Anthra for ChatGPT

com.anthra/anthra

Agentic AI book creator: plan, write, illustrate, narrate, and publish books from any MCP client.

client:ChatGPT transport:streamable-http

Install Anthra in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://anthra.com/api/mcp

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