regex-builder

Installation
SKILL.md

DEPRECATED — Modern Claude models produce accurate, well-explained regex patterns with edge-case test suites natively, including multi-language usage examples. The uplift delta from this skill approaches zero. Retained for archival reference only.

Regex Builder

Transforms matching requirements (positive and negative examples) into tested regex patterns with component-by-component explanations, capture group documentation, edge case identification, and ready-to-use code in Python and JavaScript.

Reference Files

File Contents Load When
references/character-classes.md Character class reference, Unicode categories, POSIX classes Always
references/quantifiers.md Quantifier behavior, greedy vs lazy vs possessive, backtracking Pattern needs repetition
references/common-patterns.md Validated patterns for email, URL, phone, IP, date, UUID, etc. Common validation requested
references/flavor-differences.md Syntax differences between Python, JavaScript, PCRE, POSIX Multi-language usage needed
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Installs
35
GitHub Stars
230
First Seen
Mar 23, 2026