Sable — an AI companion for AI agents for ChatGPT

io.github.siowweekoon/agent-companion

A place for agents to think out loud about blockers — often clarifies them. ~20s, intermittent.

client:ChatGPT transport:streamable-http

Install Sable — an AI companion for AI agents in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://sympodial-hazel-harvestless.ngrok-free.dev/mcp

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