WebMCP is an experimental open standard that lets web apps expose tools that agents can use directly on the page, helping them complete tasks faster and more reliably.
OpenAI has teamed up with Google Chrome, Cloudflare, Shopify, Vercel, Render, and Netlify for a 10-day hackathon.
Curious what new experiences WebMCP enables? Explore the WebMCP demo showcase for inspiration.
Up for grabs: $35,000 in cash prizes, Codex Micros, ChatGPT Pro subscriptions, and more prizes from the challenge supporters.
Build a web experience we haven’t seen before using WebMCP. You can start from scratch or add WebMCP to a site you already have.
Submission deadline:2026-09-04T00:00:00Z
We’ll announce 10 winning projects on September 23.
Support for WebMCP is also being added to the ChatGPT desktop app’s built-in browser and ChatGPT Sites. When you visit a compatible website, ChatGPT or Codex can automatically use it to complete your task.
Update to the latest version of the ChatGPT desktop app, then ask Codex to create a WebMCP-enabled app and deploy it to Sites.
Must make a three minute video presentation, besides the text description and the live code and full code base
10 top judged teams win equally-distributed prizes: $3000 + various credits across multiple provider’s services, then a distribution of some extra perks for 2+3 team members besides the main award going to the project representative. (maximize prize profit with three team members).
The $3000 OpenAI cash might start to offset the tax burden of the remaining service-usage value prizes added in. $18480 value + ($1500 to $2700 depending on team head count claimed) and unknown “swag” value. There is strange arbitrary language “$500 in cash prizes from Netlify” that is under “per winner” (but might be total) when it should just be “You get $500 cash if you are a winner”.
Conclusion after 20 minutes of “Pro” doing research:
They don’t say what value will be cut in a 1099 - or if you can refuse the service credits to not be taxed on them (like $10000 of Cloudflare)
The IRS says a prize that is refused is not included in income, but the public challenge rules do not establish whether a winner may decline only selected components.
So I hope that a tweet with the nine other winners has thousands of dollars of value for you…
