openclaw-regex-engine

OpenClaw Regex Engine v2.0

Master regular expressions -- 5 tools to test, explain, build, browse, and replace patterns instantly.

Quick Reference

Situation	Action	Tool
Have a regex, need to test it	Run against text, get all matches + groups	regex_test
Found a scary regex in legacy code	Get plain-English breakdown of every token	regex_explain
Know WHAT to match but not HOW	Describe in English, get production regex	regex_build
Need a standard pattern (email, URL, IP)	Browse 50+ battle-tested patterns	regex_library
Need to transform text with regex	Find-replace with backreferences ($1, $2)	regex_replace
Complex pattern with capture groups	Test + Explain combo for full understanding	regex_test + regex_explain

What's New in v2.0

• :brain: PatternForge Builder -- Describe what you want in plain English. Get a production-ready regex with positive/negative test cases, flags, and explanation included.
• :book: RegexLens Explainer -- Break any regex into human-readable components token-by-token. Even nested lookaheads, possessive quantifiers, and Unicode categories.
• :file_cabinet: BattleTest Library -- 50+ curated patterns for email, URL, phone (international), IPv4/IPv6, UUID, JWT, credit card, date formats, file paths, and more. Every pattern includes test cases.
• :arrows_counterclockwise: SmartReplace Engine -- Full backreference support including named groups, global/first-match modes, and before/after diff preview.

MCP Quick Start

{
  "openclaw-regex": {
    "type": "streamable-http",
    "url": "https://regex-engine-mcp.yagami8095.workers.dev/mcp"
  }
}

Add to Claude Desktop, Cursor, Windsurf, VS Code, or any MCP-compatible client. No API key needed for Free tier. Works immediately.

Detection Triggers

This skill activates when you say:

• "test this regex" / "does this pattern match" / "run this regex against"
• "explain this regex" / "what does this regex do" / "break down this pattern"
• "build a regex for" / "create a pattern that matches" / "regex for emails"
• "regex for URL" / "phone number regex" / "UUID pattern" / "IP address regex"
• "regex replace" / "find and replace with regex" / "search and replace with capture groups"
• "regular expression" / "pattern matching" / "capture groups" / "backreference"