Regex Visual Debugger
This tool visually debugs regular expressions, helping users quickly identify and correct errors for accurate pattern matching.
Install on your platform
We auto-selected Claude Code based on this skill’s supported platforms.
Run in terminal (recommended)
claude mcp add regex-visual-debugger npx -- -y @trustedskills/regex-visual-debugger
Or manually add to ~/.claude/settings.json
{
"mcpServers": {
"regex-visual-debugger": {
"command": "npx",
"args": [
"-y",
"@trustedskills/regex-visual-debugger"
]
}
}
}Requires Claude Code (claude CLI). Run claude --version to verify your install.
About This Skill
The regex-visual-debugger skill provides an interactive interface to visualize, test, and debug regular expressions without writing complex code. It allows users to instantly see how patterns match against sample text, highlighting captured groups and explaining logic in real-time.
When to use it
- Validating email formats or phone numbers before integrating them into a database schema.
- Extracting specific data points like dates or IDs from unstructured log files.
- Troubleshooting why a complex pattern fails to match expected strings during development.
- Learning how alternation, quantifiers, and anchors function within a regex engine.
Key capabilities
- Interactive visual highlighting of matched text segments.
- Real-time testing against custom input samples.
- Breakdown of regex components for educational clarity.
- Support for standard regular expression syntax variations.
Example prompts
- "Visualize how this pattern matches a list of sample sentences and highlight the captured groups."
- "Debug why my current regex fails to extract phone numbers from this specific text block."
- "Explain what each part of this complex expression does and test it against a sample string."
Tips & gotchas
Ensure your input samples are representative of the actual data you will process, as edge cases often reveal pattern flaws. This tool is best for learning and validation; for production systems, verify that the generated regex handles performance constraints on large datasets.
Tags
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Security Audits
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