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verifying-invariants

97 / 100 · Low risk

Fine to try.

By kylehughes/agent-plugins-for-making-good-software (GitHub) · other · 21 stars · scanned at commit 28abf51

Assess whether invalid domain values or states can be constructed, decoded, mutated into, or reached. Use proactively for invariant assessments or enforcement-boundary changes; choose bounded evidence. Skip ordinary output tests and async-test timing.

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/'verifying-invariants' ] || [ -L ~/.agents/skills/'verifying-invariants' ]; then echo 'A skill folder named verifying-invariants already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/kylehughes/agent-plugins-for-making-good-software' "$d" && git -C "$d" checkout --quiet '28abf5102e1a52e98ff301a570c5663fb747b435' -- 'plugins/universal/skills/verifying-invariants' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/universal/skills/verifying-invariants' ~/.agents/skills/'verifying-invariants' && 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/'verifying-invariants' ~/.claude/skills/'verifying-invariants' (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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