polymnemo for ChatGPT

io.github.pcbz/polymnemo

Shared cross-LLM long-term memory over MCP: semantic recall, sessions, and media (pgvector).

client:ChatGPT transport:streamable-http

Install polymnemo in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://polymnemo.purpleground-26f6d744.westus2.azurecontainerapps.io/mcp

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