Nano Banana 2

Generate images through Frevana's AI Factory image API.

This skill returns the validated API response JSON unchanged. Treat generatedimages[0].imageurl as the primary image URL.

Trigger Phrases

• Nano Banana 2
• nano banana 2
• nano banana

What This Skill Needs

• user-provided prompt or contents
• optional Frevana image config fields: seed, maxOutputTokens, responseModalities, imageConfig.aspectRatio, imageConfig.imageSize
• FREVANA_TOKEN in the environment variables, or an explicit --token override for the current run
• curl
• bash
• python3

Execution Order

1. Confirm the user provided the image prompt.
2. Do not ask for or pass through image routing overrides; the Frevana script owns them.
3. Prefer the script over ad hoc curl commands.
4. Let the script read FREVANA_TOKEN first.
5. In non-interactive runs, fail fast if the token is missing and tell the user to set FREVANA_TOKEN or pass --token.
6. Return the raw API response JSON, or the first image URL when the user only wants the hosted asset.
7. Save the JSON with --output when useful.

Allowed Options

• --seed
• --max-output-tokens
• --response-modality (repeatable)
• --aspect-ratio
• --image-size (1K, 2K, 4K; numeric values like 1800 and WxH values like 1024x1024 are normalized to the nearest tier, using the larger edge for WxH; defaults to 1K)

Command

bash <skill-path>/scripts/generate_image.sh \
  --prompt "A playful dashboard scene with floating cards and light SaaS illustration styling" \
  --seed 42 \
  --max-output-tokens 2048 \
  --response-modality IMAGE \
  --aspect-ratio 16:9 \
  --image-size 2K \
  --output ./out/nano-banana-2-result.json

Response Shape

{
  "generated_images": [
    {
      "image_url": "https://static.frevana.com/images/user-id/example-image-id.png",
      "enhanced_prompt": "string",
      "rai_filtered_reason": "string",
      "mime_type": "image/png"
    }
  ],
  "positive_prompt_safety_attributes": {},
  "credits_consumed": 1
}

Notes

• Do not pass image routing overrides; the script rejects them.
• Do not rewrite, proxy, or transform the returned Frevana image URLs unless the user asks for that.