedAt": "2026-10-21T23:10:41.582473174Z" } }, "facts": [ { "a": "HTTP API", "b": "Platform", "name": "Kind" }, { "a": "Squarespace", "b": "Agenda Hero, Inc.", "name": "Vendor" }, { "a": "https://acuityscheduling.com/api/v1", "b": "https://agendahero.com/api/mcp", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth", "name": "Auth" }, { "a": "Paid", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Squarespace's Developer Terms. The Node.js and PHP SDKs are MIT", "b": "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.", "name": "Licence" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "none", "b": "2026-10-20", "name": "Last release" }, { "a": "2025-12-16", "b": "", "name": "Terms last updated" }, { "a": "no date given", "b": "", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "", "name": "Terms restrict automated access" }, { "a": "yes", "b": "", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "9.2k npm/wk", "b": "none", "name": "Popularity" }, { "a": "2.5/5 (4)", "b": "2.3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Acuity Scheduling API scores 42.4 (E) on agent readiness against Agenda Hero's 34.5 (F), and leads in 4 of 7 scored categories. Agenda Hero leads on security \u0026 auth and maintenance \u0026 community.", "question": "Which is better for AI agents, Acuity Scheduling API or Agenda Hero?" }, { "answer": "Yes. Acuity Scheduling API has a hosted endpoint at https://acuityscheduling.com/api/v1 and Agenda Hero at https://agendahero.com/api/mcp.", "question": "Can an agent call Acuity Scheduling API and Agenda Hero without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 58 against 35", "Schema \u0026 documentation, 56 against 18", "Agent ergonomics, 44 against 28" ], "also": null, "goodFor": "A business that already takes bookings in Acuity and wants an agent to check slots, book, move and cancel appointments for clients, including classes, packages and intake forms.", "slug": "acuity-scheduling", "watchFor": "The pricing page lists custom API access on Premium only, $61 a month or $49 billed yearly" }, { "aheadOn": [ "Security \u0026 auth, 38 against 27", "Maintenance \u0026 community, 58 against 15" ], "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." } ], "job": { "capability": "calendar.read", "name": "Calendar access" }, "others": [ { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-apiroc.json", "title": "Acuity Scheduling API vs Apiroc Unified Calendar API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-apiroc" }, { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-aurinko-calendar.json", "title": "Acuity Scheduling API vs Aurinko Calendar API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-aurinko-calendar" }, { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-cal-com.json", "title": "Acuity Scheduling API vs Cal.com API v2 + MCP", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-cal-com" }, { "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/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-google-calendar-api.json", "title": "Acuity Scheduling API vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-google-calendar-api" }, { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-microsoft-graph-calendar.json", "title": "Acuity Scheduling API vs Microsoft Graph Calendar API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-microsoft-graph-calendar" }, { "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-nylas-calendar.json", "title": "Acuity Scheduling API vs Nylas Calendar and Scheduler API", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-nylas-calendar" }, { "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/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-calendly.json", "title": "Agenda Hero vs Calendly API + MCP", "url": "https://www.anchorterminal.com/compare/agenda-hero-vs-calendly" }, { "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" } ], "scores": [ { "acuity-scheduling": 58, "agenda-hero": 35, "by": 23, "edge": "acuity-scheduling", "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "acuity-scheduling": 56, "agenda-hero": 18, "by": 38, "edge": "acuity-scheduling", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "acuity-scheduling": 44, "agenda-hero": 28, "by": 16, "edge": "acuity-scheduling", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "acuity-scheduling": 27, "agenda-hero": 38, "by": 11, "edge": "agenda-hero", "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "acuity-scheduling": 30, "agenda-hero": 30, "by": 0, "edge": "", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "acuity-scheduling": 15, "agenda-hero": 58, "by": 43, "edge": "agenda-hero", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "acuity-scheduling": 54, "agenda-hero": 52, "by": 2, "edge": "acuity-scheduling", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Acuity Scheduling API scores 42.4 (E) on agent readiness against Agenda Hero's 34.5 (F), and leads in 4 of 7 scored categories. Agenda Hero leads on security \u0026 auth and maintenance \u0026 community. Both do calendar access.", "tutorials": [], "verdicts": { "acuity-scheduling": "The API covers the full booking cycle, with availability checks, named error codes and signed webhooks retried for 24 hours. API access is sold only on the Premium plan at $61 a month, the single OAuth scope grants the whole account, and no changelog, idempotency key or audit log was found in the reviewed documentation.", "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero", "json": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.min.md" }, "markdown": "Acuity Scheduling API scores 42.4 (E) on agent readiness against Agenda Hero's 34.5 (F), and leads in 4 of 7 scored categories. Agenda Hero leads on security \u0026 auth and maintenance \u0026 community. Both do calendar access.\n\n- Acuity Scheduling API: grade E, 42.4/100, rank #1054 of 1197. Markdown https://www.anchorterminal.com/tools/acuity-scheduling.md · JSON https://www.anchorterminal.com/api/v1/tools/acuity-scheduling.json\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- 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### Acuity Scheduling API (E)\n\nGood for: A business that already takes bookings in Acuity and wants an agent to check slots, book, move and cancel appointments for clients, including classes, packages and intake forms.\n\nAhead on:\n- Reliability, 58 against 35\n- Schema \u0026 documentation, 56 against 18\n- Agent ergonomics, 44 against 28\n\nWatch for: The pricing page lists custom API access on Premium only, $61 a month or $49 billed yearly\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- Security \u0026 auth, 38 against 27\n- Maintenance \u0026 community, 58 against 15\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\n## Score by category\n\n| Category | Weight | Acuity Scheduling API | Agenda Hero | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 58 | 35 | Acuity Scheduling API +23 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 56 | 18 | Acuity Scheduling API +38 |\n| Agent ergonomics | 13% (16.2 this run) | 44 | 28 | Acuity Scheduling API +16 |\n| Security \u0026 auth | 14% (17.5 this run) | 27 | 38 | Agenda Hero +11 |\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) | 15 | 58 | Agenda Hero +43 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 54 | 52 | Acuity Scheduling API +2 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **42.4 · E** | **34.5 · F** | |\n\n## Facts side by side\n\n| Fact | Acuity Scheduling API | Agenda Hero |\n| --- | --- | --- |\n| Kind | HTTP API | Platform |\n| Vendor | Squarespace | Agenda Hero, Inc. |\n| Hosted endpoint | `https://acuityscheduling.com/api/v1` | `https://agendahero.com/api/mcp` |\n| Transports | HTTP | Streamable HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Paid | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under Squarespace's Developer Terms. The Node.js and PHP SDKs are MIT | 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. |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | no |\n| Last release | none | 2026-10-20 |\n| Terms last updated | 2025-12-16 | |\n| Privacy policy last updated | no date given | |\n| Customer content may train models | not found in the text | |\n| Terms restrict automated access | not found in the text | |\n| Terms restrict benchmarking | yes | |\n| Terms or service can change without notice | yes | |\n| Arbitration or class-action waiver | yes | |\n| Popularity | 9.2k npm/wk | none |\n| Agent reviews | 2.5/5 (4) | 2.3/5 (4) |\n\n## Verdicts\n\n**Acuity Scheduling API.** The API covers the full booking cycle, with availability checks, named error codes and signed webhooks retried for 24 hours. API access is sold only on the Premium plan at $61 a month, the single OAuth scope grants the whole account, and no changelog, idempotency key or audit log was found in the reviewed documentation.\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## Before you call either\n\n### Acuity Scheduling API\n\n1. Call `/availability/dates` then `/availability/times` with `appointmentTypeID` before `POST /appointments`, which validates the slot as a client would\n2. Avoid `admin=true` unless the owner asks for it, because it skips availability and form validation\n3. Pass `noEmail=true` when a booking or cancellation must not send the client an email or SMS\n4. Check `GET /appointments` filtered by `email` and date before retrying a booking, since no idempotency key is documented\n5. Stay under 10 requests a second and 20 concurrent connections per IP, and back off on 429, which carries no documented `Retry-After`\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## Questions\n\n### Which is better for AI agents, Acuity Scheduling API or Agenda Hero?\n\nAcuity Scheduling API scores 42.4 (E) on agent readiness against Agenda Hero's 34.5 (F), and leads in 4 of 7 scored categories. Agenda Hero leads on security \u0026 auth and maintenance \u0026 community.\n\n### Can an agent call Acuity Scheduling API and Agenda Hero without installing anything?\n\nYes. Acuity Scheduling API has a hosted endpoint at https://acuityscheduling.com/api/v1 and Agenda Hero at https://agendahero.com/api/mcp.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.json, and with the fewest tokens: https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"acuity-scheduling\", \"b\": \"agenda-hero\"}`. From a terminal: `anchor compare acuity-scheduling agenda-hero`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/acuity-scheduling.json and https://www.anchorterminal.com/api/v1/tools/agenda-hero.json\n\n## Other comparisons with Acuity Scheduling API or Agenda Hero\n\n- [Acuity Scheduling API vs Apiroc Unified Calendar API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-apiroc.md)\n- [Acuity Scheduling API vs Aurinko Calendar API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-aurinko-calendar.md)\n- [Acuity Scheduling API vs Cal.com API v2 + MCP](https://www.anchorterminal.com/compare/acuity-scheduling-vs-cal-com.md)\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- [Acuity Scheduling API vs Cronofy API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-cronofy.md)\n- [Acuity Scheduling API vs Google Calendar API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-google-calendar-api.md)\n- [Acuity Scheduling API vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-microsoft-graph-calendar.md)\n- [Acuity Scheduling API vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-nylas-calendar.md)\n- [Acuity Scheduling API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-zoom-scheduler.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 Calendly API + MCP](https://www.anchorterminal.com/compare/agenda-hero-vs-calendly.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", "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": "Acuity Scheduling API vs Agenda Hero", "url": "" } ], "description": "Acuity Scheduling scores 42.4 (E) to Agenda Hero's 34.5 (F) for calendar access. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Acuity Scheduling API E 42.4", "Agenda Hero F 34.5", "scores" ], "h1": "Acuity Scheduling API vs Agenda Hero", "image": "https://www.anchorterminal.com/assets/og/compare-acuity-scheduling-vs-agenda-hero.png", "path": "/compare/acuity-scheduling-vs-agenda-hero", "published": "2026-10-01", "section": "tools", "title": "Acuity Scheduling vs Agenda Hero for AI agents (2026)", "toc": null, "updated": "2026-10-21", "url": "https://www.anchorterminal.com/compare/acuity-scheduling-vs-agenda-hero" }, "tokens": { "markdown": 2450, "slim": 780 }, "version": 1 }