Agent Security Hardening includes pricing or quota commentary; 24 code blocks for direct copy-paste. At roughly 3,688 words the SKILL.md is on the longer end of the catalog distribution.
Agent Security Hardening sits in the Security category under the zero-trust sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.
These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.
Security patterns for production AI agents. This is not about network firewalls or server hardening (see agent-deployment-checklist for that). This is about making the agent itself resistant to adversarial inputs, data leaks, and operational failures.
Agent Security Hardening is a community-contributed Claude Code skill in the zero-trust sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/agent-security-hardening/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when hardening agent deployments against adversarial inputs, data leaks, or operational failures. NOT for network security, infrastructure hardening, or penetration testing.
The Agent Security Hardening Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/agent-security-hardening curl -L https://claudskills.com/skills/agent-security-hardening/SKILL.md \ -o ~/.claude/skills/agent-security-hardening/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/agent-security-hardening/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/agent-security-hardening/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\agent-security-hardening\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/agent-security-hardening/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Agent Security Hardening is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{agent-security-hardening-2026,
author = {ndesv21},
title = {Agent Security Hardening [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/agent-security-hardening/}
}Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.