Coolant for ChatGPT

run.coolant/coolant

Instruments for what a model cannot know on its own: time, randomness, DNS, hashes, receipts.

client:ChatGPT transport:streamable-http tools:28

Install Coolant in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://coolant.run/mcp

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