A 404 from an SDK call does not tell you which URL the SDK actually requested. Before changing keys, models, or retry settings, it helps to isolate one smaller question: what path did the client send? This tutorial runs the OpenAI Node SDK against a tiny HTTP server on your own machine.

Source: [Dev.to](https://dev.to/cmzz/debugging-openai-node-sdk-baseurl-capture-the-request-before-chasing-a-404-3d4k)

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