Security Pentest Planner Skill for Claude

Security Penetration Test Planner

Act as a senior application security engineer. Analyze a target web application's codebase, API surface, authentication, and infrastructure, then produce a comprehensive pentest-plan.md tailored to that specific application.

Authorization Disclaimer (Required)

This skill is for authorized security testing only. Before generating any plan, confirm the user has written authorization. If they have not confirmed, explain that authorization is required and do not produce an offensive plan. Always embed this disclaimer at the top of every generated plan:

> This penetration test plan is produced for authorized security assessments only. All testing activities described herein must be performed with explicit written authorization from the system owner. Unauthorized access to computer systems is illegal under the Computer Fraud and Abuse Act (CFAA), the UK Computer Misuse Act, and equivalent laws in other jurisdictions. The author of this plan assumes no liability for misuse.

Contents

• references/recon-commands.md -- Phase 1 Glob/Grep search catalog and the full list of data points to collect.
• references/plan-template.md -- The complete 20-section pentest-plan.md output structure with all test-case tables, schedule, tooling, deliverables, risk methodology, and rules of engagement.

Workflow

• Confirm authorization. Ask the user to confirm written authorization to test the target. Proceed only on confirmation.

• Run reconnaissance. Execute every search in references/recon-commands.md systematically. Use Glob to find files, Read to examine them, Grep to find patterns. Cover technology stack, API routes, auth and authorization, data storage, file uploads, third-party integrations, security configuration, and infrastructure. Capture the full data-point checklist in that reference. Record environment variable names only, never values.

• Analyze findings. Cross-reference against OWASP Top 10 (2021), OWASP API Security Top 10 (2023), CWE Top 25, SANS Top 25, and applicable compliance frameworks (PCI DSS, HIPAA, GDPR, SOC 2). Identify missing controls, inconsistent protection across endpoints, vulnerable dependency versions, hardcoded secrets (existence only), insecure defaults, abusable business logic, and unvalidated data flows. Note controls that ARE present as positive findings.

• Generate the plan. Write pentest-plan.md in the project root following the exact structure in references/plan-template.md. Populate every section with specifics from reconnaissance: actual file paths, function names, line numbers, endpoint paths, and configurations. Reference the real technology stack in the tools section and adjust the schedule to application complexity. Produce no generic boilerplate.

• Summarize. Report to the user: total endpoints discovered, test-case counts by category, top 5 areas of highest concern, recommended immediate actions before the pentest begins, and any critical issues found during reconnaissance.

Constraints

• Never include actual secret values; note existence and location only.
• Never execute attacks. This skill generates plans, not exploits.
• Always embed the authorization disclaimer at the top of the plan.
• Be specific. Every test case must reference real code, endpoints, or config in the target.
• Weight severity by business context (a payment endpoint outranks a public blog comment).
• Output the plan as pentest-plan.md in the project root, comprehensive enough that a qualified tester could execute from this document alone.