Breaking Change Detection Harness Agent Pack
Diff your library's public surface before every release, classify what breaks consumers and why, recommend a semver bump, write migration notes, and attach everything to the release PR automatically. Requires GitHub connected to your agent.
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 (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 10 minutes.
- Diff the public API surface across any two versions — exported functions, types, signatures, and constants — without running a build
- Classify every change as breaking, non-breaking, or deprecated with a consumer-impact statement for each
- Recommend the correct semver bump (patch, minor, or major) with a justification grounded in the actual diff
- Generate ready-to-publish migration notes in the exact format consumers need to update their code
- Attach migration notes and the breaking-change report directly to the release PR on GitHub
- Catch accidental breaking changes before they reach consumers and trigger urgent hotfixes
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.
The workflow inside this pack
4 composable prompts you run in order — each one picks up where the last left off.
- Step 1
Public Surface Diff
You give the agent your package reference and version range — it reads the relevant source files from GitHub and extracts every exported symbol, function signature, type, and constant for both versions.
- Step 2
Breaking-Change Classifier
You pass in the surface diff — the agent evaluates each change against standard semver breaking-change rules and classifies it with a short consumer-impact statement explaining what breaks and why.
- Step 3
Semver & Migration Notes
You feed in the classified change list — the agent recommends the semver bump (patch/minor/major) with a justification and drafts a migration note for each breaking change in consumer-friendly language.
- Step 4 · optional
Publisher
You provide the migration notes and release PR reference — the agent posts the breaking-change report and migration notes as a structured PR comment and requests sign-off from the designated reviewers.
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.