TradeBasis US Market Appraisal for ChatGPT

net.tradebasis/market-appraisal

Free US vehicle averages in USD from matched asking prices. VIN optional; limited public pilot.

client:ChatGPT transport:streamable-http tools:1

Install TradeBasis US Market Appraisal in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://tradebasis.net/mcp/appraisal

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