Agent Builder MCP bug, works in cloudflare's playground: https://playground.ai.cloudflare.com/

[walt_X]

Hey Team, I got an error when build agent builder and connect a MCP.

For this mcp: “https:// cardpilot-remote-mcp-server. mcps.workers.dev/sse” I was able to test and get the response in claudeflare’s play ground: “https:// playground.ai.cloudflare .com/”
Note this mcp host in claudeflare.

But in agent builder: it shows “Unable to load tools for this server. Check your configuration and try again.“ (no Authentication required)

[darren5]

I have exactly the same problem… Plus my existing Agent kits which use these MCP servers have all gone offline!

The Agent is querying the MCP server, and there no errors at our end on the log!

To test the MCP servers are working, I’ve added them to my Claude desktop, and they work perfectly!