You’re likely close I’ve seen this exact behavior when the router conditions or tool schema don’t fully resolve, so Retell never actually fires the tool call to n8n. It’s usually something subtle (payload shape, router exit path, or tool permissions). If you want, I’m happy to take a quick look at how your router is deciding and how the tool is defined on the Retell side shouldn’t take long to pinpoint why it’s not triggering n8n.