Regex Tester — Match, Capture Groups & Explain

Regex testing API for AI agents. Test regex patterns against strings: get all matches, capture groups with positions, and plain-English pattern explanations. Debug complex patterns instantly. Tools: text_test_regex. Use this for building and testing regex patterns, data extraction, or input validation. Returns human-readable explanations alongside technical results. Returns: {matches[], groups[], explanation}. No API key required — x402 micropayment $0.001/call on Base L2.