Regex Assistant

AI-powered regular expression generation, explanation, testing, debugging, and cross-language conversion. Generate regex from natural language, explain complex patterns, test against files, debug failures, and convert between Python, JavaScript, Go, Java, Rust and more. Powered by evolink.ai

AI-powered regular expression generation, explanation, testing, debugging, and cross-language conversion from your terminal.

Powered by Evolink.ai

When to Use

• User wants to generate a regex pattern from a plain language description
• User asks to explain what a regex pattern does
• User needs to test a regex against a file and find matches/edge cases
• User has a regex that doesn't work and needs debugging
• User needs to convert a regex between programming languages
• User wants a quick reference for regex syntax

Quick Start

1. Set your EvoLink API key

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export EVOLINK_API_KEY="your-key-here"

Get a free key: evolink.ai/signup

2. Generate a regex

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bash scripts/regex.sh generate "match email addresses" --lang python

3. Explain a regex

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bash scripts/regex.sh explain "(?<=@)[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}"

Capabilities

Local Commands (no API key needed)

Command	Description
cheatsheet	Regex syntax quick reference — characters, quantifiers, groups, flags, common patterns

AI Commands (require EVOLINK_API_KEY)

Command	Description
generate "<desc>" [--lang <lang>]	AI generate regex from natural language with usage examples
explain "<pattern>" [--lang <lang>]	AI explain regex pattern component by component
test "<pattern>" <file>	AI test regex against file content, find matches and edge cases
debug "<pattern>" "<input>" "<expected>"	AI diagnose why a regex fails and provide a fix
convert "<pattern>" --from <lang> --to <lang>	AI convert regex between programming languages

Supported Languages

python · javascript · go · java · rust · php · ruby · csharp · perl

Examples

Generate a regex for URLs

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bash scripts/regex.sh generate "match HTTP and HTTPS URLs" --lang javascript

Explain a complex pattern

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bash scripts/regex.sh explain "\b\d{1,3}(\.\d{1,3}){3}\b"

Test a regex against a log file

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bash scripts/regex.sh test "\d{4}-\d{2}-\d{2}" server.log

Debug a failing regex

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bash scripts/regex.sh debug "(\d+\.)+\d+" "192.168.1.1" "should match full IP but only matches partial"

Convert Python regex to Go

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bash scripts/regex.sh convert "(?P<year>\d{4})-(?P<month>\d{2})" --from python --to go

Quick reference

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bash scripts/regex.sh cheatsheet

Configuration

Variable	Default	Required	Description
EVOLINK_API_KEY	—	Yes (AI commands)	Your EvoLink API key. Get one free
EVOLINK_MODEL	claude-opus-4-6	No	Model for AI analysis

Required binaries: python3, curl

Security

Data Transmission

AI commands send regex patterns and test content to api.evolink.ai for analysis by Claude. By setting EVOLINK_API_KEY and using these commands, you consent to this transmission. Data is not stored after the response is returned. The cheatsheet command runs entirely locally and never transmits data.

Network Access

• api.evolink.ai — AI analysis (AI commands only)

Persistence & Privilege

Temporary files for API payloads are cleaned up automatically. No credentials or persistent data are stored.

Links

• GitHub
• EvoLink API
• Community
• Support