That sounds like the request isn't even reaching the API, so I'd start by checking whether the Vercel endpoint is accessible outside the tool first. If it works in Postman/cURL but fails only inside the tool, it's likely a CORS, authentication, or network allowlist issue. Since the Vercel bypass token didn't help, I'd also verify the deployment protection settings, confirm the API route is publicly reachable, and inspect the server logs on Vercel to see if the requests are arriving at all. If you'd like, I can help troubleshoot the endpoint, request headers, and tool configuration step by step. @SID