us3-skill

Upload files to UCloud US3 object storage and generate public URLs

UCloud US3 Storage Skill

Upload files to UCloud US3 object storage and generate public URLs.

When to use this skill

Use this skill when:

• The user wants to upload files to cloud storage
• You need to share files via public URLs
• You need to store images, videos, or documents in the cloud
• You need to generate shareable links for files

Prerequisites

• UCloud US3 account and bucket from https://www.ucloud.cn/
• Set environment variables:
  • US3_PUBLIC_KEY - UCloud Public Key (Token)
  • US3_PRIVATE_KEY - UCloud Private Key
  • US3_BUCKET - Bucket domain (e.g., xqm.cn-sh2.ufileos.com)
  • US3_ENDPOINT - API endpoint (e.g., https://api.ucloud.cn/)

Usage

Upload files and get public URLs:

bash

# Upload a file
node /root/clawdbot/skills/us3/upload.mjs --file "/path/to/file.jpg"

# Upload with custom key name
node /root/clawdbot/skills/us3/upload.mjs --file "/path/to/file.jpg" --key "custom/path/file.jpg"

# Upload and get URL only
node /root/clawdbot/skills/us3/upload.mjs --file "/path/to/file.jpg" --url-only

Parameters

• --file (required): Local file path to upload
• --key (optional): Custom object key (path) in bucket. If not provided, uses filename
• --url-only (optional): Output only the public URL (default: false)

Examples

bash

# Upload an image
node /root/clawdbot/skills/us3/upload.mjs --file "/tmp/screenshot.png"

# Upload to specific path
node /root/clawdbot/skills/us3/upload.mjs --file "/tmp/video.mp4" --key "videos/2026/video.mp4"

# Upload Feishu downloaded image
node /root/clawdbot/skills/us3/upload.mjs --file "/tmp/feishu_image_123.png" --key "feishu/$(date +%Y%m%d_%H%M%S).png"

# Get just the URL
node /root/clawdbot/skills/us3/upload.mjs --file "/tmp/report.pdf" --url-only

Output

Returns JSON with upload results:

json

{
  "success": true,
  "url": "https://xqm.cn-sh2.ufileos.com/path/to/file.jpg",
  "key": "path/to/file.jpg",
  "bucket": "xqm.cn-sh2.ufileos.com",
  "size": 123456
}

With --url-only flag, outputs only the URL string:

text

https://xqm.cn-sh2.ufileos.com/path/to/file.jpg

Supported File Types

• Images: JPG, PNG, GIF, WEBP, BMP, SVG
• Videos: MP4, MOV, AVI, MKV, WEBM
• Documents: PDF, DOC, DOCX, TXT, MD
• Audio: MP3, WAV, OGG, M4A
• Archives: ZIP, TAR, GZ
• Any other file type

Common Use Cases

Upload Feishu Images

When user sends an image via Feishu and wants to share:

1. Image is auto-downloaded to /tmp/feishu_*.png
2. Upload to US3: node upload.mjs --file "/tmp/feishu_image_123.png"
3. Share the returned public URL

Upload Processed Files

After converting/processing files:

bash

# Convert and upload
convert input.jpg -resize 800x600 /tmp/resized.jpg
node /root/clawdbot/skills/us3/upload.mjs --file "/tmp/resized.jpg" --key "images/resized_$(date +%s).jpg"

Batch Upload

Upload multiple files:

bash

for file in /tmp/*.png; do
  node /root/clawdbot/skills/us3/upload.mjs --file "$file" --key "batch/$(basename $file)"
done

Notes

• Files are uploaded to a public bucket - URLs are directly accessible
• File size limit: Check your UCloud US3 plan limits
• The bucket domain format: bucket-name.region.ufileos.com
• Use meaningful key names for better organization
• Automatic content-type detection based on file extension

Error Handling

Common errors and solutions:

• missing_credentials: Set all required environment variables
• file_not_found: Check file path exists
• upload_failed: Check network connection and credentials
• invalid_bucket: Verify bucket name and region

Integration Tips

Works well with:

• feishu-media: Upload images from Feishu messages
• ffmpeg: Upload processed videos
• baidu-ocr: Upload images before/after OCR processing