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brownfield-adoption

95 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By hashgraph-online/awesome-codex-plugins (GitHub) · coding · 1,573 stars · scanned at commit 70b6a3a

Step-by-step process for adopting Cavekit on an existing codebase. Covers the 6-step brownfield process, bootstrap prompt design, spec validation against existing behavior, and the decision between brownfield adoption vs deliberate rewrite. Trigger phrases: "brownfield", "existing codebase", "add Cavekit to existing project", "adopt Cavekit", "layer kits on code", "retrofit kits"

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

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

if [ -e ~/.agents/skills/'brownfield-adoption' ] || [ -L ~/.agents/skills/'brownfield-adoption' ]; then echo 'A skill folder named brownfield-adoption already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/hashgraph-online/awesome-codex-plugins' "$d" && git -C "$d" checkout --quiet '70b6a3a3a7c774671e45af646306e1448baf0511' -- 'plugins/JuliusBrussee/blueprint/skills/brownfield-adoption' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/JuliusBrussee/blueprint/skills/brownfield-adoption' ~/.agents/skills/'brownfield-adoption' && 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/'brownfield-adoption' ~/.claude/skills/'brownfield-adoption' (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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