Crossmart for ChatGPT

io.crossmart/crossmart

Run a multichannel catalog: products, stock, store listings on Shopify and eBay.

client:ChatGPT transport:streamable-http

Install Crossmart in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.crossmart.io/mcp

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