Claude Code Plugins

Community-maintained marketplace

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Correctness-first: forces writing the function contract, loop invariant, termination argument, and edge cases BEFORE code. Catches Boyer-Moore, leftmost binary search, QuickSelect traps.

Install Skill

Shared

Installs to .agents/skills, used by Codex, Amp, Warp, Cursor, OpenCode, and more.

CodexAmp
Warp
CursorOpenCode
Cline
Gemini CLI
GitHub Copilot
Personal

Available across projects.

$npx skills-installer add @sickn33/antigravity-awesome-skills/invariant-guard --client shared
Project

Writes to .agents/skills.

$npx skills-installer add @sickn33/antigravity-awesome-skills/invariant-guard -p --client shared
Note: Review the skill instructions before using it.

SKILL.md

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