name: file-sender description: | File Sender — Packages workspace files and delivers them to the user with a description.

Use when: - You've generated deliverable files (code projects, images, documents, scripts, reports, etc.) and need to deliver them to the user - The user asks to "send me the file", "export", "package for download", "deliver the files", etc. - You've finished creating/modifying files in the workspace and they're ready to hand off - The user didn't explicitly ask for file delivery, but you've produced valuable deliverables they'll want

Even if the user doesn't explicitly ask for file delivery, you should proactively trigger this skill whenever you generate deliverable artifacts in the workspace.

Do NOT confuse with web search/fetch — this skill packages and delivers local files, not remote content. metadata: { "openclaw": { "requires": { "bins": ["curl", "zip"], "envs": [ "OPENCLAW_INSTANCE_NAME", "OPENCLAW_MANAGER_URL", "OPENCLAW_FILE_PUSH_TOKEN", ], }, }, }

File Sender

Packages workspace files into a ZIP, generates a companion description file, and notifies the Manager to deliver them to the user. Files are persisted locally to .file-outbox/ first — even if notification fails, the files are safe.

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All required environment variables are injected automatically by the Manager at instance creation. No manual configuration needed.

Core Workflow

Step 1: Compose a Description

Before running the script, write a concise description of what you generated. This description will be saved as a .txt file alongside the ZIP in .file-outbox/, serving as a human-readable summary for the user.

The description should include: - What files/project were generated - The main purpose of the files - How to use them (brief instructions)

Good example:

Snake game project (snake_game)
Contains: index.html, style.css, game.js
Usage: Open index.html in a browser to play the game

Bad example:

files

Step 2: Package and Send

Pass the source path and the description text to the script:

bash scripts/send-files.sh \
  "/home/node/workspace/snake_game" \
  "Snake game project with index.html, style.css, game.js. Open index.html in browser to play."

The script will: 1. Validate the path — Only allows files under /home/node/workspace/, blocks symlink traversal 2. Create a ZIP — Single file zip, directory zip -r, 500MB limit 3. Write description — Saves the description text as {file_id}.txt in .file-outbox/ 4. Persist locally — Both ZIP and TXT are stored in .file-outbox/ (safe on disk) 5. Notify Manager — Sends a lightweight POST with metadata only (no file body) 6. Manager pulls — Manager's background task pulls the ZIP from the Agent and forwards it

Core design: After step 4, files are safely on disk. Steps 5-6 failing does NOT lose the files. The Manager retries automatically — the user will always receive the files eventually.

Step 3: Confirm the Result

The script outputs the result. Even if notification fails, the files are safely persisted locally. The system will retry delivery automatically.

Quick Examples

# Send a single file
bash scripts/send-files.sh \
  "/home/node/workspace/report.pdf" \
  "Monthly sales report for March 2026, includes charts and summary tables."

# Send an entire directory (auto-recursive ZIP)
bash scripts/send-files.sh \
  "/home/node/workspace/my_project" \
  "Complete Python project with requirements.txt and README.md. Run: pip install -r requirements.txt && python main.py"

Sending Multiple Non-Adjacent Files

Collect them into a temporary directory first:

mkdir -p /tmp/delivery
cp /home/node/workspace/report.pdf /tmp/delivery/
cp /home/node/workspace/data.csv /tmp/delivery/
bash scripts/send-files.sh "/tmp/delivery" "Analysis report + raw data CSV"

What Gets Saved in .file-outbox/

For each delivery, two files are created:

.file-outbox/
├── 20260401120000_a1b2c3d4.zip   # The packaged files
└── 20260401120000_a1b2c3d4.txt   # The description text (human-readable)

The .txt file contains the exact description you provided, serving as a persistent record of what was sent and why.

When to Trigger

Output Examples

Success:

📦 Packaging files...
   File ID: 20260401120000_a1b2c3d4 | Size: 156KB
📤 Notifying Manager...
✅ Notification sent! Files will be delivered to the user automatically.

Notification failure (files still safe):

⚠️  Cannot connect to Manager. Files are safely stored locally.
   The system will retry automatically — the user will receive the files.

Limits

Environment Requirements

• OPENCLAW_INSTANCE_NAME — Instance name (auto-injected by Manager)
• OPENCLAW_MANAGER_URL — File Push service URL (auto-injected by Manager)
• OPENCLAW_FILE_PUSH_TOKEN — Instance-specific push token (auto-injected by Manager)
• curl and zip commands must be available in PATH

这个 Skill 质量不错，核心功能是把生成的文件打包发送给用户。它最大的优点是安全可靠——文件会先保存在本地再通知 Manager，即使通知出问题文件也不会丢。文档清晰易懂，告诉用户什么时候该用它。不足之处是依赖系统环境和特定的配置变量，在某些情况下可能用不了。建议优先在配置完善的正式环境中使用。总体而言，这是一个设计用心、考虑周全的文件发送工具。