CrewButton for ChatGPT

com.crewbutton/crewbutton

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client:ChatGPT transport:streamable-http tools:3

Install CrewButton in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://quotes.crewbutton.com/assistant-mcp

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