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Build for Production

Build your app for production using the Sunpeak CLI: 
sunpeak build
This generates optimized JavaScript bundles in your dist/ directory. Each resource gets its own bundle file that can be served by your MCP server.

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Publish to ChatGPT

Publish your MCP App to ChatGPT via the OpenAI Platform.

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Prerequisites

  • A ChatGPT App created on the OpenAI Platform
  • Your MCP server configured and accessible to ChatGPT
  • Built resources (run sunpeak build)

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Serving Resources

Your production MCP server needs to serve the built resource bundles. The resources should be accessible via HTTP(S) URLs that ChatGPT can fetch. Example server setup: 
import { readFileSync, readdirSync } from 'fs';
import { join } from 'path';

// Load all built resources
const distDir = './dist';
const files = readdirSync(distDir).filter(f => f.endsWith('.js'));

const resources = files.map(file => {
  const name = file.replace('.js', '');
  const bundle = readFileSync(join(distDir, file), 'utf-8');
  return { name, bundle };
});

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Environment Variables

Configure your production environment:
  • Set appropriate CSP (Content Security Policy) for your resources
  • Configure CORS if serving from a different domain
  • Set up HTTPS for secure communication
See the MCP Server guide for more details on setting up your production MCP server.