API and MCP

ACP

ACP is the editor-facing JSON-RPC protocol. Start sigit with stdin connected to a client to use ACP mode; stdout carries protocol messages and logs go to stderr.

MCP

siGit Code discovers MCP servers at startup from global and project-local mcp.toml files. HTTP and stdio transports are supported. Tools are exposed to the model with names such as mcp__server__tool and execute through the same permission policy as native tools.

The official siGit MCP endpoint is available to signed-in cloud sessions. Set SIGIT_MCP=off when a deployment must not use MCP.