跳转到主要内容

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Endpoints

MethodEndpointDescription
POST/api/v1/generateTask/nano-banana-2Create generation task
GET/api/v1/statusTask/nano-banana-2Query task status

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Authentication

All requests require an API Key in the header: 
Authorization: Bearer YOUR_API_KEY

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Request Body

{
  "request_type": "async",
  "callback_url": "https://...",
  "provider": "auto",
  "input": {
    "mode": "text-to-image",
    "prompt": "...",
    "aspect_ratio": "16:9",
    "resolution": "2K",
    "image_urls": ["..."],
    "output_format": "png",
    "google_search": false
  }
}

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Parameters

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request_type
string
默认值:"async"
async (polling) or callback (webhook)
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callback_url
string
Callback URL, required when request_type=callback (conditional)
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provider
string
默认值:"auto"
Routing strategy: auto, value, or official
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input
object
必填
Model input parameters
Mode Options:
  • text-to-image — Generate from text description
  • image-to-image — Generate with reference images (up to 14)

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Example

Text-to-Image 
curl -X POST "https://api.apixo.ai/api/v1/generateTask/nano-banana-2" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "provider": "value",
    "input": {
      "mode": "text-to-image",
      "prompt": "a cozy cyberpunk cafe with neon lights and rain-soaked streets",
      "aspect_ratio": "3:2",
      "resolution": "2K",
      "output_format": "png"
    }
  }'
Image-to-Image 
curl -X POST "https://api.apixo.ai/api/v1/generateTask/nano-banana-2" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "callback",
    "callback_url": "https://your-server.com/callback",
    "provider": "official",
    "input": {
      "mode": "image-to-image",
      "prompt": "make this scene look like sunrise with warm golden light",
      "aspect_ratio": "4:5",
      "resolution": "4K",
      "image_urls": ["https://example.com/ref1.jpg"],
      "output_format": "jpeg"
    }
  }'

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Response

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POST /api/v1/generateTask/nano-banana-2

Returns taskId on success for subsequent status queries. Success: 
{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678"
  }
}
Error: 
{
  "code": 400,
  "message": "Insufficient credits",
  "data": null
}

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GET /api/v1/statusTask/nano-banana-2

Query task execution status and results via taskId. 
curl -X GET "https://api.apixo.ai/api/v1/statusTask/nano-banana-2?taskId=task_12345678" \
  -H "Authorization: Bearer YOUR_API_KEY"
Success: 
{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "success",
    "resultJson": "{\"resultUrls\":[\"https://r2.apixo.ai/image.png\"]}",
    "createTime": 1767965610929,
    "completeTime": 1767965652317,
    "costTime": 41388
  }
}
Failed: 
{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "CONTENT_VIOLATION",
    "failMsg": "Content does not meet safety guidelines"
  }
}

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Status Response Fields

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taskId
string
Unique task identifier.
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state
string
Current task state: pending, processing, success, or failed.
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resultJson
string
JSON string containing resultUrls array. Only present on success. Parse with JSON.parse().
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failCode
string
Error code. Only present when state is failed. See Error Codes.
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failMsg
string
Human-readable error message. Only present when state is failed.
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createTime
integer
Task creation timestamp (Unix milliseconds).
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completeTime
integer
Task completion timestamp (Unix milliseconds).
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costTime
integer
Processing duration in milliseconds.

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Error Codes

CodeDescription
400Invalid parameters or request error
401Invalid or missing API Key
429Rate limit exceeded
Fail CodeDescription
CONTENT_VIOLATIONContent violates safety guidelines
INVALID_IMAGE_URLCannot access provided image URL

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Rate Limits

LimitValue
Requests10000 / minute
Concurrent tasks1000
Exceeding limits returns 429 error. Wait and retry.

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Tips

  • Prompt length: Nano Banana 2 supports up to 20,000 characters (vs 5,000 in Nano Banana), suitable for detailed descriptions.
  • Resolution: Choose 1K, 2K, or 4K for output resolution; parameter is case-insensitive (e.g. 2k or 2K both valid).
  • Aspect ratio: Full set includes 1:1, 1:4, 1:8, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 8:1, 9:16, 16:9, 21:9, and auto. Some providers may not support all ratios; unsupported values are omitted for that provider.
  • Output format: Use png for lossless/transparency, or jpeg/jpg for smaller files (jpg is normalized to jpeg).
  • Image-to-image: Up to 14 reference image URLs when mode is image-to-image.
  • Callback mode: For high-concurrency scenarios, use callback mode to avoid frequent polling.
  • Image expiration: Result URLs are valid for 15 days. Download and store important outputs promptly.
  • Content moderation: Prompts must comply with content safety guidelines. Violations return CONTENT_VIOLATION.
  • google_search: Optional boolean; when supported by the provider, enables Google search for context. Default false.
Result URLs expire after 15 days. Download and store important outputs promptly. For high-concurrency scenarios, use callback mode to avoid frequent polling.