Hey there! Celine from the Figma Community Support team here. Thanks for flagging this, the DCR/CIMD error you're seeing happens because Gumloop isn't currently on our list of approved MCP clients.
Here's what you can do: please fill out this form to request Gumloop's access to the Figma MCP catalog: Figma Remote MCP Server Access Request
At the moment, we've paused adding new MCP clients while we continue to build a strong and scalable foundation for all partners. Real-world customer demand is very impactful and can significantly strengthen the case for adding a client, so submitting the form is the most useful thing you can do right now. Thanks for your patience!