diff --git a/src/main.ts b/src/main.ts
index b4827603..bc215493 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -958,4 +958,14 @@ program
     await runAgyStatusLineHook()
   })
 
+program
+  .command('mcp')
+  .description('Run a Model Context Protocol server (stdio) exposing usage + savings to AI agents')
+  .action(async () => {
+    // stdout MUST carry only JSON-RPC; route stray logs to stderr.
+    console.log = ((...args: unknown[]) => process.stderr.write(args.join(' ') + '\n')) as typeof console.log
+    const { startStdioServer } = await import('./mcp/server.js')
+    await startStdioServer(version)
+  })
+
 program.parse()