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defending-applications

97 / 100 · Low risk

Fine to try.

By telagod/code-abyss (GitHub) · coding · 245 stars · scanned at commit 2544577

Application security defense knowledge for builders. Covers Web/API/GraphQL hardening (XSS/SQLi/SSRF/IDOR/BOLA/Mass Assignment/deserialization/upload/path traversal), authentication/authorization (OAuth 2.0/OIDC/JWT/Session/Cookie/SAML/SSO), and LLM application security (prompt injection, jailbreak, RAG poisoning, agent privilege escalation, output filtering). Use when designing or reviewing application-layer defenses, fixing CVE-class bugs in your own code, hardening auth flows, or threat-mode…

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'defending-applications' ] || [ -L ~/.agents/skills/'defending-applications' ]; then echo 'A skill folder named defending-applications already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/telagod/code-abyss' "$d" && git -C "$d" checkout --quiet '2544577cf03a67522466450000731e52c64a5184' -- 'skills/defending-applications' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/defending-applications' ~/.agents/skills/'defending-applications' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'defending-applications' ~/.claude/skills/'defending-applications' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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