mcp

MCP (Model Context Protocol) server for native agent integration

Authentication scope: fabric

serve

Start the MCP server (JSON-RPC 2.0 over stdin/stdout). Read-only by default: only non-mutating tools are exposed

fabio mcp serve

Flag	Type	Required	Description
--allow-write	bool	No	Expose mutation tools (create, update, delete, run, etc.). Without this flag, only read-only tools are visible
--allow-tool	string	No	Only expose tools matching these patterns (comma-separated). Patterns match tool name prefixes: “workspace” matches all workspace tools. Without this flag, all tools (subject to –allow-write) are exposed
--list-tools	bool	No	Print the list of tools that would be exposed, then exit. Useful for inspecting the effective tool surface before starting the server

Note

The server reads JSON-RPC messages from stdin and writes responses to stdout. Supports: initialize, tools/list, tools/call, ping.

Read-only · Returns void