Image Generation (AI SDK)

Official API-based image generation. Supports OpenAI and Google providers.

Script Directory

Agent Execution:

```
SKILL_DIR
```
= this SKILL.md file's directory
Script path =
```
${SKILL_DIR}/scripts/main.ts
```

Preferences (EXTEND.md)

Use Bash to check EXTEND.md existence (priority order):

bash

# Check project-level first
test -f .baoyu-skills/baoyu-image-gen/EXTEND.md && echo "project"

# Then user-level (cross-platform: $HOME works on macOS/Linux/WSL)
test -f "$HOME/.baoyu-skills/baoyu-image-gen/EXTEND.md" && echo "user"

┌──────────────────────────────────────────────────┬───────────────────┐ │ Path │ Location │ ├──────────────────────────────────────────────────┼───────────────────┤ │ .baoyu-skills/baoyu-image-gen/EXTEND.md │ Project directory │ ├──────────────────────────────────────────────────┼───────────────────┤ │ $HOME/.baoyu-skills/baoyu-image-gen/EXTEND.md │ User home │ └──────────────────────────────────────────────────┴───────────────────┘

┌───────────┬───────────────────────────────────────────────────────────────────────────┐ │ Result │ Action │ ├───────────┼───────────────────────────────────────────────────────────────────────────┤ │ Found │ Read, parse, apply settings │ ├───────────┼───────────────────────────────────────────────────────────────────────────┤ │ Not found │ Use defaults │ └───────────┴───────────────────────────────────────────────────────────────────────────┘

EXTEND.md Supports: Default provider | Default quality | Default aspect ratio

Usage

bash

# Basic
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image cat.png

# With aspect ratio
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A landscape" --image out.png --ar 16:9

# High quality
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --quality 2k

# From prompt files
npx -y bun ${SKILL_DIR}/scripts/main.ts --promptfiles system.md content.md --image out.png

# With reference images (Google multimodal only)
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "Make blue" --image out.png --ref source.png

# Specific provider
npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cat" --image out.png --provider openai

Options

Option	Description
`--prompt <text>` , `-p`	Prompt text
`--promptfiles <files...>`	Read prompt from files (concatenated)
`--image <path>`	Output image path (required)
`--provider google\|openai`	Force provider (default: google)
`--model <id>` , `-m`	Model ID
`--ar <ratio>`	Aspect ratio (e.g., `16:9` , `1:1` , `4:3` )
`--size <WxH>`	Size (e.g., `1024x1024` )
`--quality normal\|2k`	Quality preset (default: 2k)
`--imageSize 1K\|2K\|4K`	Image size for Google (default: from quality)
`--ref <files...>`	Reference images (Google multimodal only)
`--n <count>`	Number of images
`--json`	JSON output

Environment Variables

Variable	Description
`OPENAI_API_KEY`	OpenAI API key
`GOOGLE_API_KEY`	Google API key
`OPENAI_IMAGE_MODEL`	OpenAI model override
`GOOGLE_IMAGE_MODEL`	Google model override
`OPENAI_BASE_URL`	Custom OpenAI endpoint
`GOOGLE_BASE_URL`	Custom Google endpoint

Load Priority: CLI args > env vars >

<cwd>/.baoyu-skills/.env

~/.baoyu-skills/.env

Provider Selection

```
--provider
```
specified → use it
Only one API key available → use that provider
Both available → default to Google

Quality Presets

Preset	Google imageSize	OpenAI Size	Use Case
`normal`	1K	1024px	Quick previews
`2k` (default)	2K	2048px	Covers, illustrations, infographics

Google 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
```
Google Imagen: uses
```
aspectRatio
```
parameter
OpenAI: maps to closest supported size

Error Handling

Missing API key → error with setup instructions
Generation failure → auto-retry once
Invalid aspect ratio → warning, proceed with default
Reference images with non-multimodal model → warning, ignore refs

Extension Support

Custom configurations via EXTEND.md. See Preferences section for paths and supported options.

baoyu-image-gen

NPX Install

Tags

SKILL.md Content