The WebMCP Challenge

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Agent Developer tools AI coding

About this hackathon

A 10-day online challenge (Aug 25–Sep 4, 2026) run by OpenAI on Devpost: build a web app that exposes WebMCP tools so people and their AI agents can use it together, test it in ChatGPT's in-app browser or Chrome, and open-source the code. Over 7,000 registered. Ten winners each got $3,000 cash, a Codex Micro, a year of ChatGPT Pro, plus credits from Cloudflare, Vercel, Netlify, Render, Shopify and Google Chrome.

Status
Deadline: 2026-09-04
Starts: 2026-08-25
Who: Open to all (Legal age of majority; some countries/territories excluded; code must be open source)
Level: Intermediate
Prize: $35k · 10 winners each got $3,000 cash, a Codex Micro and a year of ChatGPT Pro, plus Cloudflare, Vercel and other credits (about $35K cash in total)
Size: —
Format: Online · International
Location: San Francisco (online; placed at organizer’s city)

Original listing (Chinese)

The full original listing below is in Chinese, as published in the Hack123 newsletter.

一句话简介：OpenAI 在 Devpost 上办的 10 天线上挑战赛，⁠‍‍‌‌‍‍‌‍‍‍‍‌‌‍‍‍‌‌‌‍‍‌‌‌⁠用新的开放标准 WebMCP 让网站直接把工具开放给 AI Agent，做一个人和 Agent 一起用、明显更好用的 Web 应用。

看点：作品要能在 ChatGPT 内置浏览器或开了 WebMCP 的 Chrome 里打开；需提交在线地址、3 分钟内演示视频和开源仓库；评委来自 OpenAI、Google Chrome、Cloudflare、Shopify、Vercel、Netlify；7,000 多人报名，近 2,500 份作品，9 月 28 日公布获奖名单

奖金：10 个获奖作品各得 3,000 美元现金、Codex Micro、一年 ChatGPT Pro，另有 Cloudflare、Vercel、Netlify 等平台额度

截止日期：2026年9月4日（作品提交截止）（线上）

活动日期：2026年8月25日—9月4日，已结束

Summarized from the organizer’s page and public posts. Please confirm details on the official site before registering.