[Python] Minimum working example of an MCP Server?

I have been playing around with browsermcp today and I can't manage to get a minimal working version in Python or NodeJS - i.e. something which will "Go to YouTube and search for "MCP servers" and hit enter.."

I have correctly got a working version of the MCP in cursor but for me it sometimes does not do what I want. I just want something which will replicate the cursor approach to using the MCP but programatically.

The MCP.json file for cursor is the following:

{
"mcpServers": {
"browsermcp": {
"command": "npx",
"args": ["@browsermcp/mcp@latest"]
}
}
}


Here is ChatGPT generated code I tried earlier but its garbage and does not work:

const { spawn } = require('child_process');

// You already confirmed this is correct on your system:
const npxPath = 'C:\\nvm4w\\nodejs\\npx.cmd';

// Use full path to cmd.exe for extra reliability
const cmdPath = 'C:\\Windows\\System32\\cmd.exe';

const browserMcp = spawn(cmdPath, ['/c', npxPath, '@browsermcp/mcp@latest'], {
stdio: ['pipe', 'pipe', 'pipe'], // All pipes so you can read/write if needed
windowsVerbatimArguments: true // Sometimes helps on Windows, can omit if not needed
});

// Handle stdout
browserMcp.stdout.on('data', (data) => {
console.log('[browsermcp stdout]:', data.toString());
});

// Handle stderr
browserMcp.stderr.on('data', (data) => {
console.error('[browsermcp stderr]:', data.toString());
});

// Handle process errors (like not found, spawn errors)
browserMcp.on('error', (err) => {
console.error('Failed to start browsermcp process:', err);
process.exit(1);
});

// Handle exit
browserMcp.on('close', (code) => {
console.log(`[browsermcp process exited with code ${code}]`);
});

// Example: Sending a command after a delay (as in your original script)
function sendCommand(command) {
console.log('[Sending to browsermcp]:', JSON.stringify(command));
browserMcp.stdin.write(JSON.stringify(command) + '\n');
}

async function automateBrowser() {
console.log('[Automation starting...]');
await new Promise(resolve => setTimeout(resolve, 8000)); // Wait for MCP to boot

sendCommand({
type: 'tool_code',
tool_name: 'browser_goto',
args: {
url: 'https://youtube.com/'
}
});

await new Promise(resolve => setTimeout(resolve, 10000)); // Wait for page to load

sendCommand({
type: 'tool_code',
tool_name: 'browser_type',
args: {
element: 'textarea[id="prompt-textarea"]',
text: 'generate an image of a dog',
submit: true
}
});
}

// Start automation
automateBrowser();

// Graceful shutdown on Ctrl+C
process.on('SIGINT', () => {
console.log('Ctrl+C detected. Terminating browsermcp process...');
if (browserMcp) {
browserMcp.kill('SIGINT');
}
process.exit();
});


It gave the impression it could work but the chrome browser does nothing...

[Sending to browsermcp]: {"type":"tool_code","tool_name":"browser_goto","args":{"url":"https://youtube.com/"}}
[Sending to browsermcp]: {"type":"tool_code","tool_name":"browser_type","args":{"element":"textarea[id=\"prompt-textarea\"]","text":"generate an image of a dog","submit":true}}

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