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regex-expert

Craft, debug, and explain regular expression patterns across multiple programming language flavors.

4|1|Updated Mar 3, 2026
Search Tags:#developer tools#debugging#text processing#pattern matching#regex#regular expressions
One-click install
npx skills add https://github.com/aegntic/clawreform --skill regex-expert-aegntic
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: regex-expert
Source: https://github.com/aegntic/clawreform/tree/main/crates/clawreform-skills/bundled/regex-expert
Command: npx skills add https://github.com/aegntic/clawreform --skill regex-expert-aegntic

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps users create, understand, and debug complex regular expressions across various programming language flavors, making pattern matching more accessible and efficient.

Core Features & Use Cases

  • Pattern Crafting: Assists in building precise regex patterns for specific matching needs.
  • Debugging & Explanation: Breaks down existing patterns, explains their logic, and identifies potential issues like backtracking.
  • Optimization: Provides guidance on making regex patterns more performant.
  • Use Case: A developer struggling with a complex log parsing regex can use this Skill to understand why it's not matching correctly and get a corrected, explained version.

Quick Start

Use the regex-expert skill to explain the pattern \b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}\b.

Frequently Asked Questions about regex-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I debug a regular expression that is not matching my text correctly?▼

To debug a regular expression, this Skill breaks down existing patterns, explains their matching logic, and identifies issues like catastrophic backtracking. It provides a corrected, explained version of your regex pattern to ensure deterministic text processing.

Does this regex helper work with JavaScript and Python pattern flavors?▼

Yes, this regex helper works with JavaScript and Python, as well as PCRE, Rust, Go, and POSIX. It provides expert assistance tailored to the specific syntax and behavior of each regular expression flavor.

What is the best way to write a regex for validating email or log formats?▼

The best way to write a regex for data validation is to use this Skill for precise pattern crafting. It assists in building accurate regular expressions while offering guidance on avoiding common matching pitfalls.

Why does my regex cause catastrophic backtracking and how can I fix it?▼

Your regex causes catastrophic backtracking due to inefficient pattern logic. This Skill identifies potential backtracking issues within your regular expression and provides optimization techniques to create a performant, corrected pattern.

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