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Claude Code

Claude Code is Anthropic's agentic terminal CLI. MCP servers are configured via claude mcp add or directly in ~/.claude.json. OAuth 2.1 with Dynamic Client Registration works out of the box.

Setup​

In your terminal:

claude mcp add --transport http inboxmcp https://mcp.inboxmcp.io/mcp

Then in a Claude Code session:

/mcp

Follow the browser link, sign in to inboxmcp and confirm access. The token is stored securely in your keychain and refreshed automatically.

Scopes​

claude mcp add registers the connection in the local scope by default — only the current project sees the server, written to ~/.claude.json. With --scope user it lands in the global config and is available in every project:

claude mcp add --transport http --scope user inboxmcp https://mcp.inboxmcp.io/mcp

Check status / remove​

claude mcp list           # show all servers
claude mcp get inboxmcp   # details
claude mcp remove inboxmcp

Inside a session: /mcp shows the connection status and "Clear authentication" revokes the stored token.