Volcengine Image Generation

Practical image generation workflow for Volcengine/ARK-compatible APIs. Use when users need poster creation, text-to-image, reference-image generation, local...

volcengine-image-studio

Use this skill to actually generate images through a Volcengine/ARK-compatible image endpoint.

中文说明

这是一个面向 火山引擎 / ARK 兼容图片生成接口 的实战型 skill，不只是帮你写提示词，而是直接把图片生成跑起来。

适用场景包括：

• 生成海报、宣传图、配图
• 文生图
• 单张或多张参考图生图
• 直接使用本地图片作为输入
• 一次生成多张结果图
• 自动下载生成结果到本地

Default path

Run the bundled script:

bash

python3 scripts/generate_image.py "<prompt>"

By default, URL results are auto-downloaded to Desktop. For multi-image runs, the script creates a new folder per run automatically and opens that folder in Finder.

Required config

The script reads config from env vars:

• VOLCENGINE_API_KEY or ARK_API_KEY
• VOLCENGINE_MODEL or ARK_MODEL
• VOLCENGINE_ENDPOINT or ARK_BASE_URL

Supported modes

1. Text to image

bash

python3 scripts/generate_image.py "极简科技海报，深色背景，蓝紫色霓虹光效，高级感"

2. One local reference image → one new image

bash

python3 scripts/generate_image.py "生成狗狗趴在草地上的近景画面" \
  --image ~/Desktop/dog-reference.png \
  --sequential-image-generation disabled

3. One reference image URL → one new image

bash

python3 scripts/generate_image.py "生成狗狗趴在草地上的近景画面" \
  --image "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imageToimage.png" \
  --sequential-image-generation disabled

4. One reference image → multiple new images

bash

python3 scripts/generate_image.py "参考这个LOGO，做一套户外运动品牌视觉设计，品牌名称为GREEN，包括包装袋、帽子、纸盒、手环、挂绳等。绿色视觉主色调，趣味、简约现代风格" \
  --image "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imageToimages.png" \
  --sequential-image-generation auto \
  --sequential-max-images 5 \
  --stream true

5. Multiple reference images → multiple new images

bash

python3 scripts/generate_image.py "生成3张女孩和奶牛玩偶在游乐园开心地坐过山车的图片，涵盖早晨、中午、晚上" \
  --image "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png" \
  --image "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_2.png" \
  --sequential-image-generation auto \
  --sequential-max-images 3 \
  --stream true

You can also pass a local text file of URLs/paths:

bash

python3 scripts/generate_image.py "根据参考图生成多张变体" --image-file ./refs.txt

Local image path support

• --image ~/Desktop/ref.png → automatically converted to a data: URL with base64
• --image https://... → sent as-is
• --image data:image/png;base64,... → sent as-is

This lets you use local files directly without manually converting them.

Auto-download behavior

When the API returns image URLs, the script downloads them to Desktop by default.

Example download behavior:

• Single image: ~/Desktop/1710000000-my-prompt-1.jpeg
• Multi-image run: ~/Desktop/1710000000-my-prompt/1710000000-my-prompt-1.jpeg

Disable auto-download if needed:

bash

python3 scripts/generate_image.py "极简科技海报" --download-results false

Custom download directory:

bash

python3 scripts/generate_image.py "极简科技海报" --download-dir ~/Downloads/volcengine

Force a new folder even for single-image runs:

bash

python3 scripts/generate_image.py "极简科技海报" --download-folder-per-run true

Disable per-run folders:

bash

python3 scripts/generate_image.py "极简科技海报" --download-folder-per-run false

Disable auto-opening Finder:

bash

python3 scripts/generate_image.py "极简科技海报" --open-download-folder false

Optional env vars

• VOLCENGINE_IMAGE_SIZE (example: 2K)
• VOLCENGINE_IMAGE_COUNT (default 1)
• VOLCENGINE_IMAGE_QUALITY (default standard)
• VOLCENGINE_RESPONSE_FORMAT (default url)
• VOLCENGINE_SEQUENTIAL_IMAGE_GENERATION (disabled / auto)
• VOLCENGINE_SEQUENTIAL_MAX_IMAGES (example: 3)
• VOLCENGINE_STREAM (true / false)
• VOLCENGINE_WATERMARK (true / false)
• VOLCENGINE_OUTPUT_DIR (default generated-images)
• VOLCENGINE_DOWNLOAD_RESULTS (default true)
• VOLCENGINE_DOWNLOAD_DIR (default ~/Desktop)
• VOLCENGINE_DOWNLOAD_FOLDER_PER_RUN (auto / true / false, default auto)
• VOLCENGINE_OPEN_DOWNLOAD_FOLDER (auto / true / false, default auto)
• VOLCENGINE_TIMEOUT (default 120)

Execution checklist

1. Confirm prompt, target style, and whether reference images are needed.
2. Add --image once for single-reference generation, or repeat it for multi-reference generation.
3. For local images, pass the local path directly; the script converts it to base64 data URL automatically.
4. For single-image-to-multi-image and multi-reference sequences, set --sequential-image-generation auto and --sequential-max-images <N>.
5. Use --stream true when the API returns incremental image events.
6. By default, returned image URLs are downloaded to Desktop; multi-image runs go into a new folder automatically.
7. Mention the downloaded paths or folder path in the result.
8. For multi-image runs, let Finder open the created folder unless the user disabled it.
9. If it fails, surface the exact HTTP error or missing field.

Release positioning

Compared with an earlier bare-bones generation flow, this version is packaged around the logic that proved usable in practice:

• supports Volcengine / ARK-compatible endpoint patterns
• supports reference-image workflows, including local files
• supports sequential multi-image generation
• supports automatic result download and run-based folder grouping
• better fits poster and commercial visual production

Troubleshooting

• Missing key → set VOLCENGINE_API_KEY
• Missing model → set VOLCENGINE_MODEL
• Missing endpoint → set VOLCENGINE_ENDPOINT
• Local file not found → check the --image path
• 401/403 → key invalid or lacks permission
• 404/405 → endpoint wrong
• 400 → model/size/request body incompatible with the target API
• No returned files/URLs → inspect raw in the JSON output

References

• references/sources.md found → check the --image path
• 401/403 → key invalid or lacks permission
• 404/405 → endpoint wrong
• 400 → model/size/request body incompatible with the target API
• No returned files/URLs → inspect raw in the JSON output

References

• references/sources.md inspect raw in the JSON output

References

• references/sources.md