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growing-outside-in-systems

100 / 100 · Low risk

Fine to try.

By a5c-ai/babysitter (GitHub) · coding · 1,913 stars · scanned at commit feb68ab

Drive feature development using Outside-In TDD with Hexagonal Architecture. Design emerges through inline code, in-memory fakes, interface extraction, and deferred I/O. Use when building features, writing tests, or structuring backend services. Triggers on: TDD, outside-in, hexagonal, ports and adapters, emergent design, acceptance test, component test, walking skeleton, in-memory fakes, component, contract test, adapter, fast tests, sub-second feedback. Language-agnostic (Go, Rust, Python, Typ…

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/'growing-outside-in-systems' ] || [ -L ~/.agents/skills/'growing-outside-in-systems' ]; then echo 'A skill folder named growing-outside-in-systems already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/a5c-ai/babysitter' "$d" && git -C "$d" checkout --quiet 'feb68abe397acc14f32b34984975c48fedba2b33' -- 'library/specializations/backend-development/skills/growing-outside-in-systems' && mkdir -p ~/.agents/skills && cp -R "$d"/'library/specializations/backend-development/skills/growing-outside-in-systems' ~/.agents/skills/'growing-outside-in-systems' && 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/'growing-outside-in-systems' ~/.claude/skills/'growing-outside-in-systems' (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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