{
  "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": "2026-10-05T01:43:33.188966036Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 267,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 226,
          "p95ms24h": 307,
          "samples24h": 272,
          "samples30d": 920,
          "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": 20,
              "ok": 20
            }
          ]
        },
        "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": "2026-10-05T01:43:33.188966036Z"
      }
    },
    "b": {
      "slug": "cal-com",
      "name": "Cal.com API v2 + MCP",
      "vendor": "Cal.com",
      "vendorUrl": "https://cal.com",
      "kind": "http-api",
      "category": "scheduling",
      "summary": "Scheduling API behind Cal.com's booking pages.",
      "url": "https://www.anchorterminal.com/tools/cal-com",
      "markdownUrl": "https://www.anchorterminal.com/tools/cal-com.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cal-com.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cal-com.json",
      "repo": "https://github.com/calcom/cal-mcp",
      "license": "Proprietary (hosted product since April 2026). The @calcom/cal-mcp package and repository carry no licence",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.cal.com/v2",
      "packages": [
        {
          "registry": "npm",
          "name": "@calcom/cal-mcp"
        }
      ],
      "auth": "mixed",
      "authNotes": "Bearer API key from Settings, prefixed `cal_` in test mode and `cal_live_` in live mode, or OAuth for integrations used by other Cal.com users. Most endpoints also want a `cal-api-version` header with a date (2024-09-04 for slots). The hosted MCP at mcp.cal.com signs in with OAuth 2.1. The local server reads `CAL_API_KEY`.",
      "pricing": "freemium",
      "pricingNotes": "Free plan for one user with unlimited event types and calendars. Teams $12 a user a month and Organizations $28 a user a month, both billed yearly (25 per cent off monthly), each with a 14-day trial. Enterprise is custom and annual. Teams adds round-robin, collective event types and routing forms. The Organizations plan adds sub-teams, SAML SSO, SCIM, domain-wide delegation and more APIs (https://cal.com/pricing). The separate Platform product has been closed to new sign-ups since 15 December 2025 (https://cal.com/docs/api-reference/v2/introduction).",
      "priceSummary": "$12 / seat-mo",
      "where": "both",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": 63,
      "popularity": {
        "githubStars": 30,
        "npmWeekly": 786,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://cal.com/docs/api-reference/v2/introduction",
      "llmsTxt": "https://cal.com/docs/llms.txt",
      "openapi": "https://cal.com/docs/api-reference/v2/openapi.json",
      "capabilities": [
        "calendar.read",
        "calendar.availability",
        "calendar.booking",
        "calendar.webhooks"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "mcp",
        "llms-txt",
        "openapi",
        "webhooks",
        "typescript",
        "closed-source",
        "enterprise"
      ],
      "lastRelease": "2026-09-15",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 57.5,
        "grade": "C",
        "agentReady": false,
        "rank": 292,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 6,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 50,
          "maintenance": 50,
          "payments": 30,
          "reliability": 60,
          "schema": 76,
          "security": 56,
          "transparency": 81
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "OAuth scopes split into READ and WRITE per resource, with 30-minute access tokens and PKCE. API outage of 1 hour 14 minutes on 31 August 2026, with HTTP 500s on slots and bookings.",
        "strengths": [
          "OAuth scopes split into READ and WRITE per resource, with 30-minute access tokens and PKCE",
          "Hosted MCP with 63 tools and a `toolsets` parameter to load only the groups needed",
          "OpenAPI 3.0 spec, llms.txt and Markdown reference pages",
          "Cursor pagination and filters on bookings by status, attendee, event type and time",
          "ISO 27001, SOC 2 Type II and a Bugcrowd disclosure programme"
        ],
        "weaknesses": [
          "API outage of 1 hour 14 minutes on 31 August 2026, with HTTP 500s on slots and bookings",
          "120 requests a minute by default and no documented 429 or retry behaviour",
          "Closed source since April 2026, and the npm MCP package hasn't changed since May 2025",
          "No idempotency key on booking creation",
          "Plain API keys can't be scoped"
        ],
        "agentNotes": [
          "Send `cal-api-version: 2026-05-01` on bookings and `2024-09-04` on slots, since each endpoint pins its own version",
          "Append `?toolsets=bookings,availability` to the hosted MCP URL to skip the other 50-odd tools",
          "Page bookings with `pagination.nextCursor`, not offsets",
          "Check for an existing booking before retrying a create, since there's no idempotency key",
          "Use `cal_` test keys while building so bookings don't reach real calendars"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 57.5
          }
        ],
        "editorialScores": {
          "ergonomics": 50,
          "maintenance": 50,
          "payments": 30,
          "reliability": 60,
          "schema": 76,
          "security": 56,
          "transparency": 61
        },
        "provenanceScore": 100
      },
      "connect": {
        "http": "curl \"https://api.cal.com/v2/slots?eventTypeId=123\u0026start=2026-10-01\u0026end=2026-10-02\u0026timeZone=Europe/London\" \\\n  -H \"Authorization: Bearer $CAL_API_KEY\" \\\n  -H \"cal-api-version: 2024-09-04\"",
        "claudeCode": "claude mcp add --transport http calcom https://mcp.cal.com/mcp",
        "config": {
          "mcpServers": {
            "calcom": {
              "args": [
                "@calcom/cal-mcp@latest"
              ],
              "command": "npx",
              "env": {
                "CAL_API_KEY": "${CAL_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/calendar.read",
        "tool": "https://letme.dev/cal-com"
      },
      "area": "everyday",
      "unitPrices": [
        {
          "item": "Teams",
          "unit": "seat-month",
          "usd": 12,
          "note": "Billed yearly"
        },
        {
          "item": "Organizations plan",
          "unit": "seat-month",
          "usd": 28,
          "note": "Billed yearly"
        }
      ],
      "provenance": {
        "legalEntity": "Cal.com, Inc.",
        "domain": "cal.com",
        "domainRegistered": "1997-05-16",
        "domainNote": "cal.com was registered in 1997, long before Cal.com launched, so the domain was bought later.",
        "endpointOnVendorDomain": true,
        "terms": "https://cal.com/terms",
        "privacy": "https://cal.com/privacy",
        "statusPage": "https://status.cal.com",
        "changelog": "https://cal.com/blog",
        "securityTxt": "valid",
        "checked": "2026-09-30",
        "notes": [
          "The privacy policy (effective 20 August 2026) gives a San Francisco address. The terms carry an effective date of 2021-04-14 and name the laws of the United Kingdom.",
          "security.txt expires 2030-06-01 and lists GitHub security advisories on calcom/cal.com as the contact, a repository that now hosts the Cal.diy fork.",
          "Release notes are blog posts titled Changelog, the latest v6.9 on 2026-09-15. cal.com/changelog is a user's booking page, not a changelog."
        ],
        "score": 100
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/cal-com.json",
      "live": {
        "slug": "cal-com",
        "probe": {
          "target": "https://api.cal.com/v2",
          "method": "get",
          "lastAt": "2026-10-05T01:43:35.093755374Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 564,
          "authRequired": false,
          "uptime24h": 99.26,
          "uptime30d": 99.67,
          "p50ms24h": 170,
          "p95ms24h": 472,
          "samples24h": 272,
          "samples30d": 920,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 108
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 271
            },
            {
              "date": "2026-10-05",
              "probes": 20,
              "ok": 19
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.cal.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:39:52.522007548Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@calcom/cal-mcp",
            "version": "0.0.6",
            "seenAt": "2026-10-04T16:23:04.926115513Z"
          }
        ],
        "githubStars": 30,
        "npmWeekly": 842,
        "securityTxt": {
          "url": "https://cal.com/.well-known/security.txt",
          "state": "valid",
          "expires": "2030-06-01T00:00:00.000Z",
          "checkedAt": "2026-10-04T15:15:57.566384637Z"
        },
        "llmsTxt": {
          "url": "https://cal.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:22.775927876Z"
        },
        "domain": {
          "domain": "cal.com",
          "registered": "1997-05-16",
          "source": "https://rdap.verisign.com/com/v1/domain/cal.com",
          "checkedAt": "2026-10-04T13:04:17.498740317Z"
        },
        "pages": [
          {
            "url": "https://cal.com/blog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:42.239603755Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "0cae70614a2b"
          },
          {
            "url": "https://cal.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:44.469306726Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d5bfa59d374c"
          },
          {
            "url": "https://cal.com/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:46.462750529Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e1740e3fca2d"
          },
          {
            "url": "https://cal.com/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:48.371581449Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "441bf02fe62c"
          }
        ],
        "updatedAt": "2026-10-05T01:43:35.093755374Z"
      }
    },
    "summary": "Cal.com API v2 + MCP has a score of 57.5 (C) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security \u0026 auth, 35 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/apiroc-vs-cal-com",
    "json": "https://www.anchorterminal.com/compare/apiroc-vs-cal-com.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/apiroc-vs-cal-com.md",
    "slim": "https://www.anchorterminal.com/compare/apiroc-vs-cal-com.min.md"
  },
  "markdown": "Cal.com API v2 + MCP has a score of 57.5 (C) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security \u0026 auth, 35 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- Cal.com API v2 + MCP: grade C, 57.5/100, rank #292 of 452. Markdown https://www.anchorterminal.com/tools/cal-com.md · JSON https://www.anchorterminal.com/api/v1/tools/cal-com.json\n\n## Which one, for what\n\nPick Apiroc Unified Calendar API for payments \u0026 pricing (+10), maintenance \u0026 community (+12).\n\nPick Cal.com API v2 + MCP for reliability (+25), schema \u0026 documentation (+32), security \u0026 auth (+35), transparency \u0026 trust (+28).\n\n## Score by category\n\n| Category | Weight | Apiroc Unified Calendar API | Cal.com API v2 + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 35 | 60 | Cal.com API v2 + MCP +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 44 | 76 | Cal.com API v2 + MCP +32 |\n| Agent ergonomics | 13% (16.2 this run) | 52 | 50 | Apiroc Unified Calendar API +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 21 | 56 | Cal.com API v2 + MCP +35 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 30 | Apiroc Unified Calendar API +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 62 | 50 | Apiroc Unified Calendar API +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 53 | 81 | Cal.com API v2 + MCP +28 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **41.3 · E** | **57.5 · C** | |\n\n## Facts side by side\n\n| Fact | Apiroc Unified Calendar API | Cal.com API v2 + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Apiroc | Cal.com |\n| Hosted endpoint | `https://api.apiroc.com/api/v1` | `https://api.cal.com/v2` |\n| Transports | HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | MIT (Node SDK) | Proprietary (hosted product since April 2026). The @calcom/cal-mcp package and repository carry no licence |\n| Tools exposed | none | 63 |\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 | 2026-08-05 | 2026-09-15 |\n| Popularity | 26 npm/wk | 30 stars, 786 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**Cal.com API v2 + MCP.** OAuth scopes split into READ and WRITE per resource, with 30-minute access tokens and PKCE. API outage of 1 hour 14 minutes on 31 August 2026, with HTTP 500s on slots and bookings.\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### Cal.com API v2 + MCP\n\n1. Send `cal-api-version: 2026-05-01` on bookings and `2024-09-04` on slots, since each endpoint pins its own version\n2. Append `?toolsets=bookings,availability` to the hosted MCP URL to skip the other 50-odd tools\n3. Page bookings with `pagination.nextCursor`, not offsets\n4. Check for an existing booking before retrying a create, since there's no idempotency key\n5. Use `cal_` test keys while building so bookings don't reach real calendars\n\n## Other comparisons with Apiroc Unified Calendar API or Cal.com API v2 + MCP\n\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 Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar.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 Calendly API + MCP](https://www.anchorterminal.com/compare/cal-com-vs-calendly.md)\n- [Cal.com API v2 + MCP vs Cronofy API](https://www.anchorterminal.com/compare/cal-com-vs-cronofy.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 Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/cal-com-vs-microsoft-graph-calendar.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",
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        "name": "Apiroc Unified Calendar API vs Cal.com API v2 + MCP",
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    "description": "Cal.com API v2 + MCP has a score of 57.5 (C) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security \u0026 auth, 35 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Apiroc Unified Calendar API vs Cal.com API v2 + MCP for AI agents",
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