Security And Hardening
penpot/penpot
Hardens code against vulnerabilities. An agent skill from penpot/penpot.
Security patterns and OWASP guidelines. An agent skill from aiskillstore/marketplace.
Install Security Patterns
$ npx skills add aiskillstore/marketplace --skill security-patterns -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace security-patterns --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/0xdarkmatter/security-patterns .claude/skills/security-patterns && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "security-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patterns into .claude/skills/security-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-patterns", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patternsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill security-patterns -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace security-patterns --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/0xdarkmatter/security-patterns .agents/skills/security-patterns && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "security-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patterns into .agents/skills/security-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-patterns", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill security-patterns -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace security-patterns --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/0xdarkmatter/security-patterns .cursor/skills/security-patterns && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "security-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patterns into .cursor/skills/security-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-patterns", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/0xdarkmatter/security-patterns--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill security-patterns -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace security-patterns --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/0xdarkmatter/security-patterns .gemini/skills/security-patterns && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "security-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patterns into .gemini/skills/security-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-patterns", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace security-patternsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill security-patterns -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/0xdarkmatter/security-patterns .github/skills/security-patterns && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "security-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patterns into .github/skills/security-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-patterns", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill security-patterns -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace security-patterns --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/0xdarkmatter/security-patterns .opencode/skills/security-patterns && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "security-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/security-patterns into .opencode/skills/security-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "security-patterns", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
security-patterns- GitHub stars
- 430
- Used in
- 1 other repo
- Token cost
- ~1.2k tokens
- SKILL.md length
- 210 words
- Files
- 8 (incl. scripts, references)
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Security patterns and OWASP guidelines. An agent skill from aiskillstore/marketplace.
- : security review
- SKILL.md covers OWASP Top 10 Quick Reference, Input Validation, Output Encoding and Authentication, plus 6 more sections
- Runs Shell scripts from its folder; calls rg; needs API_KEY
- Secrets management
What it does
Security Patterns is an agent skill from aiskillstore/marketplace. Security patterns and OWASP guidelines. Triggers on: security review, OWASP, XSS, SQL injection, CSRF, authentication, authorization, secrets management, input validation, secure coding.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 9 other files, including scripts and reference files (for example `references/auth-patterns.md`, `references/crypto-patterns.md` and `references/owasp-detailed.md`). Compatibility notes: Language-agnostic patterns with framework-specific examples in references.
It sits in Security, covering Web application vulnerabilities and Secure coding. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- : security review
- Secrets management
- Input validation
Example prompts
- “/security-patterns”
Requirements
- Python 3
- A Bash shell
- A credential in API_KEY
- Compatibility (from SKILL.md): Language-agnostic patterns with framework-specific examples in references.
- Pre-approved tools (allowed-tools): Read, Write, Bash, Grep
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteBashGrep
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/ (Shell), which the agent can run.
Shell commands in SKILL.md call:
rg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Language-agnostic patterns with framework-specific examples in references.
From compatibility in the SKILL.md frontmatter.
Context cost
Security Patterns loads about 1.2k tokens when it runs, and up to ~8.5k if it reads all its reference files. Until then it costs about 51 tokens; SKILL.md has 210 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Write, Bash, Grep
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 210 words (~1,238 tokens).
“Essential security patterns for web applications.”
- name
- security-patterns
- allowed-tools
- Read, Write, Bash, Grep
- compatibility
- Language-agnostic patterns with framework-specific examples in references.
Files
SKILL.md and 7 other files (scripts, references) in skills/0xdarkmatter/security-patterns of aiskillstore/marketplace.
- SKILL.md
- references/auth-patterns.md
- references/crypto-patterns.md
- references/owasp-detailed.md
- references/secure-headers.md
- scripts/dependency-audit.sh
- scripts/security-scan.sh
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Security Patterns next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Security Patterns this skillaiskillstore/marketplace | 430 | 1 repos | ~1.2k | Automated safety check: Notes | None | |
| Security And Hardeningpenpot/penpot | 61k | 6 repos | ~4.7k | Automated safety check: Notes | MPL-2.0 | |
| Fix Strix Security Findingsusestrix/strix | 67k | — | ~1.5k | Automated safety check: Pass | Apache-2.0 | |
| Security Audit Scannerruvnet/ruflo | 74k | 2 repos | ~823 | Automated safety check: Pass | MIT | |
| Security Verification Gatefengshao1227/ccg-workflow | 5.9k | — | ~621 | Automated safety check: Notes | MIT | |
| Security and Hardeningaddyosmani/agent-skills | 102k | 1 repos | ~4.4k | Automated safety check: Notes | MIT |
Similar skills
Fix Strix Security Findings
usestrix/strix
Triages findings from a Strix pentest by severity, fixes each root cause with a minimal change, and re-runs Strix to confirm the exploit no longer works.
Security Audit Scanner
ruvnet/ruflo
Runs claude-flow CLI security scans for input validation, path traversal, SQL injection, XSS, hardcoded secrets and known CVEs, and writes an audit report.
Security Verification Gate
fengshao1227/ccg-workflow
Scans code with a bundled Node script for injection, secrets, XSS and other risky patterns, ranks findings by severity and checks that security decisions are documented.
Security and Hardening
addyosmani/agent-skills
Applies a threat-model-first approach to web code that handles untrusted input, authentication, data storage, dependencies or personal data.
- Official
Code Security
semgrep/skills
Security guidelines for writing secure code. An agent skill from semgrep/skills.
More from aiskillstore/marketplace
All 1,085 skills in this repoCode Stats
aiskillstore/marketplace
Analyze codebase with tokei (fast line counts by language) and difft (semantic AST-aware diffs).
Data Processing
aiskillstore/marketplace
Process JSON with jq and YAML/TOML with yq. An agent skill from aiskillstore/marketplace.
Doc Scanner
aiskillstore/marketplace
Scans for project documentation files (AGENTS.md, CLAUDE.md, GEMINI.md, COPILOT.md, CURSOR.md, WARP.md, and 15+ other formats) and synthesizes guidance.
File Search
aiskillstore/marketplace
Modern file and content search using fd, ripgrep (rg), and fzf.
Find Replace
aiskillstore/marketplace
Modern find-and-replace using sd (simpler than sed) and batch replacement patterns.
Investigating Codebases
aiskillstore/marketplace
Automatically activated when user asks how something works, wants to understand unfamiliar code, needs to explore a new codebase, or asks questions like "where is X implemented?", "how does Y…
Related
Categories
Questions about Security Patterns
What does Security Patterns do?
Security patterns and OWASP guidelines. An agent skill from aiskillstore/marketplace. Security Patterns is an agent skill from aiskillstore/marketplace. Security patterns and OWASP guidelines.
When should I use Security Patterns?
Security Patterns fits situations like: : security review; secrets management; input validation.
How do I install Security Patterns in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill security-patterns -a claude-code`. Or copy the skill folder (skills/0xdarkmatter/security-patterns in aiskillstore/marketplace) into .claude/skills/security-patterns in your project. Claude Code loads it when a task matches its description.
How do I install Security Patterns in Codex?
Run `npx skills add aiskillstore/marketplace --skill security-patterns -a codex`. Or copy the skill folder (skills/0xdarkmatter/security-patterns in aiskillstore/marketplace) into .agents/skills/security-patterns in your project. Codex loads it when a task matches its description.
Can I use Security Patterns in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill security-patterns -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/security-patterns, .gemini/skills/security-patterns, .github/skills/security-patterns and .opencode/skills/security-patterns in your project.
What does Security Patterns need to run?
Going by SKILL.md and its folder, Security Patterns needs a shell for the scripts in its folder, the command-line tools its instructions call (rg) and credentials named API_KEY. Our summary lists: Python 3; A Bash shell; A credential in API_KEY. Its frontmatter pre-approves these tools: Read, Write, Bash, Grep. Compatibility (from SKILL.md): Language-agnostic patterns with framework-specific examples in references..
Does Security Patterns access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Security Patterns safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Security Patterns use?
No licence was found for Security Patterns or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Security Patterns use?
About 1.2k tokens (SKILL.md is roughly 5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7.3k tokens, read only when the agent opens those files.
What are the alternatives to Security Patterns?
Skills that share tags, products or a category with Security Patterns: Security And Hardening (penpot/penpot, 61k stars), Fix Strix Security Findings (usestrix/strix, 67k stars), Security Audit Scanner (ruvnet/ruflo, 74k stars) and Security Verification Gate (fengshao1227/ccg-workflow, 5.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Security Patterns?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.