Purgatorium (p9m) for ChatGPT

io.github.p9m-team/p9m

Self-hosted Docker sandboxes for agents: create one, deploy a compose stack, read its files and URLs

client:ChatGPT transport:streamable-http

Install Purgatorium (p9m) in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://{purgatorium_host}/mcp

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