Your apps, in every AI you use.
A free personal Arc0 MCP URL. Connect Gmail, Slack, GitHub and more once, then use them from Claude, ChatGPT, Cursor or Claude Code, with each assistant limited to what you allow.
Three steps, then it just works everywhere.
Sign in to Gmail, Slack, GitHub, Linear and the rest one time, in your Arc0 account.
Add your Arc0 MCP URL to Claude, ChatGPT, Cursor or Claude Code. No per-app setup in each assistant.
Let Cursor read GitHub but not write. Let Claude send email but never delete it. Change it any time.
Each assistant gets only what you allow.
Claude
GmailRead + send
LinearRead + write
GitHubNo access
GitHub
Cursor
CursorGitHubRead onlyLinearRead + writeGmailNo access# Claude Code $ claude mcp add --transport http arc0 \ https://mcp.arc0.ai/u/you # Cursor · ~/.cursor/mcp.json { "mcpServers": { "arc0": { "url": "https://mcp.arc0.ai/u/you" } } } # Claude or ChatGPT Add a custom connector with the same URL.
Questions, answered.
Is it really free?
Yes, for personal use. Arc0 makes money from companies that build agents on it, not from individuals connecting their own apps.
Which assistants does it work with?
Any client that supports remote MCP servers, including Claude, ChatGPT, Cursor, Claude Code, Codex and VS Code.
Can an assistant see my passwords or tokens?
No. Arc0 makes the call on the assistant’s behalf and returns only the result. Your credentials never reach the assistant or the model.
How is this different from each assistant’s own connectors?
Built-in connectors live inside one assistant. Your Arc0 connections work across all of them, with one place to see what each can do and what each did.
Get your Arc0 MCP URL.
Connect your apps once and add one URL to Claude, ChatGPT, Cursor or Claude Code. Each assistant only gets what you allow.
Free for personal use