OttoQuest for ChatGPT

com.ottoquest/mcp

Search US used-car listings and market values, look up VINs and recalls, and manage deal alerts.

client:ChatGPT transport:streamable-http

Install OttoQuest in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://ottoquest.com/api/mcp

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