- Image Generation (AI SDK)
- Official API-based image generation. Supports OpenAI, Google, OpenRouter, DashScope (阿里通义万象), Jimeng (即梦), Seedream (豆包) and Replicate providers.
- Script Directory
- Agent Execution
- :
- {baseDir}
- = this SKILL.md file's directory
- Script path =
- {baseDir}/scripts/main.ts
- Resolve
- ${BUN_X}
- runtime: if
- bun
- installed →
- bun
- ; if
- npx
- available →
- npx -y bun
- ; else suggest installing bun
- Step 0: Load Preferences ⛔ BLOCKING
- CRITICAL
- This step MUST complete BEFORE any image generation. Do NOT skip or defer. Check EXTEND.md existence (priority: project → user):
macOS, Linux, WSL, Git Bash
test -f .baoyu-skills/baoyu-image-gen/EXTEND.md && echo "project" test -f " ${XDG_CONFIG_HOME :- $HOME / .config} /baoyu-skills/baoyu-image-gen/EXTEND.md" && echo "xdg" test -f " $HOME /.baoyu-skills/baoyu-image-gen/EXTEND.md" && echo "user"
PowerShell (Windows)
- if
- (
- Test-Path
- .
- baoyu-skills/baoyu-image-gen/EXTEND
- .
- md
- )
- {
- "project"
- }
- $xdg
- =
- if
- (
- $env
- :XDG_CONFIG_HOME
- )
- {
- $env
- :XDG_CONFIG_HOME
- }
- else
- {
- "
- $HOME
- /.config"
- }
- if
- (
- Test-Path
- "
- $xdg
- /baoyu-skills/baoyu-image-gen/EXTEND.md"
- )
- {
- "xdg"
- }
- if
- (
- Test-Path
- "
- $HOME
- /.baoyu-skills/baoyu-image-gen/EXTEND.md"
- )
- {
- "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
- .baoyu-skills/baoyu-image-gen/EXTEND.md
- Project directory
- $HOME/.baoyu-skills/baoyu-image-gen/EXTEND.md
- User home
- EXTEND.md Supports
- Default provider | Default quality | Default aspect ratio | Default image size | Default models | Batch worker cap | Provider-specific batch limits Schema: references/config/preferences-schema.md Usage
Basic
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image cat.png
With aspect ratio
${BUN_X} { baseDir } /scripts/main.ts --prompt "A landscape" --image out.png --ar 16 :9
High quality
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image out.png --quality 2k
From prompt files
${BUN_X} { baseDir } /scripts/main.ts --promptfiles system.md content.md --image out.png
With reference images (Google, OpenAI, OpenRouter, or Replicate)
${BUN_X} { baseDir } /scripts/main.ts --prompt "Make blue" --image out.png --ref source.png
With reference images (explicit provider/model)
${BUN_X} { baseDir } /scripts/main.ts --prompt "Make blue" --image out.png --provider google --model gemini-3-pro-image-preview --ref source.png
OpenRouter (recommended default model)
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image out.png --provider openrouter
OpenRouter with reference images
${BUN_X} { baseDir } /scripts/main.ts --prompt "Make blue" --image out.png --provider openrouter --model google/gemini-3.1-flash-image-preview --ref source.png
Specific provider
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image out.png --provider openai
DashScope (阿里通义万象)
${BUN_X} { baseDir } /scripts/main.ts --prompt "一只可爱的猫" --image out.png --provider dashscope
DashScope Qwen-Image 2.0 Pro (recommended for custom sizes and text rendering)
${BUN_X} { baseDir } /scripts/main.ts --prompt "为咖啡品牌设计一张 21:9 横幅海报,包含清晰中文标题" --image out.png --provider dashscope --model qwen-image-2.0-pro --size 2048x872
DashScope legacy Qwen fixed-size model
${BUN_X} { baseDir } /scripts/main.ts --prompt "一张电影感海报" --image out.png --provider dashscope --model qwen-image-max --size 1664x928
Replicate (google/nano-banana-pro)
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image out.png --provider replicate
Replicate with specific model
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image out.png --provider replicate --model google/nano-banana
Batch mode with saved prompt files
${BUN_X} { baseDir } /scripts/main.ts --batchfile batch.json
Batch mode with explicit worker count
- ${BUN_X}
- {
- baseDir
- }
- /scripts/main.ts
- --batchfile
- batch.json
- --jobs
- 4
- --json
- Batch File Format
- {
- "jobs"
- :
- 4
- ,
- "tasks"
- :
- [
- {
- "id"
- :
- "hero"
- ,
- "promptFiles"
- :
- [
- "prompts/hero.md"
- ]
- ,
- "image"
- :
- "out/hero.png"
- ,
- "provider"
- :
- "replicate"
- ,
- "model"
- :
- "google/nano-banana-pro"
- ,
- "ar"
- :
- "16:9"
- ,
- "quality"
- :
- "2k"
- }
- ,
- {
- "id"
- :
- "diagram"
- ,
- "promptFiles"
- :
- [
- "prompts/diagram.md"
- ]
- ,
- "image"
- :
- "out/diagram.png"
- ,
- "ref"
- :
- [
- "references/original.png"
- ]
- }
- ]
- }
- Paths in
- promptFiles
- ,
- image
- , and
- ref
- are resolved relative to the batch file's directory.
- jobs
- is optional (overridden by CLI
- --jobs
- ). Top-level array format (without
- jobs
- wrapper) is also accepted.
- Options
- Option
- Description
- --prompt
- ,
- -p
- Prompt text
- --promptfiles
- Read prompt from files (concatenated)
- --image
- Output image path (required in single-image mode)
- --batchfile
- JSON batch file for multi-image generation
- --jobs
- Worker count for batch mode (default: auto, max from config, built-in default 10)
- --provider google|openai|openrouter|dashscope|jimeng|seedream|replicate
- Force provider (default: auto-detect)
- --model
- ,
- -m
- Model ID (Google:
- gemini-3-pro-image-preview
- ; OpenAI:
- gpt-image-1.5
- ; OpenRouter:
- google/gemini-3.1-flash-image-preview
- ; DashScope:
- qwen-image-2.0-pro
- )
- --ar
- Aspect ratio (e.g.,
- 16:9
- ,
- 1:1
- ,
- 4:3
- )
- --size
- Size (e.g.,
- 1024x1024
- )
- --quality normal|2k
- Quality preset (default:
- 2k
- )
- --imageSize 1K|2K|4K
- Image size for Google/OpenRouter (default: from quality)
- --ref
- Reference images. Supported by Google multimodal, OpenAI GPT Image edits, OpenRouter multimodal models, and Replicate. Not supported by Jimeng or Seedream
- --n
- Number of images
- --json
- JSON output
- Environment Variables
- Variable
- Description
- OPENAI_API_KEY
- OpenAI API key
- OPENROUTER_API_KEY
- OpenRouter API key
- GOOGLE_API_KEY
- Google API key
- DASHSCOPE_API_KEY
- DashScope API key (阿里云)
- REPLICATE_API_TOKEN
- Replicate API token
- JIMENG_ACCESS_KEY_ID
- Jimeng (即梦) Volcengine access key
- JIMENG_SECRET_ACCESS_KEY
- Jimeng (即梦) Volcengine secret key
- ARK_API_KEY
- Seedream (豆包) Volcengine ARK API key
- OPENAI_IMAGE_MODEL
- OpenAI model override
- OPENROUTER_IMAGE_MODEL
- OpenRouter model override (default:
- google/gemini-3.1-flash-image-preview
- )
- GOOGLE_IMAGE_MODEL
- Google model override
- DASHSCOPE_IMAGE_MODEL
- DashScope model override (default:
- qwen-image-2.0-pro
- )
- REPLICATE_IMAGE_MODEL
- Replicate model override (default: google/nano-banana-pro)
- JIMENG_IMAGE_MODEL
- Jimeng model override (default: jimeng_t2i_v40)
- SEEDREAM_IMAGE_MODEL
- Seedream model override (default: doubao-seedream-5-0-260128)
- OPENAI_BASE_URL
- Custom OpenAI endpoint
- OPENROUTER_BASE_URL
- Custom OpenRouter endpoint (default:
- https://openrouter.ai/api/v1
- )
- OPENROUTER_HTTP_REFERER
- Optional app/site URL for OpenRouter attribution
- OPENROUTER_TITLE
- Optional app name for OpenRouter attribution
- GOOGLE_BASE_URL
- Custom Google endpoint
- DASHSCOPE_BASE_URL
- Custom DashScope endpoint
- REPLICATE_BASE_URL
- Custom Replicate endpoint
- JIMENG_BASE_URL
- Custom Jimeng endpoint (default:
- https://visual.volcengineapi.com
- )
- JIMENG_REGION
- Jimeng region (default:
- cn-north-1
- )
- SEEDREAM_BASE_URL
- Custom Seedream endpoint (default:
- https://ark.cn-beijing.volces.com/api/v3
- )
- BAOYU_IMAGE_GEN_MAX_WORKERS
- Override batch worker cap
- BAOYU_IMAGE_GEN_
_CONCURRENCY - Override provider concurrency, e.g.
- BAOYU_IMAGE_GEN_REPLICATE_CONCURRENCY
- BAOYU_IMAGE_GEN_
_START_INTERVAL_MS - Override provider start gap, e.g.
- BAOYU_IMAGE_GEN_REPLICATE_START_INTERVAL_MS
- Load Priority
- CLI args > EXTEND.md > env vars >
/.baoyu-skills/.env ~/.baoyu-skills/.env Model Resolution Model priority (highest → lowest), applies to all providers: CLI flag: --model
EXTEND.md: default_model.[provider] Env var: _IMAGE_MODEL (e.g., GOOGLE_IMAGE_MODEL ) Built-in default EXTEND.md overrides env vars . If both EXTEND.md default_model.google: "gemini-3-pro-image-preview" and env var GOOGLE_IMAGE_MODEL=gemini-3.1-flash-image-preview exist, EXTEND.md wins. Agent MUST display model info before each generation: Show: Using [provider] / [model] Show switch hint: Switch model: --model | EXTEND.md default_model.[provider] | env _IMAGE_MODEL DashScope Models Use --model qwen-image-2.0-pro or set default_model.dashscope / DASHSCOPE_IMAGE_MODEL when the user wants official Qwen-Image behavior. Official DashScope model families: qwen-image-2.0-pro , qwen-image-2.0-pro-2026-03-03 , qwen-image-2.0 , qwen-image-2.0-2026-03-03 Free-form size in 宽高 format Total pixels must stay between 512512 and 20482048 Default size is approximately 10241024 Best choice for custom ratios such as 21:9 and text-heavy Chinese/English layouts qwen-image-max , qwen-image-max-2025-12-30 , qwen-image-plus , qwen-image-plus-2026-01-09 , qwen-image Fixed sizes only: 1664928 , 14721104 , 13281328 , 11041472 , 9281664 Default size is 1664928 qwen-image currently has the same capability as qwen-image-plus Legacy DashScope models such as z-image-turbo , z-image-ultra , wanx-v1 Keep using them only when the user explicitly asks for legacy behavior or compatibility When translating CLI args into DashScope behavior: --size wins over --ar For qwen-image-2.0 , prefer explicit --size ; otherwise infer from --ar and use the official recommended resolutions below For qwen-image-max/plus/image , only use the five official fixed sizes; if the requested ratio is not covered, switch to qwen-image-2.0-pro --quality is a baoyu-image-gen compatibility preset, not a native DashScope API field. Mapping normal / 2k onto the qwen-image-2.0 table below is an implementation inference, not an official API guarantee Recommended qwen-image-2.0 sizes for common aspect ratios: Ratio normal 2k 1:1 10241024 15361536 2:3 7681152 10241536 3:2 1152768 15361024 3:4 9601280 10801440 4:3 1280960 14401080 9:16 7201280 10801920 16:9 1280720 19201080 21:9 1344576 2048*872 DashScope official APIs also expose negative_prompt , prompt_extend , and watermark , but baoyu-image-gen does not expose them as dedicated CLI flags today. Official references: Qwen-Image API Text-to-image guide Qwen-Image Edit API OpenRouter Models Use full OpenRouter model IDs, e.g.: google/gemini-3.1-flash-image-preview (recommended, supports image output and reference-image workflows) google/gemini-2.5-flash-image-preview black-forest-labs/flux.2-pro Other OpenRouter image-capable model IDs Notes: OpenRouter image generation uses /chat/completions , not the OpenAI /images endpoints If --ref is used, choose a multimodal model that supports image input and image output --imageSize maps to OpenRouter imageGenerationOptions.size ; --size is converted to the nearest OpenRouter size and inferred aspect ratio when possible Replicate Models Supported model formats: owner/name (recommended for official models), e.g. google/nano-banana-pro owner/name:version (community models by version), e.g. stability-ai/sdxl: Examples:
Use Replicate default model
${BUN_X} { baseDir } /scripts/main.ts --prompt "A cat" --image out.png --provider replicate
Override model explicitly
- ${BUN_X}
- {
- baseDir
- }
- /scripts/main.ts
- --prompt
- "A cat"
- --image
- out.png
- --provider
- replicate
- --model
- google/nano-banana
- Provider Selection
- --ref
- provided + no
- --provider
- → auto-select Google first, then OpenAI, then OpenRouter, then Replicate (Jimeng and Seedream do not support reference images)
- --provider
- specified → use it (if
- --ref
- , must be
- ,
- openai
- ,
- openrouter
- , or
- replicate
- )
- Only one API key available → use that provider
- Multiple available → default to Google
- 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: uses
- imageConfig.aspectRatio
- OpenAI: maps to closest supported size
- OpenRouter: sends
- imageGenerationOptions.aspect_ratio
- ; if only
- --size
- is given, aspect ratio is inferred automatically
- Replicate: passes
- aspect_ratio
- to model; when
- --ref
- is provided without
- --ar
- , defaults to
- match_input_image
- Generation Mode
- Default
-
- Sequential generation.
- Batch Parallel Generation
- When
--batchfile
contains 2 or more pending tasks, the script automatically enables parallel generation.
Mode
When to Use
Sequential (default)
Normal usage, single images, small batches
Parallel batch
Batch mode with 2+ tasks
Execution choice:
Situation
Preferred approach
Why
One image, or 1-2 simple images
Sequential
Lower coordination overhead and easier debugging
Multiple images already have saved prompt files
Batch (
--batchfile
)
Reuses finalized prompts, applies shared throttling/retries, and gives predictable throughput
Each image still needs separate reasoning, prompt writing, or style exploration
Subagents
The work is still exploratory, so each image may need independent analysis before generation
Output comes from
baoyu-article-illustrator
with
outline.md
+
prompts/
Batch (
build-batch.ts
->
--batchfile
)
That workflow already produces prompt files, so direct batch execution is the intended path
Rule of thumb:
Prefer batch over subagents once prompt files are already saved and the task is "generate all of these"
Use subagents only when generation is coupled with per-image thinking, rewriting, or divergent creative exploration
Parallel behavior:
Default worker count is automatic, capped by config, built-in default 10
Provider-specific throttling is applied only in batch mode, and the built-in defaults are tuned for faster throughput while still avoiding obvious RPM bursts
You can override worker count with
--jobs
Each image retries automatically 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 Extension Support Custom configurations via EXTEND.md. See Preferences section for paths and supported options.