Getting Started with Nano Banana Pro API

Nano Banana Pro API is a practical, production-ready interface for generating images with the latest Gemini-based models. This Nano Banana Pro API guide focuses on real-world usage: how to craft prompts, structure requests, interpret responses, and build a workflow your product can rely on.

If you want the official Nano Banana 2 overview, demos, and product context, start with the Nano Banana 2 hub.

What is Nano Banana Pro API?

Nano Banana Pro API gives you a simple REST interface for high-quality image generation. You send a prompt and optional references, and receive image outputs you can store and ship in your app. It is designed for teams that need consistent results, repeatable workflows, and predictable integration patterns.

When to Use Nano Banana Pro API

Use Nano Banana Pro API when you want fast, on-demand visuals without building an in-house model pipeline:

• Marketing content for ads and landing pages
• Product imagery for catalogs and ecommerce listings
• Creative drafts for early concepts and mood boards

Core Capabilities

The API is built around a few core strengths that matter in production:

• Text-to-image generation to turn natural language into visuals
• Image-to-image creation for remixing or building on existing shots
• Reference-aware outputs to keep style and subject consistent
• Scalable performance to power batch jobs and automated workflows

Nano Banana Pro API Quick Start

1. Get Access

Create an account in the EvoLink dashboard, then generate an API key for your project. Keep the key in a secure secret store and never expose it in client-side code.

2. Make Your First Request

Here is a minimal cURL example. Replace placeholders with your actual values.

curl -X POST "API_BASE/v1/images/generations" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "MODEL_NAME",
    "prompt": "A beautiful sunset over mountains, digital art style",
    "size": "ASPECT_RATIO",
    "quality": "RESOLUTION_TIER"
  }'

3. Handle the Response

The response usually includes metadata and a list of image URLs or IDs. Persist the results quickly and store them in your own storage layer for long-term access.

{
  "created": 1737014400,
  "data": [
    {
      "url": "IMAGE_URL"
    }
  ]
}

Core Parameters You Should Know

These are the parameters you will use most often when calling the Nano Banana Pro API:

• model: Use the model enabled for your account. Pick a cost-effective tier for drafts and a premium tier for final assets.
• prompt: Your instruction text. Be explicit about subject, style, and mood.
• size: The aspect ratio or size preset that fits your placement (square, portrait, or landscape).
• quality: The resolution tier you need for the final output.
• image_urls: Optional reference images if you want to keep subject or style consistent.

Async Jobs and Image URLs

Many teams run the API asynchronously: submit a job, poll the task until it finishes, then download and store the image. URLs can be time-limited, so treat them as short-lived and move them into your own storage as soon as they are ready.

Prompt Playbook

The fastest way to improve results is to use a clear prompt structure. A simple formula works well:

Subject + Context + Style + Lighting + Composition + Quality

Here are more practical prompt tips:

1. Be specific - Name the subject and describe key details.
2. Define the style - Photorealistic, watercolor, cinematic, editorial.
3. Control composition - Close-up, wide shot, top-down, or centered.

Example Prompts

Quality Control and Iteration

Treat generation as a fast design loop. Start with a broad prompt, then iterate:

• Add or remove details based on the first output.
• Lock in a style before refining a subject.
• Save the best prompts so your team can reuse them later.
• Use reference images when consistency matters across a series.

Production Checklist

Use this checklist before you ship Nano Banana Pro API in your workflow:

• API key stored in a secure server-side secret store
• Base prompts documented for your main use cases
• Output images saved into permanent storage

Summary

Nano Banana Pro API is a reliable way to generate high-quality visuals with a clean REST interface. Start with clear prompts, iterate quickly, and document your best results. For teams shipping fast, this keeps creative output moving without heavy tooling.