Node.js Fetch

Reviewed by Proof · Updated

Definition

Node.js has a built-in fetch function that can call luv13's OpenAI-compatible API with no extra packages.

Key takeaways

  • fetch is built into Node.js 18 and later, so there's nothing to install.
  • A chat call is one POST to https://api.luv13.ai/v1/chat/completions with a JSON body.
  • Put your key in an Authorization: Bearer header, read from process.env.
  • fetch doesn't throw on HTTP errors. Check res.ok yourself.
  • Use AbortSignal.timeout() to stop a request that takes too long.

Example

Save this as chat.mjs and run node chat.mjs.

const res = await fetch("https://api.luv13.ai/v1/chat/completions", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.LUV13_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "luv13/glm-5.3-flash",
    messages: [{ role: "user", content: "Name one planet." }],
  }),
  signal: AbortSignal.timeout(60_000),
});

if (!res.ok) {
  throw new Error(`luv13 returned ${res.status}: ${await res.text()}`);
}
const data = await res.json();
console.log(data.choices[0].message.content);

Notes

  • Keep this on the server. Calling luv13 from browser code would expose your key to anyone who opens the page. See API Key Best Practices.
  • For retries, types and streaming helpers, the OpenAI SDKs may be easier.
  • For reading a streamed reply, see Server-Sent Events.

For a short luv13-only version of this example, see JavaScript Example.