# MCP-B/WebMCP

- **Event:** [OpenAI GPT-5 Startup Hackathon](https://cerebralvalley.ai/e/gpt5)
- **When:** Aug 9 at 10:00 AM – Aug 10 at 5:00 PM (PDT)
- **Where:** Location TBA
- **Team:** [Alex Nahas](https://cerebralvalley.ai/u/alexnahas)
- **GitHub:** https://github.com/MiguelsPizza/WebMCP/pull/29/files
- **Demo video:** https://screen.studio/share/gz2iCVOF
- **Gallery:** https://cerebralvalley.ai/e/gpt5/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/gpt5/hackathon/gallery/58

A feature which let's an AI develop and inject MCP servers into  webpages as  userscripts. This MCP server can then be used by GPT-5 via the mcp-b chrome extension.

I built the userscript repo which the cursor gpt-5 agent can use to test it's userscript script webmcp server. Then i built out the bridge to let the agent upload the script to the extension so the extension agent can use the tools for that website

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Markdown version of https://cerebralvalley.ai/e/gpt5/hackathon/gallery/58. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt