Regex

About

Regex-mcp is an in-editor server that transforms how developers interact with regular expressions. By integrating directly into popular Model Context Protocol (MCP) clients like Claude Code, Cursor, and VS Code Copilot, it eliminates the need to switch contexts for regex operations. Developers can test patterns against text, receive token-by-token explanations, validate syntax with common pitfall warnings, debug visually, perform find-and-replace, and even generate complex regex from natural language descriptions, all without leaving their development environment.

Key Features

• 1 GitHub stars
• Generate common regex patterns from natural language descriptions (e.g., email, URL, UUID)
• Debug patterns visually with smart hints when matches fail (case, anchors, whitespace)
• Validate regex syntax with common pitfall warnings (greedy traps, anchor issues)
• Test patterns against text with highlighted matches, capture groups, and coverage stats
• Explain patterns with token-by-token breakdown and nested group indentation

Use Cases

• Streamlining the creation and refinement of regular expressions directly within an IDE
• Quickly generating standard regex for common data formats without manual construction
• Understanding and troubleshooting complex or unfamiliar regex patterns