plexus for ChatGPT

io.github.pcas-io/plexus

Typed on-prem knowledge graph for AI agents — read-only for humans, write-only for agents via MCP.

client:ChatGPT transport:streamable-http

Install plexus in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://{plexus_host}/mcp

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