OpenAI SDK (JS) with idapt

The canonical three-line diff: baseURL, key, model id.

Last reviewed 2026-07-17

Install

bash

npm i openai

Point it at idapt

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://idapt.app/api/openai/v1",
  apiKey: process.env.IDAPT_API_KEY,
});

const reply = await client.chat.completions.create({
  model: "deepseek/deepseek-v4-flash",
  messages: [{ role: "user", content: "Three facts about ravens." }],
});

Streaming

const stream = await client.chat.completions.create({
  model: "deepseek/deepseek-v4-flash",
  messages: [{ role: "user", content: "Stream a haiku." }],
  stream: true,
});
for await (const part of stream) {
  process.stdout.write(part.choices[0]?.delta?.content ?? "");
}

Pitfalls

Everything else stays the same

Responses, embeddings, images, and audio ride the same compatible surface; only the base URL and model ids change.

References

More quickstarts

OpenAI SDK (Python)Vercel AI SDK curl