Agent-Skills.md

Agent Skills: Image Generation (AI SDK)

AI image generation with OpenAI, Google, OpenRouter, DashScope, Jimeng, Seedream and Replicate APIs. Supports text-to-image, reference images, aspect ratios, and batch generation from saved prompt files. Sequential by default; use batch parallel generation when the user already has multiple prompts or wants stable multi-image throughput. Use when user asks to generate, create, or draw images.

UncategorizedID: jimliu/baoyu-skills/baoyu-image-gen

Repository

jimliu/baoyu-skills
JimLiu
11,1451,244

Install this agent skill to your local

pnpm dlx add-skill https://github.com/JimLiu/baoyu-skills/tree/HEAD/skills/baoyu-image-gen

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skills/baoyu-image-gen/SKILL.md

Skill Metadata

Name
baoyu-image-gen
Description
"[Deprecated: use baoyu-imagine] AI image generation with OpenAI, Azure OpenAI, Google, OpenRouter, DashScope, Z.AI GLM-Image, MiniMax, Jimeng, Seedream and Replicate APIs. Supports text-to-image, reference images, aspect ratios, and batch generation from saved prompt files. Sequential by default; use batch parallel generation when the user already has multiple prompts or wants stable multi-image throughput. Use when user asks to generate, create, or draw images."

Image Generation (AI SDK)

Official API-based image generation. Supports OpenAI, Azure OpenAI, Google, OpenRouter, DashScope (阿里通义万象), Z.AI GLM-Image, MiniMax, Jimeng (即梦), Seedream (豆包) and Replicate.

User Input Tools

When this skill prompts the user, follow this tool-selection rule (priority order):

  1. Prefer built-in user-input tools exposed by the current agent runtime — e.g., AskUserQuestion, request_user_input, clarify, ask_user, or any equivalent.
  2. Fallback: if no such tool exists, emit a numbered plain-text message and ask the user to reply with the chosen number/answer for each question.
  3. Batching: if the tool supports multiple questions per call, combine all applicable questions into a single call; if only single-question, ask them one at a time in priority order.

Concrete AskUserQuestion references below are examples — substitute the local equivalent in other runtimes.

Script Directory

{baseDir} = this SKILL.md's directory. Main script: {baseDir}/scripts/main.ts. Resolve ${BUN_X}: prefer bun; else npx -y bun; else suggest brew install oven-sh/bun/bun.

Step 0: Load Preferences ⛔ BLOCKING

This step MUST complete before any image generation — generation is blocked until EXTEND.md exists.

Check these paths in order; first hit wins:

| Path | Scope | |------|-------| | .baoyu-skills/baoyu-image-gen/EXTEND.md | Project | | ${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-image-gen/EXTEND.md | XDG | | $HOME/.baoyu-skills/baoyu-image-gen/EXTEND.md | User home |

  • Found → load, parse, apply. If default_model.[provider] is null → ask model only.
  • Not found → run first-time setup (references/config/first-time-setup.md) using AskUserQuestion to collect provider + model + quality + save location. Save EXTEND.md, then continue. Do not generate images before this completes.

EXTEND.md keys: default provider, default quality, default aspect ratio, default image size, OpenAI image API dialect, default models, batch worker cap, provider-specific batch limits. Schema: references/config/preferences-schema.md.

Usage

Minimum working examples — see references/usage-examples.md for the full set including per-provider invocations and batch mode.

# Basic
${BUN_X} {baseDir}/scripts/main.ts --prompt "A cat" --image cat.png

# With aspect ratio and high quality
${BUN_X} {baseDir}/scripts/main.ts --prompt "A landscape" --image out.png --ar 16:9 --quality 2k

# Prompt from files
${BUN_X} {baseDir}/scripts/main.ts --promptfiles system.md content.md --image out.png

# With reference image
${BUN_X} {baseDir}/scripts/main.ts --prompt "Make blue" --image out.png --ref source.png

# Specific provider
${BUN_X} {baseDir}/scripts/main.ts --prompt "A cat" --image out.png --provider dashscope --model qwen-image-2.0-pro

# Batch mode
${BUN_X} {baseDir}/scripts/main.ts --batchfile batch.json --jobs 4

Options

| Option | Description | |--------|-------------| | --prompt <text>, -p | Prompt text | | --promptfiles <files...> | Read prompt from files (concatenated) | | --image <path> | Output image path (required in single-image mode) | | --batchfile <path> | JSON batch file for multi-image generation | | --jobs <count> | Worker count for batch mode (default: auto, max from config, built-in default 10) | | --provider google\|openai\|azure\|openrouter\|dashscope\|zai\|minimax\|jimeng\|seedream\|replicate | Force provider (default: auto-detect) | | --model <id>, -m | Model ID — see provider references for defaults and allowed values | | --ar <ratio> | Aspect ratio (16:9, 1:1, 4:3, …) | | --size <WxH> | Explicit size (e.g., 1024x1024) | | --quality normal\|2k | Quality preset (default: 2k) | | --imageSize 1K\|2K\|4K | Image size for Google/OpenRouter (default: from quality) | | --imageApiDialect openai-native\|ratio-metadata | OpenAI-compatible endpoint dialect — use ratio-metadata for gateways that expect aspect-ratio size plus metadata.resolution | | --ref <files...> | Reference images. Supported by Google multimodal, OpenAI GPT Image edits, Azure OpenAI edits (PNG/JPG only), OpenRouter multimodal models, Replicate supported families, MiniMax subject-reference, Seedream 5.0/4.5/4.0. Not supported by Jimeng, Seedream 3.0, SeedEdit 3.0 | | --n <count> | Number of images. Replicate requires --n 1 (single-output save semantics) | | --json | JSON output |

Environment Variables

| Variable | Description | |----------|-------------| | OPENAI_API_KEY | OpenAI API key | | AZURE_OPENAI_API_KEY | Azure OpenAI API key | | OPENROUTER_API_KEY | OpenRouter API key | | GOOGLE_API_KEY | Google API key | | DASHSCOPE_API_KEY | DashScope API key | | ZAI_API_KEY (alias BIGMODEL_API_KEY) | Z.AI API key | | MINIMAX_API_KEY | MiniMax API key | | REPLICATE_API_TOKEN | Replicate API token | | JIMENG_ACCESS_KEY_ID, JIMENG_SECRET_ACCESS_KEY | Jimeng (即梦) Volcengine credentials | | ARK_API_KEY | Seedream (豆包) Volcengine ARK API key | | <PROVIDER>_IMAGE_MODEL | Per-provider model override (OPENAI_IMAGE_MODEL, GOOGLE_IMAGE_MODEL, DASHSCOPE_IMAGE_MODEL, ZAI_IMAGE_MODEL/BIGMODEL_IMAGE_MODEL, MINIMAX_IMAGE_MODEL, OPENROUTER_IMAGE_MODEL, REPLICATE_IMAGE_MODEL, JIMENG_IMAGE_MODEL, SEEDREAM_IMAGE_MODEL) | | AZURE_OPENAI_DEPLOYMENT (alias AZURE_OPENAI_IMAGE_MODEL) | Azure default deployment | | <PROVIDER>_BASE_URL | Per-provider endpoint override | | AZURE_API_VERSION | Azure image API version (default 2025-04-01-preview) | | JIMENG_REGION | Jimeng region (default cn-north-1) | | OPENAI_IMAGE_API_DIALECT | openai-native | ratio-metadata | | OPENROUTER_HTTP_REFERER, OPENROUTER_TITLE | Optional OpenRouter attribution | | BAOYU_IMAGE_GEN_MAX_WORKERS | Override batch worker cap | | BAOYU_IMAGE_GEN_<PROVIDER>_CONCURRENCY | Per-provider concurrency (e.g., BAOYU_IMAGE_GEN_REPLICATE_CONCURRENCY) | | BAOYU_IMAGE_GEN_<PROVIDER>_START_INTERVAL_MS | Per-provider start-gap |

Load priority: CLI args > EXTEND.md > env vars > <cwd>/.baoyu-skills/.env > ~/.baoyu-skills/.env

Model Resolution

Priority (highest → lowest) applies to every provider:

  1. CLI flag --model <id>
  2. EXTEND.md default_model.[provider]
  3. Env var <PROVIDER>_IMAGE_MODEL
  4. Built-in default

For Azure, --model / default_model.azure is the Azure deployment name. AZURE_OPENAI_DEPLOYMENT is the preferred env var; AZURE_OPENAI_IMAGE_MODEL is kept as a backward-compatible alias.

EXTEND.md overrides env vars: if EXTEND.md sets default_model.google: "gemini-3-pro-image-preview" and the env var sets GOOGLE_IMAGE_MODEL=gemini-3.1-flash-image-preview, EXTEND.md wins.

Display model info before each generation:

  • Using [provider] / [model]
  • Switch model: --model <id> | EXTEND.md default_model.[provider] | env <PROVIDER>_IMAGE_MODEL

OpenAI-Compatible Gateway Dialects

provider=openai means the auth and routing entrypoint is OpenAI-compatible. It does not guarantee the upstream image API uses OpenAI native semantics. When a gateway expects a different wire format, set default_image_api_dialect in EXTEND.md, OPENAI_IMAGE_API_DIALECT, or --imageApiDialect:

  • openai-native: pixel size (1536x1024) and native OpenAI quality fields
  • ratio-metadata: aspect-ratio size (16:9) plus metadata.resolution (1K|2K|4K) and metadata.orientation

Use openai-native for the OpenAI native API or strict clones; try ratio-metadata for compatibility gateways in front of Gemini or similar models. Current limitation: ratio-metadata applies only to text-to-image; reference-image edits still need openai-native or a provider with first-class edit support.

Provider-Specific Guides

Each provider has its own quirks (model families, size rules, ref support, limits). Read these when the user picks that provider or asks for non-default behavior:

| Provider | Reference | |----------|-----------| | DashScope (Qwen-Image families, custom sizes) | references/providers/dashscope.md | | Z.AI (GLM-Image, cogview-4) | references/providers/zai.md | | MiniMax (image-01, subject-reference) | references/providers/minimax.md | | OpenRouter (multimodal models, /chat/completions flow) | references/providers/openrouter.md | | Replicate (nano-banana, Seedream, Wan) | references/providers/replicate.md |

Provider Selection

  1. --ref provided + no --provider → auto-select Google → OpenAI → Azure → OpenRouter → Replicate → Seedream → MiniMax (MiniMax's subject reference is more specialized toward character/portrait consistency)
  2. --provider specified → use it (if --ref, must be google/openai/azure/openrouter/replicate/seedream/minimax)
  3. Only one API key present → use that provider
  4. Multiple keys → default priority: Google → OpenAI → Azure → OpenRouter → DashScope → Z.AI → MiniMax → Replicate → Jimeng → Seedream

Quality Presets

| Preset | Google imageSize | OpenAI size | OpenRouter size | Replicate resolution | Use case | |--------|------------------|-------------|-----------------|----------------------|----------| | normal | 1K | 1024px | 1K | 1K | Quick previews | | 2k (default) | 2K | 2048px | 2K | 2K | Covers, illustrations, infographics |

Google/OpenRouter imageSize can be overridden with --imageSize 1K|2K|4K.

Aspect Ratios

Supported: 1:1, 16:9, 9:16, 4:3, 3:4, 2.35:1.

  • Google multimodal: imageConfig.aspectRatio
  • OpenAI: closest supported size
  • OpenRouter: imageGenerationOptions.aspect_ratio; if only --size <WxH> is given, the ratio is inferred
  • Replicate: behavior is model-specific — google/nano-banana* uses aspect_ratio, bytedance/seedream-* uses documented Replicate ratios, Wan 2.7 maps --ar to a concrete size
  • MiniMax: official aspect_ratio values; if --size <WxH> is given without --ar, sends width/height for image-01

Generation Mode

Default: sequential. Batch parallel: enabled automatically when --batchfile contains 2+ pending tasks.

| Situation | Prefer | Why | |-----------|--------|-----| | One image, or 1-2 simple images | Sequential | Lower coordination overhead, easier debugging | | Multiple images with saved prompt files | Batch (--batchfile) | Reuses finalized prompts, applies shared throttling/retries, predictable throughput | | Each image still needs its own reasoning / prompt writing / style exploration | Subagents | Work is still exploratory, each needs independent analysis | | Input is outline.md + prompts/ (e.g. from baoyu-article-illustrator) | Batch — use scripts/build-batch.ts to assemble the payload | The outline + prompt files already contain everything needed |

Rule of thumb: once prompt files are saved and the task is "generate all of these", prefer batch over subagents. Use subagents only when generation is coupled with per-image thinking or divergent creative exploration.

Parallel behavior:

  • Default worker count is automatic, capped by config, built-in default 10
  • Provider-specific throttling applies only in batch mode; defaults are tuned for throughput while avoiding RPM bursts
  • Override with --jobs <count>
  • Each image retries up to 3 attempts
  • Final output includes success count, failure count, and per-image failure reasons

Error Handling

  • Missing API key → error with setup instructions
  • Generation failure → auto-retry up to 3 attempts per image
  • Invalid aspect ratio → warning, proceed with default
  • Reference images with unsupported provider/model → error with fix hint

References

| File | Content | |------|---------| | references/usage-examples.md | Extended CLI examples across providers and batch mode | | references/providers/dashscope.md | DashScope families, sizes, limits | | references/providers/zai.md | Z.AI GLM-image / cogview-4 | | references/providers/minimax.md | MiniMax image-01 + subject reference | | references/providers/openrouter.md | OpenRouter multimodal flow | | references/providers/replicate.md | Replicate supported families + guardrails | | references/config/preferences-schema.md | EXTEND.md schema | | references/config/first-time-setup.md | First-time setup flow |

Extension Support

Custom configurations via EXTEND.md. See Step 0 for paths and schema.