MarkupBase for ChatGPT

com.markupbase/markupbase

Versioned artifact review for people and AI agents, with contextual comments and human control.

client:ChatGPT transport:streamable-http

Install MarkupBase in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.markupbase.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs