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Slash Command

Pentest

Run a security testing workflow against a target URL or codebase

Type
Slash Command
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

  1. Download pentest.md from the repository.
  2. 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.
  3. Run it by typing / followed by its name.

Claude Cowork

  1. Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
  2. In Customize → Skills, click +, then upload the ZIP.
  3. 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:

  1. Web application (URL) -- security headers, SSL, exposed endpoints, CORS
  2. Dependencies (project directory) -- npm/pip vulnerability audit
  3. Source code (directory) -- static analysis for secrets, injection, etc.
  4. 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 --verbose

Dependency Audit

python3 ${CLAUDE_PLUGIN_ROOT}/skills/performing-penetration-testing/scripts/dependency_auditor.py TARGET_DIR --verbose

Code Security Scan

python3 ${CLAUDE_PLUGIN_ROOT}/skills/performing-penetration-testing/scripts/code_security_scanner.py TARGET_DIR --verbose

Save JSON reports for any scan that finds critical or high issues:

python3 SCANNER --output /tmp/security-report-$(date +%Y%m%d).json

Step 4: Present Findings

Summarize results for the user:

  1. Summary table -- total findings by severity across all scanners
  2. Critical/High findings -- detail each one with the risk and impact
  3. Remediation priorities -- ordered list of what to fix first

Step 5: Suggest Remediations

For each critical and high finding:

  1. Explain the vulnerability in plain language
  2. Provide the specific fix (reference REMEDIATION_PLAYBOOK.md)
  3. 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 scanner

Safety 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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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.