Independent review. IonBin has no partnership with Cal.com and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.
Open-source scheduling with booking pages, routing forms and an API. Its official MCP server (hosted at mcp.cal.com with OAuth, or local with an API key) lets an AI assistant list, book, reschedule or cancel bookings.
Cal.com lists Free (1 user, unlimited event types), Teams ($12 per user/month billed yearly, adds round-robin and routing forms), Organizations ($28 per user/month billed yearly, adds SSO and sub-teams) and custom-priced Enterprise. Yearly billing saves 25%. Checked 2026-10-17. source ↗
The hosted server at mcp.cal.com uses Streamable HTTP with OAuth 2.1, and toolsets can be limited in the URL. A local server runs over stdio with a Cal.com API key. The docs don't list plan restrictions. source ↗
How Cal.com connects to each AI platform: native connector or MCP, API through code the agent writes, browser control, or file upload.
| Platform | MCP / connector | API (agent-written code) | Browser | Upload / export |
|---|---|---|---|---|
| Claude (incl. Claude Code) | Confirmed Cal.com's docs name Claude (incl. Claude Code) Cal.com docs ↗Claude (incl. Claude Code) MCP docs ↗ | Confirmed Claude (incl. Claude Code) can run code; Cal.com publishes an API. Cal.com API ↗Claude (incl. Claude Code) docs ↗ | Confirmed Claude Code with the Claude in Chrome extension (Chrome, Edge and other Chromium browsers) Claude (incl. Claude Code) browser docs ↗ | Confirmed Export from Cal.com, then works on the files in your project; chat accepts attachments Claude (incl. Claude Code) docs ↗ |
| OpenAI Codex | Not documented Cal.com has an official MCP server and OpenAI Codex supports MCP, but Cal.com's docs don't name this pairing. Auth setup may differ. Cal.com MCP docs ↗OpenAI Codex MCP docs ↗ | Confirmed OpenAI Codex can run code; Cal.com publishes an API. Cal.com API ↗OpenAI Codex docs ↗ | Confirmed Only in the ChatGPT desktop app; not in the Codex CLI or IDE extension OpenAI Codex browser docs ↗ | Confirmed Export from Cal.com, then works on local repositories OpenAI Codex docs ↗ |
| Google Antigravity | Not documented Cal.com has an official MCP server and Google Antigravity supports MCP, but Cal.com's docs don't name this pairing. Auth setup may differ. Cal.com MCP docs ↗Google Antigravity MCP docs ↗ | Confirmed Google Antigravity can run code; Cal.com publishes an API. Cal.com API ↗Google Antigravity docs ↗ | Confirmed Browser subagent via /browser, documented as an Antigravity App feature; the IDE has separate browser docs Google Antigravity browser docs ↗ | Confirmed Export from Cal.com, then works on local projects and worktrees Google Antigravity docs ↗ |
Confirmed means both the tool's and the platform's official docs describe that route (links in the cell); IonBin has not tested every pairing. Not documented means it may work, but no official docs describe that route end to end. Checked Oct 17, 2026.
| Level | Status | Detail / source |
|---|---|---|
| Native connector / MCP | Yes | Official docs ↗ |
| API / CLI | Yes | Official docs ↗ |
| Browser-only | No | Web app; also reachable programmatically |
| Bulk upload / import | Yes | Import availability, booking links and bookings from Calendly (https://cal.com/help/importing/import-from-calendly-and-savvycal) |
Recorded Oct 17, 2026. Setup and plan limits vary; check the vendor's docs. How levels are assigned.
Via its official MCP server, from MCP-capable platforms such as ChatGPT, Claude, Gemini (Google), Google Antigravity, OpenAI Codex.
Via its API, through automation hubs: Gumloop, Make, n8n, Zapier.
No long-form review yet. Verdict is based on research, not hands-on testing.
AI calendar that schedules focus time, tasks and habits around meetings. Its MCP server (mcp.reclaim.ai) connects ChatGPT, Claude, Cursor and other clients; scheduling changes an AI proposes are staged in Preview Mode for you to review.
