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Nano Banana 2 텍스트→이미지: 프롬프트 기반 고속 이미지 생성(종횡비·안전 제어) | RunComfy

google/nano-banana-2/text-to-image

Nano Banana 2로 텍스트 프롬프트에서 고품질 이미지를 생성하세요. 종횡비, 안전 허용도, 출력 형식, 선택적 프롬프트 개선을 실용적으로 제어할 수 있습니다.

Table of contents

1. Get started2. Authentication3. API referenceSubmit a requestMonitor request statusRetrieve request resultsCancel a request4. File inputsHosted file (URL)5. SchemaInput schemaOutput schema

1. Get started

Use RunComfy's API to run google/nano-banana-2/text-to-image. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google/nano-banana-2/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A cinematic close-up portrait of an American woman standing under neon lights in rainy Tokyo, shallow depth of field, reflective wet streets, ultra-detailed, realistic skin texture"
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google/nano-banana-2/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A cinematic close-up portrait of an American woman standing under neon lights in rainy Tokyo, shallow depth of field, reflective wet streets, ultra-detailed, realistic skin texture"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id, in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server‑side fetches (no login/cookies required) and isn't rate‑limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre‑signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "프롬프트",
      "description": "이미지 생성을 위한 프롬프트입니다.",
      "type": "string",
      "default": "A cinematic close-up portrait of an American woman standing under neon lights in rainy Tokyo, shallow depth of field, reflective wet streets, ultra-detailed, realistic skin texture"
    },
    "num_images": {
      "title": "이미지 개수",
      "description": "생성할 이미지 수입니다.",
      "type": "integer",
      "default": 1,
      "minimum": 1,
      "maximum": 4
    },
    "seed": {
      "title": "시드",
      "description": "난수 생성기의 시드입니다.",
      "type": "integer",
      "default": 0
    },
    "aspect_ratio": {
      "title": "종횡비(W:H)",
      "description": "생성 이미지의 종횡비입니다.",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "16:9",
        "3:2",
        "4:3",
        "5:4",
        "1:1",
        "4:5",
        "3:4",
        "2:3",
        "9:16"
      ],
      "default": "auto"
    },
    "resolution": {
      "title": "해상도",
      "description": "생성할 이미지의 해상도입니다.",
      "type": "string",
      "enum": [
        "0.5K",
        "1K",
        "2K",
        "4K"
      ],
      "default": "1K"
    },
    "output_format": {
      "title": "출력 형식",
      "description": "생성 이미지의 형식입니다.",
      "type": "string",
      "enum": [
        "jpeg",
        "png",
        "webp"
      ],
      "default": "png"
    },
    "safety_tolerance": {
      "title": "안전 허용도",
      "description": "콘텐츠 검열을 위한 안전 허용도 수준입니다. 1이 가장 엄격하고 6이 가장 완화됩니다.",
      "type": "integer",
      "enum": [
        1,
        2,
        3,
        4,
        5,
        6
      ],
      "default": 4
    },
    "limit_generations": {
      "title": "생성 제한",
      "description": "true이면 각 프롬프트 라운드를 한 번의 생성으로 제한합니다.",
      "type": "boolean",
      "default": true
    },
    "enable_web_search": {
      "title": "웹 검색 활성화",
      "description": "생성 시 최신 정보를 활용하기 위해 웹 검색을 활성화합니다.",
      "type": "boolean",
      "default": false
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": { "type": "string", "format": "uri" }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": { "type": "string", "format": "uri" }
      }
    }
  }
}
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