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security-and-hardening
Hardens code against vulnerabilities. Use when auditing an input handler for vulnerabilities, when handling user input, authentication, data storage, or external integrations, or when checking a login flow is safe against the OWASP Top Ten.
- License
- MIT
- SKILL.md tokens
- 4,382
- Bundled files
- 1
- Bundled tokens (estimated)
- 3,259
Cost per 1,000 loads
Estimated input cost per 1,000 loads of SKILL.md only (characters ÷ 4). Bundled files, output tokens and execution are excluded.
| Model | Input / 1M tokens | 1,000 loads |
|---|---|---|
| Claude Opus 5 | $5.00 | $21.91 |
| Claude Sonnet 5 | $2.00 | $8.76 |
| Claude Haiku 4.5 | $1.00 | $4.38 |
Safety flags
Detected automatically from files; not a security audit.
- Runs scripts
- No
- Network access
- Yes
- Shell commands
- Yes
Works with
Open SKILL.md format
- Claude Code
- Codex
- Cursor
- GitHub Copilot
- Gemini CLI
- OpenCode
- Goose
Install
npx skills add addyosmani/agent-skills --skill security-and-hardeningLast verified:
security-and-hardening FAQ
What does the security-and-hardening skill do?
Hardens code against vulnerabilities. Use when auditing an input handler for vulnerabilities, when handling user input, authentication, data storage, or external integrations, or when checking a login flow is safe against the OWASP Top Ten. Source: https://github.com/addyosmani/agent-skills/blob/main/skills/security-and-hardening/SKILL.md
What does the security-and-hardening skill cost to load?
SKILL.md is about 4,382 tokens. Estimated input cost per 1,000 loads: Claude Opus 5 $21.91; Claude Sonnet 5 $8.76; Claude Haiku 4.5 $4.38. Estimated input cost per 1,000 loads of SKILL.md only (characters ÷ 4). Bundled files, output tokens and execution are excluded. Prices: https://docs.anthropic.com/en/docs/about-claude/pricing
How do I install the security-and-hardening skill?
Skills CLI: npx skills add addyosmani/agent-skills --skill security-and-hardening. Claude Code: /plugin marketplace add addyosmani/agent-skills, then install the plugin from that marketplace. Download the security-and-hardening skill folder as a ZIP and upload it in Claude.ai skills settings.
Is the security-and-hardening skill safe?
Automatically detected flags: network access, shell commands. Flags are detected automatically from the skill's files and are not a security audit; review the SKILL.md before installing.