Nano Banana Pro APIfor developers.

const apiKey = process.env.IMAROUTER_API_KEY;

async function createNanoBananaEdit() {
  const createResponse = await fetch("https://api.imarouter.com/v1/image/nano-banana-pro/compose", {
    method: "POST",
    headers: {
      "Authorization": `Bearer ${apiKey}`,
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      prompt: "Place the sofa from image 2 into image 1 and blend the shadows, perspective, and room lighting naturally. Keep the wall texture and floor reflection realistic.",
      images: [
        "https://example.com/room.jpg",
        "https://example.com/sofa.png"
      ],
      aspectRatio: "4:3",
      resolution: "2K",
      outputFormat: "png"
    })
  });

  const job = await createResponse.json();

  let status = "queued";
  while (status !== "completed") {
    await new Promise((resolve) => setTimeout(resolve, 3000));

    const statusResponse = await fetch(`https://api.imarouter.com/v1/jobs/${job.id}`, {
      headers: {
        "Authorization": `Bearer ${apiKey}`
      }
    });

    const jobState = await statusResponse.json();
    status = jobState.status;

    if (status === "failed") {
      throw new Error(jobState.error ?? "Nano Banana Pro edit failed");
    }

    if (status === "completed") {
      return jobState.output[0].url;
    }
  }
}