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chainmail mcp

Serve chainmail's tools to an AI agent over the Model Context Protocol.

The agent's MCP client starts this command and speaks MCP on stdin and stdout. Diagnostics go to stderr. Calls go to the daemon at --socket, then $CHAINMAIL_SOCKET, then cli.toml, then the default socket, and the audit log records them with client kind mcp. The command starts and lists its tools even when the daemon is down; calls then fail with DAEMON_UNREACHABLE.

Register it with Claude Code:

claude mcp add --scope user chainmail -- /run/current-system/sw/bin/chainmail mcp

Usage​

chainmail mcp

Examples​

# configure your agent to run this command over stdio
chainmail mcp

Global flags​

      --output string   output format: json or table (default $CHAINMAIL_OUTPUT, then cli.toml, then table on a terminal, json otherwise)
      --socket string   daemon socket (default $CHAINMAIL_SOCKET, then cli.toml, then /run/chainmail/chainmail.sock)

See also​