#!/usr/bin/env node
/**
* Node.js wrapper for Google Automation MCP server
* Spawns the Python MCP server and pipes stdio for MCP communication
*/
import { spawn } from "child_process";
import { platform } from "os";
const isWindows = platform() === "win32";
/**
* Try to spawn the MCP server using various methods
*/
function trySpawnServer() {
// Methods to try in order of preference
const methods = [
// 1. uvx (recommended - handles venv automatically)
{ cmd: "uvx", args: ["google-automation-mcp"] },
// 2. pipx run
{ cmd: "pipx", args: ["run", "google-automation-mcp"] },
// 3. Direct command (if installed globally or in PATH)
{ cmd: "google-automation-mcp", args: [] },
// 4. Python module
{ cmd: "python3", args: ["-m", "google_automation_mcp"] },
{ cmd: "python", args: ["-m", "google_automation_mcp"] },
];
for (const method of methods) {
try {
const proc = spawn(method.cmd, method.args, {
stdio: ["pipe", "pipe", "pipe"],
shell: isWindows,
env: {
...process.env,
PYTHONUNBUFFERED: "1",
},
});
// Check if spawn succeeded by waiting briefly for early errors
let spawnFailed = false;
proc.on("error", () => {
spawnFailed = true;
});
// Give it a moment to fail if command doesn't exist
if (!spawnFailed && proc.pid) {
return proc;
}
} catch {
// Try next method
continue;
}
}
return null;
}
/**
* Main entry point
*/
function main() {
const server = trySpawnServer();
if (!server) {
const errorMsg = JSON.stringify({
jsonrpc: "2.0",
error: {
code: -32603,
message:
"Failed to start Google Automation MCP server. Please install it with: pip install google-automation-mcp",
},
id: null,
});
process.stdout.write(errorMsg + "\n");
process.exit(1);
}
// Pipe stdin to server
process.stdin.pipe(server.stdin);
// Pipe server stdout to our stdout (MCP messages)
server.stdout.pipe(process.stdout);
// Forward stderr for debugging
server.stderr.on("data", (data) => {
process.stderr.write(data);
});
// Handle server exit
server.on("close", (code) => {
process.exit(code ?? 0);
});
// Handle our own exit
process.on("SIGINT", () => {
server.kill("SIGINT");
});
process.on("SIGTERM", () => {
server.kill("SIGTERM");
});
// Handle errors
server.on("error", (err) => {
const errorMsg = JSON.stringify({
jsonrpc: "2.0",
error: {
code: -32603,
message: `Server error: ${err.message}`,
},
id: null,
});
process.stdout.write(errorMsg + "\n");
process.exit(1);
});
}
main();
