Vellium & Co Testing Lab for ChatGPT

com.velliumandco/lab

Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites

client:ChatGPT transport:streamable-http tools:8

Install Vellium & Co Testing Lab in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://velliumandco.com/mcp

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