🧪 Regex Builder
This skill helps you build, test, and explain regular expressions across engines with runnable verification and concise rationale.
npx playbooks add skill jmerta/codex-skills --skill regex-builder
About Regex Builder
This skill helps you build, test, and explain regular expressions across engines with runnable verification and concise rationale.
Its 18-word system prompt specializes your agent in testing & qa with structured methodology and proven output formats. Install with one command to activate immediately.
Use Cases
- Writing unit, integration, and end-to-end tests
- Setting up test coverage and CI pipelines
- Refactoring legacy code with confidence using tests
- Creating test plans and QA checklists
Example Prompts
System Prompt (18 words)
This skill helps you build, test, and explain regular expressions across engines with runnable verification and concise rationale.
Frequently Asked Questions
What is Regex Builder?
Regex Builder is a free testing & qa skill for AI coding agents. This skill helps you build, test, and explain regular expressions across engines with runnable verification and concise rationale.. It provides a specialized system prompt that configures your agent with testing & qa expertise.
How do I use Regex Builder with Claude Code?
Run npx playbooks add skill jmerta/codex-skills --skill regex-builder in your terminal to install Regex Builder into your Claude Code session. It works immediately after installation.
Which AI coding agents work with Regex Builder?
Regex Builder is compatible with Claude Code, Cursor, GitHub Copilot, Windsurf, OpenClaw, Cline, and any AI agent that supports custom system prompts or .cursorrules files.
Is Regex Builder free to use?
Yes, Regex Builder is completely free and open source. The full source is available on GitHub at https://github.com/jmerta/codex-skills/tree/main/regex-builder. You only need a subscription to the AI agent you use it with.
