Watch the agent work, then review it. A relay shows its calls live, a driver checks the app, a reader compares two runs. Your coding agent. mcpsnoop. agent-device. Its logs. MCP servers. Your app. tracecrate. Your coding agent → mcpsnoop (calls). Your coding agent → agent-device (drives). Your coding agent → Its logs (writes). mcpsnoop → MCP servers (passes as is). agent-device → Your app (taps, reads). Its logs → tracecrate (reads, compares).
