Vapi Agent API Tool Call Failing with "fetch failed"

Hey everyone,

I’m working on a Vapi agent that uses an API call tool to send data to n8n. But whenever the agent calls the tool, I’m getting this error:

{

"message": "fetch failed",

"stack": "TypeError: fetch failed

at node:internal/deps/undici/undici:13178:13

at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

at async apiRequestToolCallFulfill (/app/dist...

}

Has anyone run into this issue before? Could it be related to how I’m structuring the request, the endpoint URL, or maybe CORS/network restrictions?

Any guidance or examples of a working setup would be super helpful 🙏

Thanks in advance!

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