MCP servers · Gmail · MCP server + skill
Connect Claude Code to Gmail
One line gives Claude Code your Gmail account as tools: 13 endpoints, messages, drafts, labels, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.
Three steps
- Create a free 0n3 account and connect Gmail. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
- Ask Claude Code: whoami. Then: "List messages in Gmail".
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"
The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.
What Claude Code can then do in Gmail
Messages · Read, search, and manage messages5
List messages
GET /users/me/messagesGet a message
GET /users/me/messages/{messageId}Send a message
POST /users/me/messages/sendTrash message
POST /users/me/messages/{messageId}/trashUntrash message
POST /users/me/messages/{messageId}/untrashDrafts · Create and manage drafts3
Create a draft
POST /users/me/draftsList drafts
GET /users/me/draftsSend a draft
POST /users/me/drafts/sendLabels · Organize with labels2
List labels
GET /users/me/labelsCreate a label
POST /users/me/labelsThreads · View conversation threads2
List threads
GET /users/me/threadsGet a thread
GET /users/me/threads/{threadId}Send email · Send emails0
Send emails
More · Everything else this app exposes.1
Get a profile
GET /users/me/profileGmail in other AI clients
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