> ## Documentation Index
> Fetch the complete documentation index at: https://docs.0mcp.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Claude Code

> Connect your published 0mcp server to Claude Code.

## Before you begin

Publish a server version, then open **Setup** in 0mcp and select **Claude Code**. The page creates a command for your server and its authentication needs.

<Steps>
  <Step title="Choose a scope">Use project scope to share the server through `.mcp.json`. Use user scope to make it available across your own projects.</Step>
  <Step title="Set credentials">Set each environment variable listed by 0mcp. Keep its value out of source control.</Step>
  <Step title="Run the command">Copy and run the generated Claude Code CLI command.</Step>
  <Step title="Approve the server">Start Claude Code, enter `/mcp`, and approve the new connection.</Step>
</Steps>

If you edit configuration by hand, use the exact server URL, header names, and environment variable names from Setup. Reconnect after any change.

<Warning>
  Keep credential values out of `.mcp.json` and source control. Use the environment variables shown on the Setup page.
</Warning>

See [Tool discovery problems](/troubleshooting/tool-discovery-problems) if the server connects but tools are missing.