Tests WebSocket API implementations for missing upgrade-handshake authentication, Cross-Site WebSocket Hijacking (CSWSH), message injection, insufficient input validation, message-flooding DoS, and information leakage, using Burp Suite's WebSocket interception and the wscat CLI to craft malicious payloads.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill testing-websocket-api-securitynpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill testing-websocket-api-security -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill testing-websocket-api-security -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/testing-websocket-api-securitygh skill install mukul975/Anthropic-Cybersecurity-Skills testing-websocket-api-securitygit clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/mukul975__Anthropic-Cybersecurity-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/testing-websocket-api-security ~/.claude/skills/testing-websocket-api-security # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/testing-websocket-api-security ~/.agents/skills/testing-websocket-api-security # Codex, Cursor, Gemini CLI, Copilot, OpenCode