migrate-legacy SKILL.md skillA
This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.
migrate-legacy from phmatray/tagout is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add phmatray/tagout/migrate-legacy@git:20260915.96b4731Pins git:20260915.96b4731 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- phmatray/tagout
- Path
plugins/tagout-migrate/skills/migrate-legacy/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260915.96b4731, committed Sep 15, 2026
- Size
- 13,091 bytes
- Repository stars
- 4
- License
- MIT
Use when upgrading, migrating, or modernizing a legacy application — outdated target framework, out-of-support runtime, obsolete APIs, old packages, or legacy idioms. Triggers on "upgrade this app", "migrate to .NET 10", "modernize this codebase", "this project targets an old framework", « mets à niveau cette app », « migre vers .NET 10 », « modernise ce code legacy », /migrate, /migrate-assess, /migrate-verify. Drives a seven-phase, gate-verified pipeline (assessment → verified production) in…
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
# Migrate a legacy application — the seven-phase pipeline Upgrade a legacy application completely, verifiably, easily, and fast. You are the orchestrator: drive the phases **in order**, never advancing past a red gate. Throughout this skill and its references, **`<kit>`** is the plugin root — resolve it as `<skill-dir>/../..`, where `<skill-dir>` is this skill's base directory (given when the skill loads). Every kit script and template path (`<kit>/scripts/…`, `<kit>/templates/…`) resolves from there — never from the current working directory, which is the *target* repo. ## Phase 0 — Preflight (before anything else) 1. **Run `<kit>/scripts/preflight.sh`** (deterministic; a missing REQUIRED item = stop). The canonical prerequisite list — tools, MCP servers, session skills, each required or recommended, plus the `requiredBy` list where a specific skill hard-requires an entry — lives in **`<kit>/requirements.json`**: the script reads it, nothing is duplicated here. To add or remove a prerequisite, edit THAT file. Re-run with `--json` for the machine version to store in `migration/report.json`. …
Read the whole file at its exact version.
How to install
mdr add phmatray/tagout/migrate-legacy@sha256:0584da004f7edb2fThe line at the top of this page pins the label git:20260915.96b4731, 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.
[](https://markdownregistry.com/a/art_25elrmrigudwh77r)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13091 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
phmatray/tagout · 4 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_25elrmrigudwh77r GET https://markdownregistry.com/api/v1/resolve?ref=phmatray/tagout/migrate-legacy GET https://markdownregistry.com/api/v1/blob/0584da004f7edb2fe47b3aaa4ed5cf8fd47341fba41920da4fb7bc7449141c4f
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.