Codemod Authoring Harness
Author and safely apply codemods that transform code consistently across a polyglot repo — a four-stage harness that specifies, generates, dry-runs, and verifies every mechanical change before it lands.
A 4-step agentic workflow pack for coding built to run with Cursor, Claude Code, Aider, and ChatGPT. Open the Markdown files, fill the variables, and paste into your model. Most buyers get a reviewable result in about 12 minutes.
- Specify the exact before/after transformation so the codemod has no ambiguity
- Generate a runnable codemod or transformation script per language from the spec
- Review sample diffs in a dry run before committing a single change to the repo
- Apply broadly with a built-in verification step that confirms correctness post-apply
- Enforce a safe-by-default loop — no writes without an explicit review gate
- Works with jscodeshift, ast-grep, sed-based transforms, and custom scripts
Prompt Customization Service — optional help adapting variables and output to your brand voice. Choose your tier at checkout (not tied to this prompt's price).
This pack is $10 on its own. Buying every pack separately costs $935. The Lifetime Bundle is $149 one-time — you save $786 (84% off) and unlock every future pack free.
Get the Lifetime Bundle — $149Paste the license key from your receipt. It must match this prompt pack.
What ships with your purchase
Prompt files
Plain Markdown files with `{{variables}}` you fill in, ready to paste into ChatGPT, Claude, or Gemini. No setup, no tooling required.
Usage guide
Variable reference, model compatibility, examples, and customization tips so you can adapt the pack to your brand voice.
Lifetime updates
When we improve the pack, you get the new version automatically. Email support included with every purchase.
Models tested: Cursor, Claude Code, Aider, ChatGPT.
The workflow inside this pack
4 composable prompts you run in order — each one picks up where the last left off.
- Step 1
Transform Spec
You describe the transformation goal; the agent formalizes it into a precise before/after spec with scope, edge cases, and exclusions.
- Step 2
Codemod Generator
The agent reads the transform spec and generates a working codemod script for each target language.
- Step 3
Dry-Run Review
The agent runs the codemod with dry-run flags and surfaces sample diffs from across the repo for review.
- Step 4 · optional
Apply and Verify
Once the dry run is approved, the agent applies the codemod and immediately runs the verification suite.
Perpetual (lifetime) use license
Your one-time purchase includes an ongoing right to use this prompt pack with the AI tools and models you control for your own and your clients' work — not for resale or public redistribution of the files as a product.
We keep the copyright
The prompt files, guides, examples, and bundled assets stay our copyrighted works (or our licensors'). Payment grants the limited license in our Terms only — it does not transfer ownership.
Need help adapting this prompt to your team? Add Prompt Customization Service at checkout.