Home / gastonchevarria / god-mode · GitHub

deprecation-and-migration SKILL.md skillA

deprecation-and-migration from gastonchevarria/god-mode is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add gastonchevarria/god-mode/deprecation-and-migration@git:20261014.522e28a

Pins git:20261014.522e28a in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: gastonchevarria/god-mode
Path: plugins/god-mode-dev/skills/deprecation-and-migration/SKILL.md
Versions recorded: 2
Latest version: git:20261014.522e28a, committed Oct 14, 2026
First version recorded: Sep 26, 2026
Size: 12,489 bytes
Repository stars: 3
License: MIT

Plans deprecations and migrations: removing old systems or APIs, moving users to a new implementation, maintaining vs sunsetting code. Use for 'deprecate this' or 'migrate off X'.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Deprecation and Migration

## Overview

Code is a liability, not an asset. Every line of code has ongoing maintenance cost — bugs to fix, dependencies to update, security patches to apply, and new engineers to onboard. Deprecation is the discipline of removing code that no longer earns its keep, and migration is the process of moving users safely from the old to the new.

Most engineering organizations are good at building things. Few are good at removing them. This skill addresses that gap.

## When to Use

- Replacing an old system, API, or library with a new one
- Sunsetting a feature that's no longer needed
- Consolidating duplicate implementations
- Removing dead code that nobody owns but everybody depends on
- Planning the lifecycle of a new system (deprecation planning starts at design time)
- Deciding whether to maintain a legacy system or invest in migration

## Core Principles

### Code Is a Liability
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add gastonchevarria/god-mode/deprecation-and-migration@sha256:3dc6f0f746783203

The line at the top of this page pins the label git:20261014.522e28a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_wxzggpo2vaq5omg3.svg)](https://markdownregistry.com/a/art_wxzggpo2vaq5omg3)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Sep 26, 2026 and Oct 14, 2026, about one every 19 days.

version	committed	commit	size	audit
git:20261014.522e28a latest	2026-10-14	522e28a	12,489 B	A	view · diff
git:20260926.941aa31	2026-09-26	941aa31	12,516 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (12489 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

gastonchevarria/god-mode · 3 stars · license MIT · pushed 2026-10-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_wxzggpo2vaq5omg3
GET https://markdownregistry.com/api/v1/resolve?ref=gastonchevarria/god-mode/deprecation-and-migration
GET https://markdownregistry.com/api/v1/blob/3dc6f0f74678320350fd45a49577cf955968690e2489154d27dcfe7a17e5088c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from gastonchevarria/god-mode

.cursorrules Cursor rule

gastonchevarria/god-mode · .cursorrules

git:20260925.62022e9 · audit A · 3 stars

AGENTS.md AGENTS.md file

gastonchevarria/god-mode · AGENTS.md

git:20261015.b72c1a6 · audit B · 3 stars

.cursorrules Cursor rule

gastonchevarria/god-mode · config/.cursorrules

git:20261015.b72c1a6 · audit A · 3 stars

AGENTS.md@config AGENTS.md file

gastonchevarria/god-mode · config/AGENTS.md

git:20261015.b72c1a6 · audit A · 3 stars

CLAUDE.md@config CLAUDE.md file

gastonchevarria/god-mode · config/CLAUDE.md

git:20261010.c9cc1c8 · audit A · 3 stars

ai-product-architect SKILL.md skill

gastonchevarria/god-mode · plugins/god-mode-core/skills/ai-product-architect/SKILL.md · Designs production LLM systems: model routing, latency, caching, RAG, schema-checked output, guardrails, evals. Use for…