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legacy-modernization

100 / 100 · Low risk

Fine to try.

By nimadorostkar/Claude-Skills-collection (GitHub) · other · 36 stars · scanned at commit 1691932

Use when incrementally modernizing a legacy system without a rewrite. Covers characterization tests, seams, the strangler pattern, and sequencing migrations so the system stays shippable throughout. Trigger on "we should just rewrite it", "migrate off this old framework", "extract a service from the monolith". Do not use for restructuring a single module — see the refactoring skill; for whether to split into services, see the microservices skill.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'legacy-modernization' ] || [ -L ~/.agents/skills/'legacy-modernization' ]; then echo 'A skill folder named legacy-modernization already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/nimadorostkar/Claude-Skills-collection' "$d" && git -C "$d" checkout --quiet '1691932edc17063d712a85d02bcc7a1cd3791057' -- 'skills/development/legacy-modernization' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/development/legacy-modernization' ~/.agents/skills/'legacy-modernization' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'legacy-modernization' ~/.claude/skills/'legacy-modernization' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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