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deprecate-and-migrate SKILL.md skillA

deprecate-and-migrate from outlinedriven/outline-driven-development is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add outlinedriven/outline-driven-development/deprecate-and-migrate@git:20260905.1f63894

Pins git:20260905.1f63894 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: outlinedriven/outline-driven-development
Path: .devin/skills/deprecate-and-migrate/SKILL.md
Versions recorded: 2
Latest version: git:20260905.1f63894, committed Sep 5, 2026
First version recorded: Sep 2, 2026
Size: 5,879 bytes
Repository stars: 55
License: Apache-2.0

Use when asked to remove old code, migrate consumers, or decide whether to maintain or sunset a system. Not for untracked data or changes without VCS rollback.

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

# Deprecate and migrate

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Removing old code, migrating users to a replacement, or deciding whether to maintain or sunset a system. |
| Authority | Reversible local: writes only VCS-tracked code, config, and docs (destructive; the exact changed set is shown before any mutation); rollback is version control. No remote mutation. |
| Side effect | Builds or verifies a replacement, updates consumers and docs, and removes obsolete VCS-tracked code/config/docs only after migration evidence clears. |
| Done | All consumers use the production-proven replacement, old usage is zero, obsolete code/config/docs are removed, and rollback/monitoring evidence is recorded. |

## Inputs

- The deprecated system: its VCS-tracked code, tests, config, and docs, and the full set of consumers. Must be supplied.
- A replacement that is production-proven and covers every critical use case of the old system, or a decision to build one first. Must exist before any removal.
- Current usage evidence: metrics, logs, and dependency analysis proving active usage. Must be supplied to prove zero usage before removal.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add outlinedriven/outline-driven-development/deprecate-and-migrate@sha256:789392a9c3f68505

The line at the top of this page pins the label git:20260905.1f63894, 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_45ssihd46xzibv4s.svg)](https://markdownregistry.com/a/art_45ssihd46xzibv4s)

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

Versions

The registry has recorded 2 versions of this file, between Sep 2, 2026 and Sep 5, 2026, about one every 3 days.

version	committed	commit	size	audit
git:20260905.1f63894 latest	2026-09-05	1f63894	5,879 B	A	view · diff
git:20260902.1fe14a3	2026-09-02	1fe14a3	5,983 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 (5879 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

outlinedriven/outline-driven-development · 55 stars · license Apache-2.0 · pushed 2026-09-28 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_45ssihd46xzibv4s
GET https://markdownregistry.com/api/v1/resolve?ref=outlinedriven/outline-driven-development/deprecate-and-migrate
GET https://markdownregistry.com/api/v1/blob/789392a9c3f68505b7f92ae9e76618024bcb43a0b30f0e3172e3a3edc0c1ac73

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.

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