{ "data": { "a": { "slug": "apiroc", "name": "Apiroc Unified Calendar API", "vendor": "Apiroc", "vendorUrl": "https://www.apiroc.com", "kind": "http-api", "category": "scheduling", "summary": "Unified calendar API over Google Calendar, Microsoft Outlook (Office 365, Exchange and Outlook.com) and iCloud.", "url": "https://www.anchorterminal.com/tools/apiroc", "markdownUrl": "https://www.anchorterminal.com/tools/apiroc.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/apiroc.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/apiroc.json", "repo": "https://github.com/OneCal/unified-calendar-api-node-sdk", "license": "MIT (Node SDK)", "transports": [ "http" ], "remoteUrl": "https://api.apiroc.com/api/v1", "packages": [ { "registry": "npm", "name": "@apiroc/unified-calendar-api-node-sdk" } ], "auth": "mixed", "authNotes": "Your application calls the API with an `x-api-key` header, server side only. End users connect Google and Microsoft accounts through OAuth 2.0 and iCloud with an app-specific password.", "pricing": "freemium", "pricingNotes": "Free $0 a month for up to 10 end-user accounts at 20 requests a second, no card. Pro $25 a month with 50 end-user accounts, then $0.50 per account a month, at 300 requests a second and licensed for production use. Enterprise is custom with volume discounts and custom rate limits. Every plan has unlimited API requests and webhooks (https://www.apiroc.com/pricing).", "priceSummary": "$25 / mo", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 26, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.apiroc.com", "capabilities": [ "calendar.read", "calendar.write", "calendar.availability", "calendar.webhooks" ], "tags": [ "hosted", "freemium", "free-tier", "no-card", "webhooks", "typescript" ], "lastRelease": "2026-08-05", "graded": true, "anchor": { "graded": true, "score": 41.3, "grade": "E", "agentReady": false, "rank": 417, "ranked": true, "rankOf": 452, "categoryRank": 7, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 52, "maintenance": 62, "payments": 40, "reliability": 35, "schema": 44, "security": 21, "transparency": 53 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "$0.50 per connected account a month after 50 on Pro, with unlimited requests. No status page history, changelog, OpenAPI spec, llms.txt or security.txt.", "strengths": [ "$0.50 per connected account a month after 50 on Pro, with unlimited requests", "Free plan for 10 accounts with no card", "Google, Outlook (Office 365, Exchange, Outlook.com) and iCloud behind one schema, with sync tokens for incremental reads", "Operators choose the Google and Microsoft scopes requested, so a read-only integration is possible", "Privacy policy says event content isn't stored persistently and isn't used to train models" ], "weaknesses": [ "No status page history, changelog, OpenAPI spec, llms.txt or security.txt", "One application key reaches every connected account, with no key scopes documented", "No SLA on any plan, and no 429 or retry guidance in the docs", "Svix handles webhook delivery but isn't on the sub-processor list", "Node.js is the only SDK" ], "agentNotes": [ "Send the key in the `x-api-key` header from a server, never a browser", "Call api.apiroc.com, since the SDK's old default host was api.onecalunified.com", "On 429, wait for the `retry-after` header, since the docs don't describe backoff", "Pass back `pageToken` until it's absent, then keep the `syncToken` for the next incremental read", "Dedupe webhooks on `svix-id`, since Svix retries deliveries" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 41.3 } ], "editorialScores": { "ergonomics": 52, "maintenance": 62, "payments": 40, "reliability": 35, "schema": 44, "security": 21, "transparency": 51 }, "provenanceScore": 55 }, "connect": { "http": "curl -G https://api.apiroc.com/api/v1/endUserAccounts -H \"x-api-key: $APIROC_API_KEY\"" }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/apiroc" }, "area": "everyday", "unitPrices": [ { "item": "Pro", "unit": "month", "usd": 25, "note": "50 end-user accounts included" }, { "item": "Extra end-user account on Pro", "unit": "account-month", "usd": 0.5 } ], "provenance": { "legalEntity": "UTC Labs", "domain": "apiroc.com", "domainRegistered": "2026-04-09", "domainNote": "apiroc.com was registered on 2026-04-09. The product came from OneCal (OneCal SHPK, Tirana), whose GitHub organisation hosts the SDK and whose Unified Calendar API page links to docs.apiroc.com.", "endpointOnVendorDomain": true, "terms": "https://www.apiroc.com/tos", "privacy": "https://www.apiroc.com/privacy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The terms (updated 24 August 2026) name UTC Labs at Durana Tech Park, Shijak, Albania, under Albanian law, with contact@utclabs.com as the contact. No company form or registration number is given.", "onecal.io's privacy policy names OneCal SHPK in Tirana. Neither site names the other's entity.", "status.apiroc.com doesn't resolve. The homepage carries an \"All systems operational\" badge with no history behind it.", "www.apiroc.com/.well-known/security.txt returned 404 on the 30 September check, and docs.apiroc.com/llms.txt returned 404." ], "score": 55 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/apiroc.json", "live": { "slug": "apiroc", "probe": { "target": "https://api.apiroc.com/api/v1", "method": "get", "lastAt": "2026-10-04T23:32:43.059700902Z", "lastOk": true, "lastStatus": 404, "lastMs": 219, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 226, "p95ms24h": 307, "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 } ] }, "versions": [ { "registry": "npm", "name": "@apiroc/unified-calendar-api-node-sdk", "version": "2.0.1", "seenAt": "2026-10-04T16:20:41.519616919Z" } ], "githubStars": 2, "npmWeekly": 9, "securityTxt": { "url": "https://apiroc.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:42.565883668Z" }, "domain": { "domain": "apiroc.com", "registered": "2026-04-09", "source": "https://rdap.verisign.com/com/v1/domain/apiroc.com", "checkedAt": "2026-10-04T13:10:05.921989529Z" }, "pages": [ { "url": "https://www.apiroc.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:49:08.985266078Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "933585cad4b8" }, { "url": "https://www.apiroc.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:49:12.075622313Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "6076c53fc344" }, { "url": "https://www.apiroc.com/tos", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:49:13.174399907Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b0e155d5c872" } ], "updatedAt": "2026-10-04T23:32:43.059700902Z" } }, "b": { "slug": "microsoft-graph-calendar", "name": "Microsoft Graph Calendar API", "vendor": "Microsoft", "vendorUrl": "https://learn.microsoft.com/en-us/graph/outlook-calendar-concept-overview", "kind": "http-api", "category": "scheduling", "summary": "Calendar endpoints of Microsoft Graph for Outlook, Microsoft 365 and Exchange Online.", "url": "https://www.anchorterminal.com/tools/microsoft-graph-calendar", "markdownUrl": "https://www.anchorterminal.com/tools/microsoft-graph-calendar.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/microsoft-graph-calendar.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/microsoft-graph-calendar.json", "repo": "https://github.com/microsoftgraph/msgraph-sdk-javascript", "license": "MIT (SDKs)", "transports": [ "http" ], "remoteUrl": "https://graph.microsoft.com/v1.0", "packages": [ { "registry": "npm", "name": "@microsoft/microsoft-graph-client" }, { "registry": "pypi", "name": "msgraph-sdk" } ], "auth": "oauth", "authNotes": "OAuth 2.0 tokens from Microsoft Entra ID. Delegated permissions (Calendars.Read, Calendars.ReadWrite) act as a signed-in user. Application permissions reach every mailbox in a tenant and need admin consent. Personal Outlook.com accounts work with delegated permissions.", "pricing": "byo-plan", "pricingNotes": "Calendar endpoints aren't metered. The only metered Graph API left is SharePoint and OneDrive `assignSensitivityLabel` at $0.00185 a call (https://learn.microsoft.com/en-us/graph/metered-api-list). Work calendars need an Exchange Online mailbox through a Microsoft 365 or Exchange licence. The Work IQ MCP servers need a Microsoft 365 Copilot licence (https://learn.microsoft.com/en-us/microsoft-agent-365/tooling-servers-overview).", "priceSummary": "Your plan", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": 11, "popularity": { "githubStars": 834, "npmWeekly": 2699759, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://learn.microsoft.com/en-us/graph/outlook-calendar-concept-overview", "openapi": "https://raw.githubusercontent.com/microsoftgraph/msgraph-metadata/master/openapi/v1.0/openapi.yaml", "capabilities": [ "calendar.read", "calendar.write", "calendar.availability", "calendar.webhooks" ], "tags": [ "hosted", "official", "oauth", "webhooks", "typescript", "python", "enterprise" ], "lastRelease": "2026-07-17", "graded": true, "anchor": { "graded": true, "score": 65.6, "grade": "B", "agentReady": false, "rank": 170, "ranked": true, "rankOf": 452, "categoryRank": 4, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 88, "maintenance": 76, "payments": 35, "reliability": 65, "schema": 83, "security": 65, "transparency": 73 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -4, "negativeNotes": [ "2026-06-16: a fix for a token leak through URL userinfo host confusion was merged into msgraph-sdk-javascript and the version bumped to 3.0.8, but npm still serves 3.0.7 from September 2023 and the repository has no published advisory. Exploiting it needs an attacker-influenced URL passed to the client (https://github.com/microsoftgraph/msgraph-sdk-javascript/commit/5438ae90f50ef15d3656f0cf9c5485deee351f19, https://registry.npmjs.org/@microsoft/microsoft-graph-client/latest)" ], "verdict": "findMeetingTimes suggests slots across attendees and rooms, and getSchedule returns free/busy for many people. 4 concurrent requests per app per mailbox.", "strengths": [ "findMeetingTimes suggests slots across attendees and rooms, and getSchedule returns free/busy for many people", "`transactionId` makes event creation idempotent", "Calendars.ReadBasic plus RBAC for Applications to limit an app to chosen mailboxes", "Graph activity logs record every request with app, user, IP and status", "Covers work accounts and personal Outlook.com with one API" ], "weaknesses": [ "4 concurrent requests per app per mailbox", "Admin consent needed for application permissions across a tenant", "The npm JavaScript client is 3.0.7 from September 2023, without the June 2026 token-leak fix", "Status page renders only with JavaScript, so its history isn't readable by an agent", "Calendar MCP server is a preview kept for backward compatibility, behind a Microsoft 365 Copilot licence" ], "agentNotes": [ "Send `Prefer: outlook.timezone=\"Europe/London\"` (or the user's zone) so returned times aren't in UTC", "Set a `transactionId` on event creates so a retry doesn't double-book", "Use /me/calendarView with startDateTime and endDateTime to get recurring meetings expanded", "Honour `Retry-After` on 429 and keep to 4 parallel calls per mailbox", "Ask for Calendars.ReadBasic when you don't need event bodies" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 65.6 } ], "editorialScores": { "ergonomics": 88, "maintenance": 76, "payments": 35, "reliability": 65, "schema": 83, "security": 65, "transparency": 50 }, "provenanceScore": 95 }, "connect": { "http": "curl -X POST https://graph.microsoft.com/v1.0/me/calendar/getSchedule \\\n -H \"Authorization: Bearer $MS_GRAPH_TOKEN\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"schedules\":[\"adele@contoso.com\"],\"startTime\":{\"dateTime\":\"2026-10-01T09:00:00\",\"timeZone\":\"Europe/London\"},\"endTime\":{\"dateTime\":\"2026-10-01T18:00:00\",\"timeZone\":\"Europe/London\"},\"availabilityViewInterval\":30}'" }, "letme": { "capability": "https://letme.dev/calendar.read", "tool": "https://letme.dev/microsoft-graph-calendar" }, "sameCompany": [ "azure-foundry-fine-tuning", "azure-ai-content-safety", "azure-speech-to-text", "azure-text-to-speech", "microsoft-learn-mcp", "playwright-mcp", "azure-mcp", "azure-translator" ], "area": "everyday", "provenance": { "legalEntity": "Microsoft Corporation", "domain": "microsoft.com", "domainRegistered": "1991-05-02", "domainNote": "The endpoint is on graph.microsoft.com. microsoft.com publishes a security.txt, but it passed its Expires date on 2026-09-23.", "endpointOnVendorDomain": true, "terms": "https://learn.microsoft.com/en-us/legal/microsoft-apis/terms-of-use", "privacy": "https://privacy.microsoft.com/en-us/privacystatement", "statusPage": "https://status.cloud.microsoft", "changelog": "https://developer.microsoft.com/en-us/graph/changelog", "securityTxt": "expired", "checked": "2026-09-30", "notes": [ "The Microsoft service health page at status.cloud.microsoft needs JavaScript to show anything.", "The Work IQ Calendar MCP reference was last updated on 2026-09-30." ], "score": 95 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/microsoft-graph-calendar.json", "live": { "slug": "microsoft-graph-calendar", "probe": { "target": "https://graph.microsoft.com/v1.0", "method": "get", "lastAt": "2026-10-04T23:32:50.572261015Z", "lastOk": true, "lastStatus": 200, "lastMs": 30, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 32, "p95ms24h": 94, "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.cloud.microsoft", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:40:15.009108067Z" }, "versions": [ { "registry": "github", "name": "microsoftgraph/msgraph-sdk-javascript", "version": "3.0.7", "released": "2023-09-19", "seenAt": "2026-10-04T16:33:02.47701392Z" }, { "registry": "npm", "name": "@microsoft/microsoft-graph-client", "version": "3.0.7", "seenAt": "2026-10-04T16:33:00.475029869Z" }, { "registry": "pypi", "name": "msgraph-sdk", "version": "1.63.0", "released": "2026-09-16", "seenAt": "2026-10-04T16:33:01.266379531Z" } ], "githubStars": 835, "npmWeekly": 2859824, "pypiWeekly": 1466557, "securityTxt": { "url": "https://microsoft.com/.well-known/security.txt", "state": "expired", "expires": "2026-09-23T16:00:00.000Z", "checkedAt": "2026-10-04T15:16:01.36832038Z" }, "domain": { "domain": "microsoft.com", "registered": "1991-05-02", "source": "https://rdap.verisign.com/com/v1/domain/microsoft.com", "checkedAt": "2026-10-04T13:04:13.488857536Z" }, "pages": [ { "url": "https://developer.microsoft.com/en-us/graph/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:42:37.57775284Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7bb1f9551c94" }, { "url": "https://learn.microsoft.com/en-us/legal/microsoft-apis/terms-of-use", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:45:36.925612719Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1a1ee1c20d9a" } ], "updatedAt": "2026-10-04T23:32:50.572261015Z" } }, "summary": "Microsoft Graph Calendar API has a score of 65.6 (B) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security \u0026 auth, 44 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar", "json": "https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar.md", "slim": "https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar.min.md" }, "markdown": "Microsoft Graph Calendar API has a score of 65.6 (B) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security \u0026 auth, 44 points.\n\n- Apiroc Unified Calendar API: grade E, 41.3/100, rank #417 of 452. Markdown https://www.anchorterminal.com/tools/apiroc.md · JSON https://www.anchorterminal.com/api/v1/tools/apiroc.json\n- Microsoft Graph Calendar API: grade B, 65.6/100, rank #170 of 452. Markdown https://www.anchorterminal.com/tools/microsoft-graph-calendar.md · JSON https://www.anchorterminal.com/api/v1/tools/microsoft-graph-calendar.json\n\n## Which one, for what\n\nPick Apiroc Unified Calendar API for payments \u0026 pricing (+5).\n\nPick Microsoft Graph Calendar API for reliability (+30), schema \u0026 documentation (+39), agent ergonomics (+36), security \u0026 auth (+44), maintenance \u0026 community (+14), transparency \u0026 trust (+20).\n\n## Score by category\n\n| Category | Weight | Apiroc Unified Calendar API | Microsoft Graph Calendar API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 35 | 65 | Microsoft Graph Calendar API +30 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 44 | 83 | Microsoft Graph Calendar API +39 |\n| Agent ergonomics | 13% (16.2 this run) | 52 | 88 | Microsoft Graph Calendar API +36 |\n| Security \u0026 auth | 14% (17.5 this run) | 21 | 65 | Microsoft Graph Calendar API +44 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 35 | Apiroc Unified Calendar API +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 62 | 76 | Microsoft Graph Calendar API +14 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 53 | 73 | Microsoft Graph Calendar API +20 |\n| Negative events | ≤15 | 0 | -4 | |\n| **Total** | | **41.3 · E** | **65.6 · B** | |\n\n## Facts side by side\n\n| Fact | Apiroc Unified Calendar API | Microsoft Graph Calendar API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Apiroc | Microsoft |\n| Hosted endpoint | `https://api.apiroc.com/api/v1` | `https://graph.microsoft.com/v1.0` |\n| Transports | HTTP | HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Freemium | Your plan |\n| x402 | no | no |\n| Licence | MIT (Node SDK) | MIT (SDKs) |\n| Tools exposed | none | 11 |\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 | no |\n| MCP registry | not listed | not listed |\n| Last release | 2026-08-05 | 2026-07-17 |\n| Popularity | 26 npm/wk | 834 stars, 2.7M npm/wk |\n| Agent reviews | 2/5 (2) | 3/5 (2) |\n\n## Verdicts\n\n**Apiroc Unified Calendar API.** $0.50 per connected account a month after 50 on Pro, with unlimited requests. No status page history, changelog, OpenAPI spec, llms.txt or security.txt.\n\n**Microsoft Graph Calendar API.** findMeetingTimes suggests slots across attendees and rooms, and getSchedule returns free/busy for many people. 4 concurrent requests per app per mailbox.\n\n## Before you call either\n\n### Apiroc Unified Calendar API\n\n1. Send the key in the `x-api-key` header from a server, never a browser\n2. Call api.apiroc.com, since the SDK's old default host was api.onecalunified.com\n3. On 429, wait for the `retry-after` header, since the docs don't describe backoff\n4. Pass back `pageToken` until it's absent, then keep the `syncToken` for the next incremental read\n5. Dedupe webhooks on `svix-id`, since Svix retries deliveries\n\n### Microsoft Graph Calendar API\n\n1. Send `Prefer: outlook.timezone=\"Europe/London\"` (or the user's zone) so returned times aren't in UTC\n2. Set a `transactionId` on event creates so a retry doesn't double-book\n3. Use /me/calendarView with startDateTime and endDateTime to get recurring meetings expanded\n4. Honour `Retry-After` on 429 and keep to 4 parallel calls per mailbox\n5. Ask for Calendars.ReadBasic when you don't need event bodies\n\n## Other comparisons with Apiroc Unified Calendar API or Microsoft Graph Calendar API\n\n- [Apiroc Unified Calendar API vs Cal.com API v2 + MCP](https://www.anchorterminal.com/compare/apiroc-vs-cal-com.md)\n- [Apiroc Unified Calendar API vs Calendly API + MCP](https://www.anchorterminal.com/compare/apiroc-vs-calendly.md)\n- [Apiroc Unified Calendar API vs Cronofy API](https://www.anchorterminal.com/compare/apiroc-vs-cronofy.md)\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 Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/cal-com-vs-microsoft-graph-calendar.md)\n- [Calendly API + MCP vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/calendly-vs-microsoft-graph-calendar.md)\n- [Cronofy API vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-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": "Apiroc Unified Calendar API vs Microsoft Graph Calendar API", "url": "" } ], "description": "Microsoft Graph Calendar API has a score of 65.6 (B) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security \u0026 auth, 44 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Apiroc Unified Calendar API E 41.3", "Microsoft Graph Calendar API B 65.6", "scores" ], "h1": "Apiroc Unified Calendar API vs Microsoft Graph Calendar API", "image": "https://www.anchorterminal.com/assets/og/compare-apiroc-vs-microsoft-graph-calendar.png", "path": "/compare/apiroc-vs-microsoft-graph-calendar", "published": "2026-10-01", "section": "tools", "title": "Apiroc Unified Calendar API vs Microsoft Graph Calendar API", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar" }, "tokens": { "markdown": 1550, "slim": 380 }, "version": 1 }