regex-build

Name: regex-build
Availability: InStock
Author: Sir-chawakorn

Construct, explain, and validate regular expressions for specific programming engine flavors.

9|3|Updated Jun 13, 2026

Search Tags:#performance #debugging #security #validation #pattern matching #regex

Ready to run

npx skills add https://github.com/Sir-chawakorn/sanook-cli --skill regex-build

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: regex-build
Source: https://github.com/Sir-chawakorn/sanook-cli/tree/main/skills/regex-build
Command: npx skills add https://github.com/Sir-chawakorn/sanook-cli --skill regex-build

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill eliminates the frustration of trial-and-error regex development by providing a structured, engine-aware approach to building patterns that are both accurate and performant.

Core Features & Use Cases

Engine-Specific Construction: Generates patterns tailored to specific flavors like JavaScript, Python, or Go, ensuring compatibility and correct syntax.
Safety & Performance: Automatically flags catastrophic backtracking (ReDoS) risks and provides optimized alternatives.
Verification: Generates and executes test suites to ensure patterns meet matching requirements without over-matching or under-matching.

Quick Start

Ask the agent to build a regex for validating a specific input format like a custom product SKU while specifying the target engine flavor.

Frequently Asked Questions about regex-build

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

FAQPage Schema

How do I build a regex pattern that works correctly across different programming engines?▼

To build a regex pattern that works across different programming engines, you must construct engine-specific syntax tailored to flavors like JavaScript, Python, or Go to ensure compatibility and accurate pattern matching.

What is catastrophic backtracking in regex and how can I prevent it?▼

Catastrophic backtracking is a ReDoS vulnerability causing exponential matching time. Prevent it by identifying performance risks during pattern construction and applying optimized alternatives to ensure linear-time performance.

How do I validate a regex pattern to ensure it doesn't over-match or under-match?▼

To validate a regex pattern and prevent over-matching or under-matching, generate and execute test suites against positive and negative datasets to systematically verify matching accuracy and correctness.

Can I use this approach to create patterns for input validation and string replacement?▼

Yes, you can use this approach to construct patterns for input validation, pattern extraction, and string replacement tasks while ensuring the syntax matches your specific target engine flavor.

Why does my regex pattern work in JavaScript but fail in Python?▼

Your regex pattern fails across engines because different programming flavors use specific syntax. Constructing engine-specific patterns ensures compatibility and correct matching behavior across JavaScript, Python, or Go.