Legacy Code Comprehension Harness
Map, explain, and safely change legacy multi-tech systems before the last person who understood them leaves. Connected agents read the code directly and publish findings to Confluence so nothing is lost. Requires GitHub connected; Confluence optional.
A 4-step agentic workflow pack for coding built to run with Claude, ChatGPT, Claude Code, and Cursor. It drives an AI agent connected to GitHub and Confluence (for example via MCP), and still works without them — paste the relevant data in when the prompt asks. Most buyers get a reviewable result in about 15 minutes.
- Reconstruct what legacy code actually does — inferred from behavior, not wishful-thinking comments
- Produce a prioritized map of fragile areas, undocumented side-effects, and hidden dependencies
- Generate a change safety guide with ordered steps, test gates, and rollback checkpoints
- Publish captured knowledge directly to Confluence so the next engineer doesn't start from zero
- Degrades gracefully — guides you to paste code snippets if GitHub or Confluence are unavailable
- Works across mixed-language legacy stacks: Java, PHP, C#, Python, Rails, and more
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).
Tap a tool for its official setup guide. Connect them to your AI agent (for example via MCP), or paste the data in manually.
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: Claude, ChatGPT, Claude Code, Cursor. Connected tools this pack drives: GitHub, Confluence.
The workflow inside this pack
4 composable prompts you run in order — each one picks up where the last left off.
- Step 1
Behavior Reconstruction
You give the agent the module name and it reads the source files, call chains, and data models via GitHub.
- Step 2 · optional
Risk & Landmine Map
Feed the behavior reconstruction output; the agent identifies tight coupling, global state, implicit contracts, and missing tests.
- Step 3 · optional
Change Safety Guide
You describe the change you want to make; the agent reads the landmine map and behavior reconstruction to sequence safe steps.
- Step 4 · optional
Knowledge Capture
You provide the behavior reconstruction, risk map, and change guide outputs; the agent formats them into a Confluence-ready document.
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.