Regex Pattern Validator

Expert regex architect for building, auditing, and optimizing high-performance, ReDoS-safe patterns.

Install
cmdop skills install agensi-regex-pattern-validator

What it does

The Regex Pattern Validator is a specialized skill for developing, testing, and auditing regular expressions across multiple programming languages. It goes beyond simple string matching by providing deep performance analysis, ReDoS (Regular Expression Denial of Service) protection, and engine-specific compatibility checks.

Why use this skill

Writing regex is easy; writing safe, performant, and cross-platform regex is hard. This skill prevents production outages caused by catastrophic backtracking and ensures your patterns work identically in JavaScript, Python, Go, Java, and PCRE. It automates the tedious process of generating comprehensive test tables for happy paths, boundary cases, and malicious inputs.

Supported Engines & Tools

  • Flavors: Full support for PCRE, JavaScript (ES6+), Python (re/regex), Go (regexp), and Java patterns.
  • Security: Built-in auditing for ReDoS vulnerabilities like nested quantifiers and ambiguous alternations.
  • Codebase Integration: Can scan your entire repository to find and audit existing regex patterns for risks.
  • Library: Access to 30+ production-ready patterns for emails, URLs, semver, and more.