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improve-tests

95 / 100 · Low risk

Fine to try.

By svyatov/supermatt (GitHub) · coding · 22 stars · scanned at commit 58dabac

Cut a test suite to the tests that catch real bugs and its run time to the minimum: measure first, delete or demote low-value tests, fix slow setup, and prove every cut keeps the checks that matter.

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/'improve-tests' ] || [ -L ~/.agents/skills/'improve-tests' ]; then echo 'A skill folder named improve-tests already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/svyatov/supermatt' "$d" && git -C "$d" checkout --quiet '58dabace448725e473477545bead7633bd496274' -- 'skills/improve-tests' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/improve-tests' ~/.agents/skills/'improve-tests' && 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/'improve-tests' ~/.claude/skills/'improve-tests' (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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