nigelhorne

Regex Audit — Security skill for Claude Code

Security community

Act as a senior Perl Regex Expert.

How to install Regex Audit

Installs to ~/.claude/skills/nigelhorne-claude-regex-audit/SKILL.md

Terminal
mkdir -p ~/.claude/skills/nigelhorne-claude-regex-audit && curl -fsSL https://raw.githubusercontent.com/nigelhorne/claude/HEAD/commands/regex-audit.md -o ~/.claude/skills/nigelhorne-claude-regex-audit/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Regex Audit does

Act as a senior Perl Regex Expert. Perform a strict static analysis focusing exclusively on regular expressions within the provided code.

EXECUTION & REASONING

  • Step-by-Step Verification: Use a block to simulate hostile or massive string inputs against the existing regexes to expose flaws before refactoring.

REGEX OPTIMIZATION TARGETS

  • ReDoS & Catastrophic Backtracking: Identify poorly bounded quantifiers (.*) or nested repetitions. Refactor using possessive quantifiers or

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Full documentation available on GitHub

View Source Repository

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