Tool detail

generate-image

Generates an image from a text prompt using Google Gemini image generation and returns base64-encoded PNG.

Categories: Image generation

Use when

generate an image from a text description
create an image in a specific aspect ratio for a post or asset

Not for

not image editing of an existing image - use the sibling edit-image endpoint

Inputs

POST JSON body: { prompt: string 3-4096 chars (required), aspectRatio: enum of 10 ratios (optional, default 1:1) }

Admitted input schema

{
  "type": "object",
  "properties": {
    "aspectRatio": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "enum": [
        "1:1",
        "16:9",
        "9:16",
        "3:2",
        "2:3",
        "4:3",
        "3:4",
        "4:5",
        "5:4",
        "21:9"
      ],
      "description": "Output aspect ratio (default: 1:1)"
    },
    "prompt": {
      "type": "string",
      "minLength": 3,
      "maxLength": 4096,
      "description": "Text prompt describing the image to generate"
    }
  },
  "required": [
    "prompt"
  ],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://nanobanana-x402.fly.dev/api/generate-image

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://nanobanana-x402.fly.dev/api/generate-image
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z