{ "data": { "a": { "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 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": "2026-09-24", "graded": true, "anchor": { "graded": true, "score": 79.5, "grade": "A", "agentReady": true, "rank": 8, "ranked": true, "rankOf": 452, "categoryRank": 1, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 91, "maintenance": 87, "payments": 35, "reliability": 90, "schema": 83, "security": 82, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "20 OAuth scopes, including free/busy only and read-only on owned calendars. Google calendars only.", "strengths": [ "20 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 restricted scopes before real users can connect", "No slot finding or booking pages, only raw free/busy", "MCP server limited to a developer preview programme", "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", "Back off exponentially on 403 and 429 `usageLimits`, up to 32 or 64 seconds" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "A", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 79.5 } ], "editorialScores": { "ergonomics": 91, "maintenance": 87, "payments": 35, "reliability": 90, "schema": 83, "security": 82, "transparency": 58 }, "provenanceScore": 100 }, "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", "google-adk", "google-secret-manager", "google-weather-api", "chrome-devtools-mcp", "google-maps-platform", "google-cloud-translation", "google-drive-api", "gemini-cli" ], "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": 100 }, "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": "2026-10-04T23:32:47.880773823Z", "lastOk": true, "lastStatus": 404, "lastMs": 31, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 36, "p95ms24h": 80, "samples24h": 272, "samples30d": 895, "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": 267, "ok": 267 } ] }, "vendorStatus": { "page": "https://www.google.com/appsstatus/dashboard", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:40:05.839638971Z" }, "versions": [ { "registry": "github", "name": "googleapis/google-api-nodejs-client", "version": "agentidentity-v3.1.0", "released": "2026-10-03", "seenAt": "2026-10-04T16:28:25.755514591Z" }, { "registry": "npm", "name": "@googleapis/calendar", "version": "20.1.0", "seenAt": "2026-10-04T16:28:24.425409062Z" }, { "registry": "pypi", "name": "google-api-python-client", "version": "2.201.0", "released": "2026-09-30", "seenAt": "2026-10-04T16:28:25.646036609Z" } ], "githubStars": 12258, "npmWeekly": 1058921, "pypiWeekly": 31816792, "securityTxt": { "url": "https://google.com/.well-known/security.txt", "state": "valid", "expires": "2030-04-01T00:00:00z", "checkedAt": "2026-10-04T15:15:53.387118101Z" }, "domain": { "domain": "google.com", "registered": "1997-09-15", "source": "https://rdap.verisign.com/com/v1/domain/google.com", "checkedAt": "2026-10-04T13:05:50.737985829Z" }, "pages": [ { "url": "https://developers.google.com/workspace/calendar/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:42:59.473216224Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d44adc97348c" }, { "url": "https://developers.google.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:42:57.429090902Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "2eb11136bf24" } ], "updatedAt": "2026-10-04T23:32:47.880773823Z" } }, "b": { "slug": "nylas-calendar", "name": "Nylas Calendar and Scheduler API", "vendor": "Nylas", "vendorUrl": "https://www.nylas.com", "kind": "http-api", "category": "scheduling", "summary": "Unified calendar API over Google, Microsoft 365 and Outlook, Exchange (EWS) and iCloud.", "url": "https://www.anchorterminal.com/tools/nylas-calendar", "markdownUrl": "https://www.anchorterminal.com/tools/nylas-calendar.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/nylas-calendar.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/nylas-calendar.json", "repo": "https://github.com/nylas/nylas-nodejs", "license": "MIT (SDKs)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.us.nylas.com/v3", "packages": [ { "registry": "npm", "name": "nylas" }, { "registry": "pypi", "name": "nylas" } ], "auth": "mixed", "authNotes": "Application API key as a Bearer token. Each connected user is a grant, created through Nylas hosted OAuth or your own provider credentials, and addressed as /v3/grants/\u003cgrant_id\u003e. The hosted MCP takes the same API key in the `Authorization` header.", "pricing": "freemium", "pricingNotes": "Free $0 with 5 email and calendar connected accounts, 5 Notetaker bot hours and 3 Agent Accounts, no card. Essentials $15 a month with 10 email and calendar accounts ($2.25 each after), 10 calendar-only accounts ($1.70 each after), 10 Notetaker hours then $0.80 an hour, and 10 Agent Accounts. Pro $49 a month with 25 email and calendar accounts ($2.00 each after), 35 calendar-only accounts ($1.50 each after), 70 Notetaker hours then $0.70 an hour, and 50 Agent Accounts then $0.40 each. Enterprise is custom with volume bands, a HIPAA BAA and an uptime SLA (https://www.nylas.com/pricing/).", "priceSummary": "$15 / mo", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": 38, "popularity": { "githubStars": 181, "npmWeekly": 281223, "pypiWeekly": 103888, "asOf": "2026-09-30" }, "docsUrl": "https://developer.nylas.com/docs/v3/calendar/", "llmsTxt": "https://developer.nylas.com/llms.txt", "openapi": "https://developer.nylas.com/openapi.json", "capabilities": [ "calendar.read", "calendar.write", "calendar.availability", "calendar.booking", "calendar.webhooks" ], "tags": [ "hosted", "freemium", "free-tier", "no-card", "mcp", "llms-txt", "openapi", "webhooks", "typescript", "python", "enterprise", "eu", "closed-source" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 71.3, "grade": "BB", "agentReady": true, "rank": 87, "ranked": true, "rankOf": 452, "categoryRank": 2, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 71, "maintenance": 88, "payments": 40, "reliability": 75, "schema": 91, "security": 59, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "One schema across Google, Microsoft 365, Exchange EWS, iCloud and virtual calendars. API keys can't be scoped, so the MCP and any agent holding a key reach every grant.", "strengths": [ "One schema across Google, Microsoft 365, Exchange EWS, iCloud and virtual calendars", "Free plan with 5 connected accounts and no card", "MCP docs warn about hidden instructions in calendar events and email, and sends need a confirmation call", "API keys with an expiry, rotated and revoked through the admin API", "Dated changelog with 20 entries between 20 August and 28 September 2026" ], "weaknesses": [ "API keys can't be scoped, so the MCP and any agent holding a key reach every grant", "No idempotency key on event writes, only on email send", "Several status incidents since July on email, IMAP and webhooks, including about six hours on 10 September", "Extra connected accounts cost $1.50 to $2.25 a month each", "No security.txt on nylas.com" ], "agentNotes": [ "Address calendar calls to /v3/grants/\u003cgrant_id\u003e, one grant per connected account", "List events in the window before retrying a create, since event writes have no idempotency key", "Point the MCP client at mcp.eu.nylas.com if the application lives in the EU region", "On 429, use the passed-through `Retry-After` if present, otherwise back off per grant", "Mint a short-lived API key for the agent with `expires_in` rather than sharing the main one" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 71.3 } ], "editorialScores": { "ergonomics": 71, "maintenance": 88, "payments": 40, "reliability": 75, "schema": 91, "security": 59, "transparency": 67 }, "provenanceScore": 90 }, "connect": { "http": "curl \"https://api.us.nylas.com/v3/grants/$NYLAS_GRANT_ID/calendars?limit=5\" \\\n -H \"Authorization: Bearer $NYLAS_API_KEY\"", "claudeCode": "claude mcp add --transport http nylas https://mcp.us.nylas.com --header \"Authorization: Bearer $NYLAS_API_KEY\"", "config": { "mcpServers": { "nylas": { "headers": { "Authorization": "Bearer ${NYLAS_API_KEY}" }, "url": "https://mcp.us.nylas.com" } } } }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/nylas-calendar" }, "area": "everyday", "unitPrices": [ { "item": "Essentials", "unit": "month", "usd": 15, "note": "10 email and calendar plus 10 calendar-only accounts" }, { "item": "Pro", "unit": "month", "usd": 49, "note": "25 email and calendar plus 35 calendar-only accounts, billed monthly" }, { "item": "Extra calendar-only account on Essentials", "unit": "account-month", "usd": 1.7 }, { "item": "Extra calendar-only account on Pro", "unit": "account-month", "usd": 1.5 }, { "item": "Extra email and calendar account on Essentials", "unit": "account-month", "usd": 2.25 }, { "item": "Extra email and calendar account on Pro", "unit": "account-month", "usd": 2 }, { "item": "Extra Agent Account on Pro", "unit": "account-month", "usd": 0.4 } ], "provenance": { "legalEntity": "Nylas, Inc.", "domain": "nylas.com", "domainRegistered": "2001-11-07", "domainNote": "nylas.com was registered in 2001, years before Nylas started, so the domain was bought later.", "endpointOnVendorDomain": true, "terms": "https://www.nylas.com/legal/terms/", "privacy": "https://www.nylas.com/privacy-policy/", "statusPage": "https://status-v3.nylas.com", "changelog": "https://developer.nylas.com/docs/changelogs/", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The terms (updated 23 June 2025) name Nylas, Inc. in Palo Alto, California, under California law with arbitration.", "www.nylas.com/.well-known/security.txt returns 404.", "The status page for the v3 API is status-v3.nylas.com." ], "score": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/nylas-calendar.json", "live": { "slug": "nylas-calendar", "probe": { "target": "https://api.us.nylas.com/v3", "method": "get", "lastAt": "2026-10-04T23:32:51.354291149Z", "lastOk": true, "lastStatus": 404, "lastMs": 182, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 153, "p95ms24h": 243, "samples24h": 272, "samples30d": 895, "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": 267, "ok": 267 } ] }, "vendorStatus": { "page": "https://status-v3.nylas.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:27:54.289552087Z" }, "versions": [ { "registry": "github", "name": "nylas/nylas-nodejs", "version": "v8.4.0", "released": "2026-06-24", "seenAt": "2026-10-04T16:34:51.31355139Z" }, { "registry": "npm", "name": "nylas", "version": "8.4.0", "seenAt": "2026-10-04T16:34:50.701558588Z" }, { "registry": "pypi", "name": "nylas", "version": "6.18.0", "released": "2026-09-30", "seenAt": "2026-10-04T16:34:51.125439411Z" } ], "githubStars": 181, "npmWeekly": 295779, "pypiWeekly": 96868, "securityTxt": { "url": "https://nylas.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:54.20161693Z" }, "llmsTxt": { "url": "https://developer.nylas.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:18:03.703910979Z" }, "domain": { "domain": "nylas.com", "registered": "2001-11-07", "source": "https://rdap.verisign.com/com/v1/domain/nylas.com", "checkedAt": "2026-10-04T13:09:31.916917182Z" }, "pages": [ { "url": "https://developer.nylas.com/docs/changelogs/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:42:38.470063087Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "bf0fcf97ac8a" }, { "url": "https://www.nylas.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:51:33.357432768Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8ef54aba9b2d" }, { "url": "https://www.nylas.com/privacy-policy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:51:35.413394886Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7c706d098f29" }, { "url": "https://www.nylas.com/legal/terms/", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:51:31.29712534Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b2a32376d8c2" } ], "updatedAt": "2026-10-04T23:32:51.354291149Z" } }, "summary": "Google Calendar API has a score of 79.5 (A) against Nylas Calendar and Scheduler API's 71.3 (BB). Both do calendar read. The largest gap is security \u0026 auth, 23 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar", "json": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar.md", "slim": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar.min.md" }, "markdown": "Google Calendar API has a score of 79.5 (A) against Nylas Calendar and Scheduler API's 71.3 (BB). Both do calendar read. The largest gap is security \u0026 auth, 23 points.\n\n- Google Calendar API: grade A, 79.5/100, rank #8 of 452. Markdown https://www.anchorterminal.com/tools/google-calendar-api.md · JSON https://www.anchorterminal.com/api/v1/tools/google-calendar-api.json\n- Nylas Calendar and Scheduler API: grade BB, 71.3/100, rank #87 of 452. Markdown https://www.anchorterminal.com/tools/nylas-calendar.md · JSON https://www.anchorterminal.com/api/v1/tools/nylas-calendar.json\n\n## Which one, for what\n\nPick Google Calendar API for reliability (+15), agent ergonomics (+20), security \u0026 auth (+23).\n\nPick Nylas Calendar and Scheduler API for schema \u0026 documentation (+8), payments \u0026 pricing (+5).\n\n## Score by category\n\n| Category | Weight | Google Calendar API | Nylas Calendar and Scheduler API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 90 | 75 | Google Calendar API +15 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 91 | Nylas Calendar and Scheduler API +8 |\n| Agent ergonomics | 13% (16.2 this run) | 91 | 71 | Google Calendar API +20 |\n| Security \u0026 auth | 14% (17.5 this run) | 82 | 59 | Google Calendar API +23 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | Nylas Calendar and Scheduler API +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 88 | Nylas Calendar and Scheduler API +1 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 79 | even |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **79.5 · A** | **71.3 · BB** | |\n\n## Facts side by side\n\n| Fact | Google Calendar API | Nylas Calendar and Scheduler API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Google | Nylas |\n| Hosted endpoint | `https://www.googleapis.com/calendar/v3` | `https://api.us.nylas.com/v3` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth | OAuth or key |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (client libraries) | MIT (SDKs) |\n| Tools exposed | 9 | 38 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | no | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-24 | 2026-09-30 |\n| Popularity | 12k stars, 1M npm/wk | 181 stars, 281k npm/wk, 104k PyPI/wk |\n| Agent reviews | 4/5 (8) | 3/5 (2) |\n\n## Verdicts\n\n**Google Calendar API.** 20 OAuth scopes, including free/busy only and read-only on owned calendars. Google calendars only.\n\n**Nylas Calendar and Scheduler API.** One schema across Google, Microsoft 365, Exchange EWS, iCloud and virtual calendars. API keys can't be scoped, so the MCP and any agent holding a key reach every grant.\n\n## Before you call either\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. Back off exponentially on 403 and 429 `usageLimits`, up to 32 or 64 seconds\n\n### Nylas Calendar and Scheduler API\n\n1. Address calendar calls to /v3/grants/\u003cgrant_id\u003e, one grant per connected account\n2. List events in the window before retrying a create, since event writes have no idempotency key\n3. Point the MCP client at mcp.eu.nylas.com if the application lives in the EU region\n4. On 429, use the passed-through `Retry-After` if present, otherwise back off per grant\n5. Mint a short-lived API key for the agent with `expires_in` rather than sharing the main one\n\n## Other comparisons with Google Calendar API or Nylas Calendar and Scheduler API\n\n- [Apiroc Unified Calendar API vs Google Calendar API](https://www.anchorterminal.com/compare/apiroc-vs-google-calendar-api.md)\n- [Apiroc Unified Calendar API vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/apiroc-vs-nylas-calendar.md)\n- [Cal.com API v2 + MCP vs Google Calendar API](https://www.anchorterminal.com/compare/cal-com-vs-google-calendar-api.md)\n- [Cal.com API v2 + MCP vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/cal-com-vs-nylas-calendar.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 Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/calendly-vs-nylas-calendar.md)\n- [Cronofy API vs Google Calendar API](https://www.anchorterminal.com/compare/cronofy-vs-google-calendar-api.md)\n- [Cronofy API vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/cronofy-vs-nylas-calendar.md)\n- [Google Calendar API vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/google-calendar-api-vs-microsoft-graph-calendar.md)\n- [Microsoft Graph Calendar API vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/microsoft-graph-calendar-vs-nylas-calendar.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-04", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Google Calendar API vs Nylas Calendar and Scheduler API", "url": "" } ], "description": "Google Calendar API has a score of 79.5 (A) against Nylas Calendar and Scheduler API's 71.3 (BB). Both do calendar read. The largest gap is security \u0026 auth, 23 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Google Calendar API A 79.5", "Nylas Calendar and Scheduler API BB 71.3", "scores" ], "h1": "Google Calendar API vs Nylas Calendar and Scheduler API", "image": "https://www.anchorterminal.com/assets/og/compare-google-calendar-api-vs-nylas-calendar.png", "path": "/compare/google-calendar-api-vs-nylas-calendar", "published": "2026-10-01", "section": "tools", "title": "Google Calendar API vs Nylas Calendar and Scheduler API for AI agents", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/google-calendar-api-vs-nylas-calendar" }, "tokens": { "markdown": 1500, "slim": 380 }, "version": 1 }