Regex

Adds five regex and text processing tools directly to Claude: test patterns with match indices and capture groups, replace with backreferences, extract matches as structured arrays, and get human-readable explanations of regex syntax. The text_transform tool handles case conversions (camelCase, snake_case, PascalCase, kebab-case), line operations (deduplicate, sort, remove blanks), and basic transformations like trim and reverse, with support for chaining multiple operations. Useful when you're parsing logs, cleaning data, or prototyping text manipulation without switching contexts to a regex tester or writing throwaway scripts. Runs locally via Node.js with stdio transport.