Image Generation

Image Generation Skill

Use this skill for image creation and image editing work that should call an image provider API and save usable raster files.

Provider Selection

Current complete provider:

• OpenAI GPT Image Image API: read references/openai.md; use scripts/openai_generate_image.py for repeatable command-line generation and editing. This runner also accepts an OpenAI-compatible base_url for GPT Image compatible providers.
• Nano Banana image generation: read references/nano_banana.md; use scripts/nano_banana_generate_image.py for Nano Banana 2, Nano Banana Pro, and Nano Banana generation/editing.
• Seedream image generation on Volcengine Ark: read references/seedream.md; use scripts/seedream_generate_image.py for Seedream 5 text-to-image, image-to-image, coherent image groups, streaming, and web search.

Reserved provider integration:

• Future providers should add one references/<provider>.md file and one scripts/<provider>_generate_image.py runner following references/provider_contract.md.

Workflow

1. Capture the visual brief: subject, style, composition, aspect ratio, output count, quality, format, destination folder, and any reference images.
2. Pick the provider. OpenAI is the supported default in this skill.
3. Check the provider API key before calling the script. If the key is missing, tell the user the exact variable to configure; after the user provides or confirms the key, write/update it in the project .env and update the current temporary environment before retrying.
4. Read the matching provider reference when API parameters, edits, masks, streaming, or model limits matter.
5. Use the provider script for deterministic file output when possible; otherwise write a small one-off call using the same output contract.
6. Save generated files to the requested path, or to generated_images when no path is specified.
7. Return the saved file paths, output_dir, provider/model, size/quality/format, revised prompt when available, and any provider response ID. For user-visible Markdown images, use browser-safe URLs only; if the script returns local output_paths, call create_download_url for each image and use the returned URL instead of embedding local paths.

API Key Handling

Required keys by provider:

• OpenAI official or compatible GPT Image: OPENAI_IMAGE_KEY. Compatible services may also need the optional endpoint override OPENAI_BASE_URL or --base-url.
• Nano Banana: GOOGLE_IMAGE_KEY.
• Seedream on Volcengine Ark: ARK_API_KEY.

The bundled runners automatically load .env before reading these variables. They check AGENTCLAW_PROJECT_DIR/.env, the current working directory .env, and the AgentClaw project .env, then copy loaded values into the script process environment without overriding already exported variables.

When a selected provider key is not configured, tell the user which key is needed and wait for the user to provide or configure it. After the user provides the value, update the project .env and the current temporary environment for this session before rerunning the provider script. Keep secrets out of prompts, logs, references, tests, and generated reports.

All bundled runners default to generated_images and include output_dir plus absolute_output_dir in their JSON result. These are local filesystem directories, not browser URLs.

OpenAI Quick Start

python agentclaw/skills/builtin_skills/image-generation/scripts/openai_generate_image.py \
  --prompt "A clean product hero image of a compact desktop AI assistant device" \
  --output-dir generated_images \
  --model gpt-image-2

For explicit GPT Image output parameters:

python agentclaw/skills/builtin_skills/image-generation/scripts/openai_generate_image.py \
  --prompt "A polished app icon for AgentClaw, sharp claw mark plus workflow nodes" \
  --model gpt-image-2 \
  --size 1024x1024 \
  --quality high \
  --format png

For an OpenAI-compatible image service:

python agentclaw/skills/builtin_skills/image-generation/scripts/openai_generate_image.py \
  --prompt "A square face icon in a clean 3D style" \
  --base-url https://api.squarefaceicon.org/v1 \
  --model gpt-image-2 \
  --size 1024x1024

For an edit or reference-image composition:

python agentclaw/skills/builtin_skills/image-generation/scripts/openai_generate_image.py \
  --prompt "Create a cohesive product bundle image using these reference items" \
  --input-image body-lotion.png \
  --input-image soap.png \
  --output-dir generated_images

For a masked edit:

python agentclaw/skills/builtin_skills/image-generation/scripts/openai_generate_image.py \
  --prompt "Replace the selected area with a small indoor pool" \
  --input-image room.png \
  --mask-image mask.png

Nano Banana Quick Start

python agentclaw/skills/builtin_skills/image-generation/scripts/nano_banana_generate_image.py \
  --prompt "A professional product photo of an AI automation workspace on a clean desk" \
  --banana nano-banana-2 \
  --aspect-ratio 16:9 \
  --image-size 1K \
  --output-dir generated_images

For professional assets or stronger text rendering:

python agentclaw/skills/builtin_skills/image-generation/scripts/nano_banana_generate_image.py \
  --prompt "A premium magazine cover with the title AgentClaw, no other cover text" \
  --banana nano-banana-2 \
  --aspect-ratio 3:4 \
  --image-size 2K

Seedream Quick Start

python agentclaw/skills/builtin_skills/image-generation/scripts/seedream_generate_image.py \
  --prompt "A cinematic wide-angle image of a vintage train bursting out of a black hole" \
  --seedream seedream-5 \
  --size 2K \
  --output-dir generated_images

For a coherent group:

python agentclaw/skills/builtin_skills/image-generation/scripts/seedream_generate_image.py \
  --prompt "Generate four coherent illustrations of the same courtyard across spring, summer, autumn, and winter" \
  --seedream seedream-5 \
  --sequential-image-generation auto \
  --max-images 4 \
  --stream

For image-to-image:

python agentclaw/skills/builtin_skills/image-generation/scripts/seedream_generate_image.py \
  --prompt "Use this logo as reference and create outdoor sports brand visuals" \
  --input-image logo.png \
  --seedream seedream-5 \
  --size 2K

Notes

• Use one key variable per provider: OPENAI_IMAGE_KEY, GOOGLE_IMAGE_KEY, or ARK_API_KEY.
• For OpenAI-compatible GPT Image services, use OPENAI_BASE_URL or pass --base-url.
• For edits with reference images or masks, keep all source files local and pass their paths explicitly.
• Prefer PNG for transparent or lossless assets, JPEG for faster photo-style outputs, and WebP for compact web delivery.
• Do not display local paths such as generated_images/... or absolute_output_dir inside Markdown image links. The dashboard will resolve relative paths under /dashboard/, for example /dashboard/generated_images/..., which is not a served file URL. Use create_download_url, public_urls, image_markdown, or signed /api/files/...?token=... URLs for display.