Agent skill · software engineering · sundial-org
codemod-gen
Generate codemods for large-scale code changes. Use when refactoring patterns across many files.
Why this skill is useful
Generates executable jscodeshift codemod scripts based on natural language descriptions, enabling large-scale code transformations that the AI cannot generate on its own.
What it needs
Requires openai account access. About 1k tokens when loaded. Last updated 2026-03-07. 639 stars on the source repository.
What this skill does
Codemod Generator You need to replace a pattern across 500 files. Find and replace won't cut it. This tool generates AST-based codemods that safely transform your code at scale. One command. Zero config. Just works. Quick Start What It Does Generates jscodeshift codemods for your specific transformation Handles complex patterns like class to function conversions Preserves formatting and comments Works across entire codebases Usage Examples Best Practices Test on a branch first - always run codemods on a fresh branch Review the diff - spot check that transformations are correct Run incrementally - do one file type at a time Keep the codemod - save it for future use When to Use This Major framework or library upgrades Enforcing new code patterns across the codebase Deprecating old APIs in favor of new ones Standardizing code style at scale Part of the LXGIC Dev Toolkit This is one of 110+ free developer tools built by LXGIC Studios. No paywalls, no sign-ups, no API keys on free tiers. Just tools that work. Find more: GitHub: https://github.com/LXGIC-Studios Twitter: https://x.com/lxgicstudios Substack: https://lxgicstudios.substack.com Website: https://lxgicstudios.com Requirements No install needed. Just run with npx. Node.js 18+ recommended. Needs OPENAIAPIKEY environment variable. How It Works Takes your plain English description of the transformation and generates a jscodeshift codemod script. The AI understands AST manipulation and outputs a codemod you can run with jscodeshift or babel. License MIT. Free forever. Use it however you want. --- Built by LXGIC Studios GitHub: github.com/lxgicstudios/ai-codemod Twitter: @lxgicstudios
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sundial-org/codemod-gen