migrate-legacy skillA
This file is byte-identical to the first copy the registry indexed, one of 4 copies on public GitHub. Same content hash, same audit grade.
migrate-legacy is agent-read markdown (skill) from phmatray/tagout: Use when upgrading, migrating, or modernizing a legacy application — outdated target framework, out-of-support runtime, obsolete APIs, old packages, or legacy idioms.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 w.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260914.a9bc0b6mdr add phmatray/tagout/migrate-legacy@sha256:0584da004f7edb2fPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_wdjp2qawufvwbjn5)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.a9bc0b6 latest | 2026-09-14 | a9bc0b6 | 13,091 B | A | view · diff |
| git:20260913.5083edd | 2026-09-13 | 5083edd | 13,101 B | A | view · diff |
| git:20260902.3d3a820 | 2026-09-02 | 3d3a820 | 12,729 B | A | view · diff |
| git:20260831.d1e53de | 2026-08-31 | d1e53de | 12,695 B | A | view |
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 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wdjp2qawufvwbjn5 GET https://markdownregistry.com/api/v1/resolve?ref=phmatray/tagout/migrate-legacy GET https://markdownregistry.com/api/v1/blob/0584da004f7edb2fe47b3aaa4ed5cf8fd47341fba41920da4fb7bc7449141c4f
Your agent 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.