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.
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
Add the server
bashclaude mcp add --transport http calendar-bridge https://calendarbridge.vercel.app/mcpVerify it's connected
bashclaude mcp listSharing 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).
Use it in a session
Ask Claude to use the tools this server exposes. It discovers them automatically.
How to install calendar-bridge in Claude DesktopDesktop app (MCP config)
Open your MCP config
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json
Add this server
json{ "mcpServers": { "calendar-bridge": { "command": "npx", "args": [ "-y", "mcp-remote", "https://calendarbridge.vercel.app/mcp" ] } } }Why the wrapper?
This is a remote (HTTP) server and Claude Desktop only launches local processes, so mcp-remote proxies the connection. It will open a browser window if the server needs OAuth.
Restart Claude Desktop
The tools appear under the 🔌 menu once the app reloads.
How to install calendar-bridge in CursorAI-first code editor
Create / edit .cursor/mcp.json in your project
json{ "mcpServers": { "calendar-bridge": { "url": "https://calendarbridge.vercel.app/mcp" } } }Enable it
Cursor Settings → MCP → toggle the server on. Tools become available to the Composer/Agent.
How to install calendar-bridge in Codex CLIOpenAI coding agent
Add to ~/.codex/config.toml
toml[mcp_servers.calendar-bridge] command = "npx" args = ["-y", "mcp-remote", "https://calendarbridge.vercel.app/mcp"]Why the wrapper?
Codex runs MCP servers as local processes, so mcp-remote bridges this HTTP endpoint to stdio.
Run Codex
Codex loads MCP servers from config.toml on startup and exposes their tools to the agent.
How to install calendar-bridge in WindsurfCodeium's agentic IDE
Edit ~/.codeium/windsurf/mcp_config.json
json{ "mcpServers": { "calendar-bridge": { "serverUrl": "https://calendarbridge.vercel.app/mcp" } } }Reload
Windsurf → Cascade → refresh MCP servers. Cascade can now call the tools.
How to install calendar-bridge in ClineVS Code autonomous agent
Open Cline → MCP Servers → Configure
Adds to cline_mcp_settings.json.
Add the server
json{ "mcpServers": { "calendar-bridge": { "type": "streamableHttp", "url": "https://calendarbridge.vercel.app/mcp" } } }
How to install calendar-bridge in VS CodeCopilot / MCP support
Create .vscode/mcp.json
json{ "servers": { "calendar-bridge": { "type": "http", "url": "https://calendarbridge.vercel.app/mcp" } } }Start it
VS Code shows a ▶ Start action above the server entry. Agent mode (Copilot Chat) can then use the tools.
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
Health score
B · 68Maintenance, 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.
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+):
npx calendar-agent pair <YOUR-CODE> # link this Mac to your account
npx calendar-agent install # keep it running on every restartThe 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.
Alternatives to calendar-bridge
- Agent-Native CalendarA · 88Agent-Native Google Calendar - manage events, sync, and public booking
- Agent GuildB · 79See and steer Claude Code, Codex, Antigravity, Grok, Docker Agent and shell sessions in Agent Guild.
- icloud-calendarA · 84Manage Apple iCloud Calendar through a reliable CalDAV MCP server.
- ms-calendar-mcpB · 70Microsoft Calendar (Outlook Calendar) MCP server for managing events via Microsoft Graph.
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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