Register a Server

Once the daemon is running, you can register upstream MCP servers with the coffer mcp add command. Registered servers are immediately available to any connected client through the shim.

Quickstart

Register your first MCP server — using @modelcontextprotocol/server-filesystem as the example:

coffer mcp add filesystem \
  --stdio "npx -y @modelcontextprotocol/server-filesystem /tmp"

coffer mcp list                   # → filesystem  | stdio | enabled
coffer mcp tool list filesystem   # → read_file, write_file, list_directory, …

• coffer mcp add registers the server and stores its transport configuration. The --stdio flag tells Coffer to launch the server as a subprocess using the given command.
• coffer mcp list shows all registered servers and their current status.
• coffer mcp tool list <name> queries the live server and lists the tools it exposes.

The server name (filesystem in this example) becomes the namespace prefix that clients use to call its tools — for example, filesystem__read_file.

Connect a client →