| name | tuzi-image-gen |
| description | 通过兔子API（nano-banana 模型）、Google、OpenAI、DashScope 和 Replicate 进行 AI 图片生成。支持文生图、参考图片、宽高比、模型选择，以及 OpenAI 兼容网关方言切换。当用户要求生成、创建或绘制图片时使用。 |
Image Generation (AI SDK)
Multi-provider image generation. Default provider: Tuzi (兔子API, api.tu-zi.com).
Script Directory
Agent Execution:
SKILL_DIR = this SKILL.md file's directory- Script path =
${SKILL_DIR}/scripts/main.ts
Step 0: Load Preferences ⛔ BLOCKING
CRITICAL: This step MUST complete BEFORE any image generation. Do NOT skip or defer.
0.1 Check API Key
Check if the selected provider's API key is available. For Tuzi (default):
echo "${TUZI_API_KEY:-not_set}"
grep -s TUZI_API_KEY .tuzi-skills/.env "$HOME/.tuzi-skills/.env"
CRITICAL: If API key is missing, MUST guide user to obtain and store it BEFORE any generation. Generation is BLOCKED until key is configured.
0.2 Check EXTEND.md
Check EXTEND.md existence (priority: project → user):
test -f .tuzi-skills/tuzi-image-gen/EXTEND.md && echo "project"
test -f "$HOME/.tuzi-skills/tuzi-image-gen/EXTEND.md" && echo "user"
| Result | Action |
|---|
| Found | Load, parse, apply settings. If default_model.[provider] is null → ask model only (Flow 2) |
| Not found | ⛔ Run first-time setup (references/config/first-time-setup.md) → Save EXTEND.md → Then continue |
CRITICAL: If not found, complete the full setup (provider + model + quality + save location) using AskUserQuestion BEFORE generating any images. Generation is BLOCKED until EXTEND.md is created.
| Path | Location |
|---|
.tuzi-skills/tuzi-image-gen/EXTEND.md | Project directory |
$HOME/.tuzi-skills/tuzi-image-gen/EXTEND.md | User home |
EXTEND.md Supports: Default provider | Default quality | Default aspect ratio | Default image size | OpenAI image API dialect | Default models
Schema: references/config/preferences-schema.md
Usage
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image cat.png
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A landscape" --image out.png --ar 16:9
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --quality 2k
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --model gemini-3-pro-image-preview-4k-vip
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "Make it blue" --image out.png --ref source.png
npx -y bun ${SKILL_DIR}/scripts/main.ts --promptfiles system.md content.md --image out.png
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --model gemini-3-pro-image-preview-2k-async
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider google
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider openai
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "一只可爱的猫" --image out.png --provider dashscope
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider replicate
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider openai --imageApiDialect ratio-metadata
Options
| Option | Description |
|---|
--prompt <text>, -p | Prompt text |
--promptfiles <files...> | Read prompt from files (concatenated) |
--image <path> | Output image path (required) |
--provider tuzi|google|openai|dashscope|replicate | Force provider (default: auto-detect, Tuzi first) |
--model <id>, -m | Model ID (see Tuzi Models section for full list) |
--ar <ratio> | Aspect ratio (e.g., 16:9, 1:1, 4:3). Tuzi converts to NxN format |
--size <WxH> | Size override (e.g., 1024x1024, 16x9) |
--quality normal|2k | Quality preset. Tuzi: maps to 1k/2k. Google: maps to 1K/2K |
--imageSize 1K|2K|4K | Image size (Tuzi and Google). Overrides --quality |
--imageApiDialect openai-native|ratio-metadata | OpenAI-compatible endpoint dialect. ratio-metadata is for gateways that expect aspect-ratio size plus metadata.resolution |
--ref <files...> | Reference images. Tuzi: base64 in JSON body. Google: multimodal. OpenAI: edits API |
--n <count> | Number of images |
--json | JSON output |
Tuzi Models
Tuzi API (api.tu-zi.com) is the default provider. Models differ in quality, speed, and supported parameters.
Recommended
| Model ID | Alias | Quality | Notes |
|---|
gemini-3-pro-image-preview | nano-banana-pro | --quality 1k/2k/4k | Default. High quality, supports quality param |
gemini-3.1-flash-image-preview | nano-banana-2 | --quality 1k/2k/4k | Fast, supports extended aspect ratios |
gemini-3-pro-image-preview-vip | nano-banana-pro-vip | 1k built-in | High quality, VIP |
gemini-3-pro-image-preview-2k-vip | nano-banana-pro-2k-vip | 2k built-in | High quality 2K, VIP |
gemini-3-pro-image-preview-4k-vip | nano-banana-pro-4k-vip | 4k built-in | High quality 4K, VIP |
gemini-2.5-flash-image-vip | nano-banana-vip | 1k built-in | Fastest, VIP |
More Models
| Model ID | Alias | Notes |
|---|
gemini-3-pro-image-preview | nano-banana-pro | --quality 1k/2k/4k |
gemini-2.5-flash-image | nano-banana | Fast |
gemini-3-pro-image-preview-hd | nano-banana-pro-hd | HD built-in |
gemini-3-pro-image-preview-2k | nano-banana-pro-2k | 2K built-in |
gemini-3-pro-image-preview-4k | nano-banana-pro-4k | 4K built-in |
gpt-image-2 | — | OpenAI latest image model, supports modern size rules |
gpt-image-1.5 | — | Size: 1:1, 3:2, 2:3 only |
bfl-flux-2-pro | flux-2-pro | Flux |
bfl-flux-2-max | flux-2-max | Flux highest quality |
flux-kontext-pro | kontext-pro | Multi-ref editing |
flux-kontext-max | kontext-max | Multi-ref editing (max) |
doubao-seedream-4-0-250828 | Seedream 4.0 | 2K/4K |
doubao-seedream-4-5-251128 | Seedream 4.5 | 2K/4K |
doubao-seedream-5-0-260128 | Seedream 5.0 lite | 2K/3K |
Async Models
Auto-detected. Script submits task and polls until complete (5s interval, max 30min).
| Model ID | Notes |
|---|
gemini-3-pro-image-preview-async | 1K async |
gemini-3-pro-image-preview-2k-async | 2K async |
gemini-3-pro-image-preview-4k-async | 4K async |
mj-imagine | Midjourney, MJ params in prompt |
Model-Specific Parameters
Quality (--quality or --imageSize 1K|2K|4K):
| Applies to | Values | Notes |
|---|
gemini-3.1-flash-image-preview | 1k / 2k / 4k | Default model, quality adjustable |
gemini-3-pro-image-preview | 1k / 2k / 4k | Quality adjustable |
*-2k-vip, *-4k-vip, *-hd | — | Quality built into model name, param ignored |
| Other models | — | Param ignored |
Aspect ratio (--ar):
| Applies to | Supported ratios |
|---|
| Gemini models (default) | 1:1, 16:9, 9:16, 3:2, 2:3, 4:3, 3:4, 5:4, 4:5, 21:9 |
gemini-3.1-flash-image-preview | Above + 1:4, 4:1, 1:8, 8:1 (extreme ratios) |
gpt-image-2 | Flexible ratio via generated valid pixel size; custom --size must satisfy OpenAI constraints |
gpt-image-1.5 | 1:1, 3:2, 2:3 |
doubao-seedream-* | Use explicit --size / --imageSize; --ar alone is not supported |
| Omitted | Model auto-decides |
Reference images (--ref):
gpt-image-*: OpenAI-style /images/edits multipart upload- Other sync models: base64 data URL in JSON
image field
- Async models:
input_reference in FormData
- Most Tuzi sync models support reference images;
doubao-seedream-3-0-* does not
Seedream (doubao-seedream-*):
| Applies to | Size rules | Reference images |
|---|
doubao-seedream-5-0-* | 2K, 3K, or explicit WxH | Up to 14 |
doubao-seedream-4-5-* | 2K, 4K, or explicit WxH | Up to 14 |
doubao-seedream-4-0-* | 1K, 2K, 4K, or explicit WxH | Up to 14 |
doubao-seedream-3-0-* | Explicit WxH only | Not supported |
Environment Variables
| Variable | Description |
|---|
TUZI_API_KEY | Tuzi API key (https://api.tu-zi.com) |
TUZI_IMAGE_MODEL | Tuzi default model (default: gemini-3-pro-image-preview) |
TUZI_BASE_URL | Custom Tuzi endpoint (default: https://api.tu-zi.com/v1) |
GOOGLE_API_KEY | Google API key |
OPENAI_API_KEY | OpenAI API key |
DASHSCOPE_API_KEY | DashScope API key (阿里云) |
REPLICATE_API_TOKEN | Replicate API token |
GOOGLE_IMAGE_MODEL | Google model override |
OPENAI_IMAGE_MODEL | OpenAI model override (default: gpt-image-2) |
DASHSCOPE_IMAGE_MODEL | DashScope model override |
REPLICATE_IMAGE_MODEL | Replicate model override |
GOOGLE_BASE_URL | Custom Google endpoint |
OPENAI_BASE_URL | Custom OpenAI endpoint |
OPENAI_IMAGE_API_DIALECT | OpenAI-compatible endpoint dialect (openai-native or ratio-metadata) |
DASHSCOPE_BASE_URL | Custom DashScope endpoint |
REPLICATE_BASE_URL | Custom Replicate endpoint |
Load Priority: CLI args > EXTEND.md > env vars > <cwd>/.tuzi-skills/.env > ~/.tuzi-skills/.env
Model Resolution
Priority (highest → lowest), all providers:
- CLI:
--model <id>
- EXTEND.md:
default_model.[provider]
- Env var:
<PROVIDER>_IMAGE_MODEL
- Built-in default
Agent MUST display model info before each generation:
- Show:
Using [provider] / [model]
- Show switch hint:
Switch model: --model <id> | EXTEND.md default_model.[provider] | env <PROVIDER>_IMAGE_MODEL
Provider Selection
--provider specified → use it--ref provided + no --provider → Tuzi > Google > OpenAI > Replicate- Only one API key available → use that provider
- Multiple available → Tuzi first
OpenAI-Compatible Dialect
When provider=openai, the endpoint may still be an OpenAI-compatible gateway rather than native OpenAI infrastructure.
openai-native: standard OpenAI Images API request bodyratio-metadata: sends aspect-ratio size plus metadata.resolution, useful for compatibility gateways in front of non-native image backends
Current limitation: ratio-metadata is text-to-image only. When using --ref, stay on openai-native.
Quality Presets
| Preset | Tuzi | Google | OpenAI |
|---|
normal | 1k | 1K | 1024px |
2k (default) | 2k | 2K | 2048px |
--imageSize 1K|2K|4K overrides quality for Tuzi and Google.
Generation Mode
Default: Sequential (one at a time).
Parallel: Only when user explicitly requests. Use Task tool with run_in_background=true, recommended 4 subagents (max 8).
Error Handling
- Missing API key → ⛔ MUST run API key setup from Step 0.1 (guide user to https://api.tu-zi.com/token, store in .tuzi-skills/.env). Do NOT suggest GOOGLE_API_KEY or other provider keys unless user explicitly chose a different provider.
- Generation failure → auto-retry once
- Tuzi
PROHIBITED_CONTENT → content rejection error
- Tuzi
NO_IMAGE → prompt too vague, suggest more explicit prompt
- Async timeout → error after 30 minutes
- Invalid aspect ratio → warning, proceed with default
Replicate Models
Format: owner/name or owner/name:version
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider replicate
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider replicate --model google/nano-banana-2 --ar 16:9
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A fashion photo" --image out.png --provider replicate --model bytedance/seedream-4.5 --size 4K
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cinematic scene" --image out.png --provider replicate --model wan-video/wan-2.7-image-pro --size 4K
Supported Families
| Family | Example models | Reference images | Aspect ratio | Size handling | Notes |
|---|
| Nano Banana | google/nano-banana, google/nano-banana-pro, google/nano-banana-2 | Up to 14 | Standard documented ratios | --quality maps to 1K/2K, --size can infer ratio + 1K/2K | Best default compatibility |
| Seedream 4.5 | bytedance/seedream-4.5 | Up to 14 | Standard documented ratios | --size supports 2K, 4K, or custom WxH | Good for high-resolution output |
| Seedream 5 Lite | bytedance/seedream-5-lite | Up to 14 | Standard documented ratios | --size supports 2K or 3K | Simpler size presets |
| Wan 2.7 Image | wan-video/wan-2.7-image | Up to 9 | W:H ratios converted into size | --size supports 1K, 2K, or custom WxH | Reference images use images field |
| Wan 2.7 Image Pro | wan-video/wan-2.7-image-pro | Up to 9 | W:H ratios converted into size | --size supports 1K, 2K, 4K, or custom WxH | 4K only for text-to-image (no --ref) |
Replicate Notes
- Current tool saves exactly one image per request, so Replicate supports
--n 1 only.
--imageSize is not used for Replicate. Use --quality, --ar, or --size instead.- Unknown Replicate models still work for prompt-only generation, but
--ref, --ar, and --size are only guaranteed for the families listed above.
- Documented aspect ratios shared by Nano Banana and Seedream in this tool:
1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9.
Extension Support
Custom configurations via EXTEND.md. See Step 0 for paths and supported options.
