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Dev Tools & GitMCP RegistryremoteB · 68

calendar-bridge MCP server

io.github.IsaiahDupree · Updated

Connects ChatGPT to your Apple Calendar via a local Mac agent + Vercel relay

At a glance

calendar-bridge is an MCP server in the Dev Tools & Git category. It is hosted remotely and connects over HTTP, and declares no required credentials. It scores B (68/100) on the MCP Skills Hub health score as of Oct 28, 2026.

Source 0GitHub stars

One-click install

Opens your editor and pre-fills the config. Your editor will ask before adding it.

How to install calendar-bridge in your AI client

Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.

How to install calendar-bridge in Claude CodeAnthropic's agentic CLI

  1. Add the server

    bash
    claude mcp add --transport http calendar-bridge https://calendarbridge.vercel.app/mcp
  2. Verify it's connected

    bash
    claude mcp list
  3. Sharing it with your team?

    Add `--scope project` to write it to .mcp.json in the repository root, which you can commit (with the secrets left as environment variables).

  4. Use it in a session

    Ask Claude to use the tools this server exposes. It discovers them automatically.

What tools does calendar-bridge expose?

This server requires credentials before it will list its tools, so we cannot enumerate them here. Connect it in your client to see what it offers.

What the code can do

This is a remote server — nothing is installed or run on your machine, so there is no local code to analyze. What it can reach is described above: your requests go to the provider's host.

Before you install

Signals gathered from the source repo and package registry — not a safety verdict.

What it can reach

  • Third-party hosted service — Your requests and any data in them are sent to calendarbridge.vercel.app.
  • No local execution — Nothing is installed or run on your machine.
  • Last commit 4 days ago — Actively maintained.
  • 0 GitHub stars — Very little community usage so far.

Client compatibility

Claude Code: NativeClaude Desktop: Via mcp-remoteCursor: NativeCodex CLI: Via mcp-remoteWindsurf: NativeCline: NativeVS Code: Native

Health score

B · 68

Maintenance, adoption, transparency and packaging — not a safety audit. How this is calculated

  • Maintenance30%100%

    Last commit 4 days ago.

  • Adoption20%0%

    0 stars.

  • Transparency20%75%

    3/4: ✓ public source repo, ✓ declared license, ✓ documentation, ✗ discoverable tool list.

  • Provenance15%75%

    Links to its own repository; package linkage unverified.

  • Packaging15%75%

    Remote endpoint; authentication requirements not declared.

Documentation

Full README

📅 CalendarBridge

Your Apple Calendar, in ChatGPT — on your own Mac.

CalendarBridge is a Model Context Protocol (MCP) connector that lets ChatGPT work with your Apple Calendar. Reads execute locally and requested results pass through the authenticated relay — every action runs on your own Mac through a tiny local agent. The cloud piece is only a stateless relay that shuttles requests between ChatGPT and your Mac.

text
  ChatGPT  ──OAuth──►  CalendarBridge relay  ──job queue──►  calendar-agent  ──►  Calendar.app
 (connector)          (Vercel, stateless)      (your Mac, polls & executes)     (on your Mac)

Your Mac is the only place your events are ever read or written. The relay stores only short-lived job payloads and your account record; it never sees an event unless a job is in flight, and jobs expire in seconds.


For users — 3 steps

1. Create your account at [calendarbridge.vercel.app](https://calendarbridge.vercel.app) and generate a pairing code.

2. Install the Mac agent (needs Node 18+):

bash
npx calendar-agent pair <YOUR-CODE>   # link this Mac to your account
npx calendar-agent install            # keep it running on every restart

The first time it touches Calendar, macOS asks "Terminal wants to control Calendar" — click OK (one time).

3. Connect ChatGPT: Settings → Plugins → turn on Developer mode (Security & login) → Create a custom plugin → paste the MCP Server URL `https://calendarbridge.vercel.app/mcp` → Authentication OAuth → sign in & Allow.

That's it. In a new chat: *"Search my Apple Calendar for the dentist appointment"* or *"Add a Team Standup to my Work calendar tomorrow at 9am."*

Your Mac must be awake with the agent running. npx calendar-agent install makes it start automatically at login and restart if it ever crashes.

Excerpt — the full document is on GitHub.

Maintain calendar-bridge? Add a badge to your README

Shows its health grade, and links readers to install steps for every client.

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