Pentest
Run a security testing workflow against a target URL or codebase
- Type
- Slash Command
- Repository
- jeremylongshore/tons-of-skills-marketplace
- GitHub stars
- 2.8k
- License
- MIT
- Repo last updated
- Sep 27, 2026
What Pentest is
Pentest is a slash command published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”
A slash command is a reusable prompt saved as a markdown file and run by typing its name after a slash. In Claude Code, custom commands have been merged into skills: a file in .claude/commands/ and a skill folder in .claude/skills/ both create the same kind of command, and existing command files keep working.
Pentest gives you a repeatable way to run the same instructions without retyping them, optionally with arguments.
How to install Pentest
Claude Code
- Download pentest.md from the repository.
- Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md.
- Run it by typing / followed by its name.
Claude Cowork
- Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
- In Customize → Skills, click +, then upload the ZIP.
- Run it from any task with / and the skill name.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/security/penetration-tester/commands/pentest.md, shared under the repository's MIT license. Read the full file on GitHub.
Run a structured security assessment. This command walks through authorization, scope selection, scanning, and reporting.
Step 1: Authorization Check
Before scanning anything, confirm authorization:
- If the target is a URL: ask the user to confirm they own it or have written permission to test it.
- If the target is local code/dependencies: confirm it is the user's own project.
- Do not proceed without explicit authorization.
Step 2: Determine Scope
Ask the user what they want to test:
- Web application (URL) -- security headers, SSL, exposed endpoints, CORS
- Dependencies (project directory) -- npm/pip vulnerability audit
- Source code (directory) -- static analysis for secrets, injection, etc.
- Full audit -- all of the above
Step 3: Run Scanners
Based on the selected scope, run the appropriate scripts from the plugin:
Web Application Scan
python3 ${CLAUDE_PLUGIN_ROOT}/skills/performing-penetration-testing/scripts/security_scanner.py TARGET_URL --verboseDependency Audit
python3 ${CLAUDE_PLUGIN_ROOT}/skills/performing-penetration-testing/scripts/dependency_auditor.py TARGET_DIR --verboseCode Security Scan
python3 ${CLAUDE_PLUGIN_ROOT}/skills/performing-penetration-testing/scripts/code_security_scanner.py TARGET_DIR --verboseSave JSON reports for any scan that finds critical or high issues:
python3 SCANNER --output /tmp/security-report-$(date +%Y%m%d).jsonStep 4: Present Findings
Summarize results for the user:
- Summary table -- total findings by severity across all scanners
- Critical/High findings -- detail each one with the risk and impact
- Remediation priorities -- ordered list of what to fix first
Step 5: Suggest Remediations
For each critical and high finding:
- Explain the vulnerability in plain language
- Provide the specific fix (reference REMEDIATION_PLAYBOOK.md)
- Show how to verify the fix
Offer to apply code fixes directly for code-level findings.
Step 6: Generate Report
If the user wants a saved report, combine all findings into a single JSON file:
# Reports are saved via the --output flag on each scannerSafety Rules
- Never run scans against unauthorized targets
- All scanners use safe, non-destructive techniques (GET requests, static analysis)
- No exploit payloads are sent to targets
- No data is exfiltrated or modified
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Pentest?
Pentest is a slash command for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Run a security testing workflow against a target URL or codebase
How do I install Pentest in Claude Code?
Download pentest.md from the repository. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md. Run it by typing / followed by its name.
Can I use Pentest in Claude Cowork?
Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it. In Customize → Skills, click +, then upload the ZIP. Run it from any task with / and the skill name.
Is Pentest safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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