Before you connect: MCP must be turned on for your workspace (Settings → Developer → MCP, by an account owner or super admin). You don't need an API key. More about requirements.
Run this in your terminal:
claude mcp add --transport http iclosed https://mcp.iclosed.io/mcpTo share the server with everyone working in a repository, add --scope project. Claude Code then writes it to .mcp.json at the repository root. The file holds only the URL, so it is safe to commit.
Start Claude Code, run /mcp, select iclosed and choose Authenticate. Your browser opens the iClosed consent screen. Sign in and click Allow access.
Ask: "Show me my contacts in iClosed." Claude Code should call an iClosed tool and answer from your workspace.
If something goes wrong, see Troubleshooting.