Raycast MCP Setup on Mac
Use your Mac apps from Raycast AI — Mail, Calendar, Contacts, iMessage, Teams, Slack and 233 tools through one local MCP server. Everything runs on your Mac; no API keys, no OAuth.
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LMCP··5 min readWhat this lets you do
Raycast supports MCP servers in Raycast AI, so the assistant you summon with a hotkey can act on your real apps through LMCP:
- “What’s on my calendar this afternoon?”
- “Summarize my unread email”
- “Find the iMessage where Ana sent the address”
Setup
- Download LMCP and open it (menu bar). It runs the MCP server locally.
- In Raycast, open the “Manage MCP Servers” command and add a server: type stdio, command
npx, argumentlocal-mcp. (The npx client is a thin proxy that connects to the LMCP app on your Mac.) - Open Raycast AI and mention the LMCP tools — ask about your Mail, Calendar or Teams. macOS prompts for each permission the first time it’s needed.
Privacy
Raycast talks to LMCP over a local socket on your Mac. Your data is read on-device and never uploaded; anything the AI wants to send is preview-and-confirm.