OpenAI Developers opened a 10-day WebMCP Challenge with ChromiumDev, CloudflareDev, ShopifyDevs, Vercel, Render, and Netlify. Prizes include $35,000 in cash, Codex Micros, ChatGPT Pro subscriptions, and partner awards. WebMCP is an experimental open standard that lets websites expose page-level tools an agent can call. OpenAI is adding WebMCP support in the ChatGPT desktop app's built-in browser and on ChatGPT Sites, so ChatGPT or Codex can automatically use a compatible site to finish a task. Builders can start from scratch or add WebMCP to an existing site; submissions are due September 3 at 5pm PT, with 10 winners announced September 23. The practical developer loop is: update the ChatGPT desktop app, ask Codex to create a WebMCP-enabled app, and deploy it to Sites. For coding agents, this is a path from generic browser use toward typed, site-native tools instead of brittle DOM clicking.

Key Takeaways

  • ✓Partners include Chromium, Cloudflare, Shopify, Vercel, Render, and Netlify; prizes include $35,000 cash and Codex Micros.
  • ✓ChatGPT desktop browser and Sites gain WebMCP so Codex can call site-native tools automatically.
  • ✓Entries are due September 3 at 5pm PT, with 10 winners announced September 23.
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