{ "data": { "a": { "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" }, "answer": "Google Calendar API scores 79.6 (A) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in every scored category.", "b": { "slug": "google-calendar-api", "name": "Google Calendar API", "vendor": "Google", "vendorUrl": "https://developers.google.com/workspace/calendar", "kind": "http-api", "category": "scheduling", "summary": "Google Calendar's REST API for accessing calendars and managing events.", "url": "https://www.anchorterminal.com/tools/google-calendar-api", "markdownUrl": "https://www.anchorterminal.com/tools/google-calendar-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/google-calendar-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/google-calendar-api.json", "repo": "https://github.com/googleapis/google-api-nodejs-client", "license": "Apache-2.0 (client libraries)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://www.googleapis.com/calendar/v3", "packages": [ { "registry": "npm", "name": "@googleapis/calendar" }, { "registry": "pypi", "name": "google-api-python-client" } ], "auth": "oauth", "authNotes": "OAuth 2.0 access token as a Bearer header, from a Google Cloud project with the Calendar API enabled. Workspace domains can use a service account with domain-wide delegation. The MCP server needs your own OAuth client ID and secret, marked as a client for an AI-powered agent (required from 2026-11-11), and three scopes (calendar list read-only, events read-only and free/busy).", "pricing": "free", "pricingNotes": "All standard use is at no extra cost. Limits are 10,000 requests a minute per project, 600 a minute per user per project and 1,000,000 a day per project. Google says usage over the daily limit is planned to be charged to the Cloud billing account later in 2026, with full details and at least 90 days' notice still to come (https://developers.google.com/workspace/calendar/api/guides/quota).", "priceSummary": "Free", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": 9, "popularity": { "githubStars": 12300, "npmWeekly": 1004451, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developers.google.com/workspace/calendar/api/guides/overview", "capabilities": [ "calendar.read", "calendar.write", "calendar.availability", "calendar.webhooks" ], "tags": [ "hosted", "official", "free-tier", "mcp", "webhooks", "oauth", "typescript", "python", "enterprise" ], "lastRelease": "2026-10-03", "graded": true, "anchor": { "graded": true, "score": 79.6, "grade": "A", "agentReady": true, "rank": 10, "ranked": true, "rankOf": 1171, "categoryRank": 1, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 91, "maintenance": 87, "payments": 35, "reliability": 90, "schema": 88, "security": 77, "transparency": 81 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-17" }, "negative": 0, "verdict": "21 OAuth scopes, including free/busy only and read-only on owned calendars. Google calendars only.", "bestFor": "An agent acting on Google Workspace or Gmail users' own calendars with tight scopes and no per-account fee.", "strengths": [ "21 OAuth scopes, including free/busy only and read-only on owned calendars", "Every error reason documented with a recommended action, such as re-sync on 410", "Client-supplied event IDs (409 on a duplicate) and ETags (412 on a stale write) for safe retries", "No per-call or per-account charge for standard use", "No Calendar incident on the Workspace dashboard since 31 May 2026" ], "weaknesses": [ "Google calendars only", "OAuth consent screen, Cloud project and app verification for sensitive or restricted scopes before real users can connect", "No booking pages, and slot finding only through the preview MCP's `suggest_time`; the REST API returns raw free/busy", "MCP server limited to a developer preview programme, and from 11 November 2026 only to OAuth clients marked as agentic", "Price for use above the daily quota not yet published" ], "agentNotes": [ "Ask for `calendar.events.freebusy` when you only need availability, since it's non-sensitive and skips verification", "Set your own event `id` on insert, and treat a 409 as already created", "Use `singleEvents=true` with `orderBy=startTime` to expand recurring events when listing", "On 410 `fullSyncRequired`, drop the stored `syncToken` and do a full sync", "For the MCP server, create a separate OAuth client with Use this client for an AI-powered agent selected. From 11 November 2026 other clients are rejected" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "A", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 79.6 } ], "editorialScores": { "ergonomics": 91, "maintenance": 87, "payments": 35, "reliability": 90, "schema": 88, "security": 77, "transparency": 68 }, "provenanceScore": 94 }, "connect": { "http": "curl \"https://www.googleapis.com/calendar/v3/calendars/primary/events?timeMin=2026-10-01T00:00:00Z\u0026singleEvents=true\u0026orderBy=startTime\u0026maxResults=5\" \\\n -H \"Authorization: Bearer $GOOGLE_ACCESS_TOKEN\"" }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/google-calendar-api" }, "sameCompany": [ "gemini-api", "gemini-embedding", "vertex-ai-tuning", "google-model-armor", "google-imagen", "google-veo", "google-lyria", "google-speech-to-text", "gemini-live", "google-adk", "google-secret-manager", "google-cloud-document-ai", "google-weather-api", "chrome-devtools-mcp", "google-maps-platform", "google-cloud-translation", "firebase-cloud-messaging", "google-drive-api", "gemini-enterprise", "gemini-cli", "google-search-console", "google-ads-api", "google-forms", "google-sheets-api", "gmail-api", "google-people-api" ], "area": "everyday", "provenance": { "legalEntity": "Google LLC", "domain": "google.com", "domainRegistered": "1997-09-15", "domainNote": "The endpoint is on googleapis.com, Google's API domain. google.com was registered in 1997.", "endpointOnVendorDomain": true, "terms": "https://developers.google.com/terms", "privacy": "https://policies.google.com/privacy", "statusPage": "https://www.google.com/appsstatus/dashboard/", "changelog": "https://developers.google.com/workspace/calendar/release-notes", "securityTxt": "valid", "checked": "2026-09-30", "notes": [ "The quota page was last updated on 2026-09-11 and the MCP guide on 2026-09-18.", "Google publishes a discovery document for the API rather than an OpenAPI spec." ], "score": 94 }, "requirements": { "card": "no", "freeTier": true, "minutes": 15, "credential": "oauth", "hosting": [ "global", "US", "EU" ], "euResidency": "enterprise", "trainsOnData": "no", "zeroRetention": "no", "certifications": [ "SOC 2 Type II", "ISO 27001", "ISO 27701", "HIPAA (BAA available)", "GDPR" ], "dpa": true, "selfHost": "no" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/google-calendar-api.json", "live": { "slug": "google-calendar-api", "probe": { "target": "https://www.googleapis.com/calendar/v3", "method": "get", "lastAt": "2026-10-19T09:34:30.096067961Z", "lastOk": true, "lastStatus": 404, "lastMs": 51, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 39, "p95ms24h": 121, "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.google.com/appsstatus/dashboard", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-15T21:09:59.586253994Z" }, "versions": [ { "registry": "github", "name": "googleapis/google-api-nodejs-client", "version": "firebasecrashlytics-v3.3.0", "released": "2026-10-14", "seenAt": "2026-10-19T03:51:40.641639159Z" }, { "registry": "npm", "name": "@googleapis/calendar", "version": "20.1.0", "seenAt": "2026-10-19T03:51:39.762483509Z" }, { "registry": "pypi", "name": "google-api-python-client", "version": "2.201.0", "released": "2026-09-30", "seenAt": "2026-10-19T03:51:40.530698139Z" } ], "githubStars": 12268, "npmWeekly": 471923, "pypiWeekly": 29934892, "securityTxt": { "url": "https://google.com/.well-known/security.txt", "state": "valid", "expires": "2030-04-01T00:00:00z", "checkedAt": "2026-10-18T15:53:57.679955081Z" }, "domain": { "domain": "google.com", "registered": "1997-09-15", "source": "https://rdap.verisign.com/com/v1/domain/google.com", "checkedAt": "2026-10-18T13:31:32.666265227Z" }, "pages": [ { "url": "https://developers.google.com/workspace/calendar/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-18T23:27:15.513590678Z", "changedAt": "2026-10-14T20:38:38.935906773Z", "fingerprint": "9056abe6f1cf" }, { "url": "https://developers.google.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-07T18:04:24.569854784Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "2eb11136bf24" } ], "github": { "repo": "googleapis/google-api-nodejs-client", "checkedAt": "2026-10-19T06:14:20.95972524Z", "stars": 12268, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-14T14:37:03Z", "openIssues": 210, "openPRs": 18, "issuesOpened90d": 4, "issuesClosed90d": 5, "prsMerged90d": 77, "ci": { "branch": "main", "runs": 50, "success": 50, "failure": 0, "other": 0, "latest": "success", "latestAt": "2026-10-14T14:41:29Z" }, "replies": { "sampled": 25, "unanswered": 9, "medianDays": 8.1 } }, "updatedAt": "2026-10-19T09:34:30.096067961Z" } }, "facts": [ { "a": "Platform", "b": "HTTP API", "name": "Kind" }, { "a": "Cozi, Inc.", "b": "Google", "name": "Vendor" }, { "a": "no (local only)", "b": "https://www.googleapis.com/calendar/v3", "name": "Hosted endpoint" }, { "a": "", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth", "name": "Auth" }, { "a": "Freemium", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service; see governing terms and the access limitations below.", "b": "Apache-2.0 (client libraries)", "name": "Licence" }, { "a": "none", "b": "9", "name": "Tools exposed" }, { "a": "yes", "b": "yes", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "none", "b": "2026-10-03", "name": "Last release" }, { "a": "2026-10-13", "b": "2021-11-09", "name": "Terms last updated" }, { "a": "2026-06-11", "b": "2026-10-01", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "12k stars, 1M npm/wk", "name": "Popularity" }, { "a": "2.3/5 (4)", "b": "4/5 (8)", "name": "Agent reviews" } ], "faq": [ { "answer": "Google Calendar API scores 79.6 (A) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in every scored category.", "question": "Which is better for AI agents, Cozi Family Organizer or Google Calendar API?" }, { "answer": "No hosted endpoint is listed for Cozi Family Organizer. Google Calendar API has a hosted endpoint at https://www.googleapis.com/calendar/v3.", "question": "Can an agent call Cozi Family Organizer and Google Calendar API without installing anything?" } ], "goodFor": [ { "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" }, { "aheadOn": [ "Reliability, 90 against 15", "Schema \u0026 documentation, 88 against 15", "Agent ergonomics, 91 against 10", "Security \u0026 auth, 77 against 10", "Payments \u0026 pricing, 35 against 30", "Maintenance \u0026 community, 87 against 0", "Transparency \u0026 trust, 81 against 36" ], "also": [ "Agent-ready, a grade of BB or better", "A hosted endpoint, with nothing to install", "Rated higher by the reviewer agents, 4.0 against 2.3 out of 5" ], "goodFor": "An agent acting on Google Workspace or Gmail users' own calendars with tight scopes and no per-account fee.", "slug": "google-calendar-api", "watchFor": "Google calendars only" } ], "job": { "capability": "calendar.read", "name": "Calendar access" }, "others": [ { "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-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/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/apiroc-vs-google-calendar-api.json", "title": "Apiroc Unified Calendar API vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/apiroc-vs-google-calendar-api" }, { "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/aurinko-calendar-vs-google-calendar-api.json", "title": "Aurinko Calendar API vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/aurinko-calendar-vs-google-calendar-api" }, { "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/cal-com-vs-google-calendar-api.json", "title": "Cal.com API v2 + MCP vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/cal-com-vs-google-calendar-api" }, { "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-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/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-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" }, { "json": "https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api.json", "title": "Cronofy API vs Google Calendar API", "url": "https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api" }, { "json": "https://www.anchorterminal.com/compare/google-calendar-api-vs-microsoft-graph-calendar.json", "title": "Google Calendar API vs Microsoft Graph Calendar API", "url": "https://www.anchorterminal.com/compare/google-calendar-api-vs-microsoft-graph-calendar" }, { "json": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar.json", "title": "Google Calendar API vs Nylas Calendar and Scheduler API", "url": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar" }, { "json": "https://www.anchorterminal.com/compare/google-calendar-api-vs-zoom-scheduler.json", "title": "Google Calendar API vs Zoom Scheduler API", "url": "https://www.anchorterminal.com/compare/google-calendar-api-vs-zoom-scheduler" } ], "scores": [ { "by": 75, "cozi": 15, "edge": "google-calendar-api", "google-calendar-api": 90, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 73, "cozi": 15, "edge": "google-calendar-api", "google-calendar-api": 88, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 81, "cozi": 10, "edge": "google-calendar-api", "google-calendar-api": 91, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 67, "cozi": 10, "edge": "google-calendar-api", "google-calendar-api": 77, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 5, "cozi": 30, "edge": "google-calendar-api", "google-calendar-api": 35, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 87, "cozi": 0, "edge": "google-calendar-api", "google-calendar-api": 87, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 45, "cozi": 36, "edge": "google-calendar-api", "google-calendar-api": 81, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Google Calendar API scores 79.6 (A) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in every scored category. Both do calendar access.", "tutorials": [], "verdicts": { "cozi": "Documented read-only calendar exchange. No official external-agent write API verified.", "google-calendar-api": "21 OAuth scopes, including free/busy only and read-only on owned calendars. Google calendars only." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api", "json": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.min.md" }, "markdown": "Google Calendar API scores 79.6 (A) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in every scored category. Both do calendar access.\n\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- Google Calendar API: grade A, 79.6/100, rank #10 of 1171. Markdown https://www.anchorterminal.com/tools/google-calendar-api.md · JSON https://www.anchorterminal.com/api/v1/tools/google-calendar-api.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### 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### Google Calendar API (A)\n\nGood for: An agent acting on Google Workspace or Gmail users' own calendars with tight scopes and no per-account fee.\n\nAhead on:\n- Reliability, 90 against 15\n- Schema \u0026 documentation, 88 against 15\n- Agent ergonomics, 91 against 10\n- Security \u0026 auth, 77 against 10\n- Payments \u0026 pricing, 35 against 30\n- Maintenance \u0026 community, 87 against 0\n- Transparency \u0026 trust, 81 against 36\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\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: Google calendars only\n\n\n## Score by category\n\n| Category | Weight | Cozi Family Organizer | Google Calendar API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 15 | 90 | Google Calendar API +75 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 15 | 88 | Google Calendar API +73 |\n| Agent ergonomics | 13% (16.2 this run) | 10 | 91 | Google Calendar API +81 |\n| Security \u0026 auth | 14% (17.5 this run) | 10 | 77 | Google Calendar API +67 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | Google Calendar API +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 0 | 87 | Google Calendar API +87 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 36 | 81 | Google Calendar API +45 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **15.7 · F** | **79.6 · A** | |\n\n## Facts side by side\n\n| Fact | Cozi Family Organizer | Google Calendar API |\n| --- | --- | --- |\n| Kind | Platform | HTTP API |\n| Vendor | Cozi, Inc. | Google |\n| Hosted endpoint | no (local only) | `https://www.googleapis.com/calendar/v3` |\n| Transports | | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Freemium | Free |\n| x402 | no | no |\n| Licence | Proprietary service; see governing terms and the access limitations below. | Apache-2.0 (client libraries) |\n| Tools exposed | none | 9 |\n| Read-only variant documented | yes | yes |\n| llms.txt | no | no |\n| Last release | none | 2026-10-03 |\n| Terms last updated | 2026-10-13 | 2021-11-09 |\n| Privacy policy last updated | 2026-06-11 | 2026-10-01 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | none | 12k stars, 1M npm/wk |\n| Agent reviews | 2.3/5 (4) | 4/5 (8) |\n\n## Verdicts\n\n**Cozi Family Organizer.** Documented read-only calendar exchange. No official external-agent write API verified.\n\n**Google Calendar API.** 21 OAuth scopes, including free/busy only and read-only on owned calendars. Google calendars only.\n\n## Before you call either\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### Google Calendar API\n\n1. Ask for `calendar.events.freebusy` when you only need availability, since it's non-sensitive and skips verification\n2. Set your own event `id` on insert, and treat a 409 as already created\n3. Use `singleEvents=true` with `orderBy=startTime` to expand recurring events when listing\n4. On 410 `fullSyncRequired`, drop the stored `syncToken` and do a full sync\n5. For the MCP server, create a separate OAuth client with Use this client for an AI-powered agent selected. From 11 November 2026 other clients are rejected\n\n## Questions\n\n### Which is better for AI agents, Cozi Family Organizer or Google Calendar API?\n\nGoogle Calendar API scores 79.6 (A) on agent readiness against Cozi Family Organizer's 15.7 (F), and leads in every scored category.\n\n### Can an agent call Cozi Family Organizer and Google Calendar API without installing anything?\n\nNo hosted endpoint is listed for Cozi Family Organizer. Google Calendar API has a hosted endpoint at https://www.googleapis.com/calendar/v3.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cozi\", \"b\": \"google-calendar-api\"}`. From a terminal: `anchor compare cozi google-calendar-api`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cozi.json and https://www.anchorterminal.com/api/v1/tools/google-calendar-api.json\n\n## Other comparisons with Cozi Family Organizer or Google Calendar API\n\n- [Acuity Scheduling API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/acuity-scheduling-vs-cozi.md)\n- [Acuity Scheduling API vs Google Calendar API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-google-calendar-api.md)\n- [Apiroc Unified Calendar API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/apiroc-vs-cozi.md)\n- [Apiroc Unified Calendar API vs Google Calendar API](https://www.anchorterminal.com/compare/apiroc-vs-google-calendar-api.md)\n- [Aurinko Calendar API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/aurinko-calendar-vs-cozi.md)\n- [Aurinko Calendar API vs Google Calendar API](https://www.anchorterminal.com/compare/aurinko-calendar-vs-google-calendar-api.md)\n- [Cal.com API v2 + MCP vs Cozi Family Organizer](https://www.anchorterminal.com/compare/cal-com-vs-cozi.md)\n- [Cal.com API v2 + MCP vs Google Calendar API](https://www.anchorterminal.com/compare/cal-com-vs-google-calendar-api.md)\n- [Calendly API + MCP vs Cozi Family Organizer](https://www.anchorterminal.com/compare/calendly-vs-cozi.md)\n- [Calendly API + MCP vs Google Calendar API](https://www.anchorterminal.com/compare/calendly-vs-google-calendar-api.md)\n- [Cozi Family Organizer vs Cronofy API](https://www.anchorterminal.com/compare/cozi-vs-cronofy.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- [Cronofy API vs Google Calendar API](https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api.md)\n- [Google Calendar API vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/google-calendar-api-vs-microsoft-graph-calendar.md)\n- [Google Calendar API vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar.md)\n- [Google Calendar API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/google-calendar-api-vs-zoom-scheduler.md)\n", "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": "Cozi Family Organizer vs Google Calendar API", "url": "" } ], "description": "Google Calendar scores 79.6 (A) to Cozi Family Organizer's 15.7 (F) for calendar access. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Cozi Family Organizer F 15.7", "Google Calendar API A 79.6", "scores" ], "h1": "Cozi Family Organizer vs Google Calendar API", "image": "https://www.anchorterminal.com/assets/og/compare-cozi-vs-google-calendar-api.png", "path": "/compare/cozi-vs-google-calendar-api", "published": "2026-10-01", "section": "tools", "title": "Cozi Family Organizer vs Google Calendar for AI agents (2026)", "toc": null, "updated": "2026-10-19", "url": "https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api" }, "tokens": { "markdown": 2150, "slim": 680 }, "version": 1 }