a5c-ai/proxy-server
library/specializations/network-programming/skills/proxy-server/SKILL.md
Expert skill for proxy server implementation, configuration, and traffic interception
$ install --global
skillsauthnpx skillsauth add a5c-ai/babysitter proxy-serverInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 2, 2026, 12:52 PM67.9s2 files scanned
SKILL.md
- name:
- proxy-server
- description:
- Expert skill for proxy server implementation, configuration, and traffic interception
Proxy Server Skill
Expert skill for proxy server implementation, configuration, and network traffic interception.
Capabilities
- Proxy Configuration: Configure Squid, mitmproxy, Charles, and nginx proxy
- HTTP CONNECT Tunneling: Implement HTTP CONNECT for HTTPS tunneling
- SOCKS Protocol: Configure SOCKS4/SOCKS5 proxy servers
- Transparent Proxying: Implement transparent proxying with iptables/nftables
- Traffic Analysis: Analyze proxy traffic and generate reports
- Debugging: Debug proxy connection issues and SSL/TLS interception
- PAC File Generation: Generate Proxy Auto-Configuration (PAC) files
- Caching: Configure proxy caching strategies
Tools and Dependencies
Squid- Caching proxy servermitmproxy- Interactive HTTPS proxynginx- HTTP and reverse proxyiptables/nftables- Linux firewall for transparent proxyCharles- HTTP proxy/monitortinyproxy- Lightweight proxy
Target Processes
- http-proxy-server.js
- socks5-proxy.js
- transparent-proxy.js
Usage Examples
Squid HTTP Proxy Configuration
http_port 3128
acl localnet src 10.0.0.0/8
http_access allow localnet
cache_dir ufs /var/spool/squid 10000 16 256
Transparent Proxy with iptables
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 443 -j REDIRECT --to-port 3129
mitmproxy Interception
mitmproxy -p 8080 --mode transparent
mitmdump -w traffic.flow
PAC File Example
function FindProxyForURL(url, host) {
if (isPlainHostName(host)) return "DIRECT";
if (dnsDomainIs(host, ".internal.com")) return "DIRECT";
return "PROXY proxy.example.com:8080";
}
Quality Gates
- Proxy functionality verified
- SSL/TLS interception working
- Transparent mode operational
- Caching efficiency validated
- Access control tested
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