---
title: "Migration and Code Evolution Instructions Generator - Air Market"
description: "You are midway through a migration or a framework upgrade, and the new way of doing things exists in one branch while the old way is everywhere else. This compares two versions of the project and wri…"
canonical: "https://airmarket.ai/app/generate-custom-instructions-from-codebase"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Migration and Code Evolution Instructions Generator

Skill by [GitHub](/@github)

# Migration and Code Evolution Instructions Generator

Turn what changed between two versions into rules to follow

## What this does

You are midway through a migration or a framework upgrade, and the new way of doing things exists in one branch while the old way is everywhere else. This compares two versions of the project and writes instructions that keep new code consistent with the direction you are heading.

### Top 3 things it does for you

- Compare two versions and see what really changed
- Write down the rules for an in-progress migration
- Keep a big refactor consistent across the codebase

## Information

**Migration and Code Evolution Instructions Generator at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [GitHub](/@github) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 8 KB |
| Licence | MIT |
| Repository | [github/awesome-copilot](https://github.com/github/awesome-copilot/tree/90921cc46f4e452ea379e70884d60ec25263f16a/skills/generate-custom-instructions-from-codebase) |
| GitHub stars | 38,187 (as of Nov 2026) |
| Installs | 8,925, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Migration and Code Evolution Instructions Generator and flagged nothing. AIR's verdict: **safe**.

**What Migration and Code Evolution Instructions Generator's check was run against**

|  |  |
| --- | --- |
| Commit | 90921cc46f4e452ea379e70884d60ec25263f16a |
| Content hash | 1b7548d9e1721e959e5ccca8901dc6f353ffb9c343ec20572b96a15998a5b005 |
| Files read | [Browse the files at this exact commit](https://github.com/github/awesome-copilot/blob/90921cc46f4e452ea379e70884d60ec25263f16a/skills/generate-custom-instructions-from-codebase/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Migration and Code Evolution Instructions Generator](/security/generate-custom-instructions-from-codebase)

## About Migration and Code Evolution Instructions Generator

This generates migration and code evolution instructions for GitHub Copilot. It analyzes the differences between two project versions - branches, commits, or releases - and turns them into precise instructions.

The point is consistency: keeping generated code aligned with where the project is going during technology migrations, major refactoring, or framework version upgrades.

## What's inside

- SKILL.md - instructions

## Questions

### Is Migration and Code Evolution Instructions Generator safe to install?

AIR scanned this exact version of Migration and Code Evolution Instructions Generator and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 90921cc46f4e, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/generate-custom-instructions-from-codebase.

### How do I install Migration and Code Evolution Instructions Generator?

Open https://airmarket.ai/app/generate-custom-instructions-from-codebase on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/github/awesome-copilot/tree/90921cc46f4e452ea379e70884d60ec25263f16a/skills/generate-custom-instructions-from-codebase. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by GitHub](/@github)

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Canonical URL: <https://airmarket.ai/app/generate-custom-instructions-from-codebase>