grex Regular Expression Generator from Test Cases

grex is a command-line tool and library that automatically generates regular expressions from user-provided test cases. Written in Rust with Python bindings, it produces the most specific regex that matches the given input, supporting Unicode 16.0, character class detection, quantifier notation, and case-insensitive matching.

Installation

Any Agent

npx skills add agentskillexchange/skills --skill grex-regex-generator-from-test-cases

Claude Code

npx skills add agentskillexchange/skills --skill grex-regex-generator-from-test-cases -a claude-code

Cursor