Curl Search Skill

Web search using curl + multiple search engines. This skill provides a lightweight alternative when dedicated search APIs are unavailable.

Supported Search Engines

Engine	Alias	Description
Baidu	bd	Fast for China, default option
Google	g	Requires proxy/VPN in China
Bing	b	Microsoft Bing
DuckDuckGo	ddg	Privacy-focused search

Usage Examples

Search for OpenClaw tutorial
Google search AI development
Find Python tutorials with bing

Requirements

• curl - Command-line HTTP client
• python3 - For URL encoding

Security Features

This skill includes several security enhancements:

1. Input Sanitization

Removes dangerous shell metacharacters that could be exploited:

sanitize_input() {
    local input="$1"
    echo "$input" | sed 's/[^a-zA-Z0-9 \_\-\.\~\x{4e00}-\x{9fff}]//g'
}

2. Command Injection Protection

• Validates search engine selection
• Restricts max results to 1-50
• Checks for empty input after sanitization

3. URL Encoding

Uses Python's urllib.parse with safe='' parameter to properly encode special characters.

Installation

# Install via ClawHub
clawhub install curl-search

# Or manually
cd your-skills-dir
tar -xzf curl-search.tar.gz

Configuration

Set default search engine:

export SEARCH_ENGINE=google

Set max results:

export MAX_RESULTS=5

Limitations

• Search results come from public search engines
• May be blocked by anti-scraping measures
• Google requires proxy/VPN in China

Version History

• 2.0.0 - Security enhancements added
  • Input sanitization
  • Command injection protection
  • URL encoding improvements
• 1.0.0 - Initial release