Leftoff for ChatGPT

com.getleftoff/leftoff

Project memory for every AI. Pick up where you left off in Claude, ChatGPT or Cursor, with a team.

client:ChatGPT transport:streamable-http

Install Leftoff in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://getleftoff.com/mcp

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