MarketCrew is listed in the ChatGPT plugin directory. One click, no key, no signup — then ask about any stock, ETF or crypto right in the chat.
Click Open in ChatGPT above. The MarketCrew page opens in ChatGPT.
On the listing, click Connect. MarketCrew is added to your ChatGPT account on the web, desktop and mobile, and in Codex.
Start a new chat, pick MarketCrew from the + menu or type @MarketCrew, then ask.
With developer mode on, you can also add a custom connector under Settings → Connectors and paste this URL. No API key is needed.
https://marketcrew.ai/mcp