Chat

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://opendunes.com/api/v1",
  apiKey: process.env.OPENDUNES_API_KEY,
});

const resp = await client.chat.completions.create({
  model: "google/gemini-2.5-pro",
  messages: [
    { role: "system", content: "You are a helpful assistant." },
    { role: "user", content: "What is the capital of Algeria?" },
  ],
  max_tokens: 256,
  temperature: 0.7,
});

console.log(resp.choices[0].message.content);
// Estimated cost in micro-DA visible in X-Balance-Available response header

const stream = await client.chat.completions.create({
  model: "anthropic/claude-opus-4.8",
  messages: [{ role: "user", content: "Explain tifinagh script in two sentences." }],
  stream: true,
});

for await (const chunk of stream) {
  const delta = chunk.choices[0]?.delta?.content ?? "";
  process.stdout.write(delta);
}
// The final chunk carries usage: prompt_tokens + completion_tokens

{
  role: "user",
  content: [
    { type: "text", text: "What is in this image?" },
    { type: "image_url", image_url: { url: "https://example.com/photo.jpg" } },
  ],
}

import OpenAI, { APIError } from "openai";

try {
  const resp = await client.chat.completions.create({ ... });
} catch (err) {
  if (err instanceof APIError) {
    const body = err.error as { error: string; message: string };
    if (body.error === "insufficient_credits") {
      // Redirect the user to deposit DA at /dashboard/billing
    }
    if (err.status === 429) {
      // Respect Retry-After before retrying
    }
  }
}