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abstract-invariant-generator

100 / 100 · Low risk

Fine to try.

By ArabelaTso/Skills-4-SE (GitHub) · coding · 260 stars · scanned at commit 4f38503

Uses abstract interpretation to automatically infer loop invariants, function preconditions, and postconditions for formal verification. Generates invariants that capture program behavior and support correctness proofs in Dafny, Isabelle, Coq, and other verification systems. Use when adding formal specifications to code, generating verification conditions, inferring contracts for functions, or discovering loop invariants for proofs.

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/'abstract-invariant-generator' ] || [ -L ~/.agents/skills/'abstract-invariant-generator' ]; then echo 'A skill folder named abstract-invariant-generator already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/ArabelaTso/Skills-4-SE' "$d" && git -C "$d" checkout --quiet '4f38503747e0617504bce5329283ef837d375c09' -- 'skills/abstract-invariant-generator' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/abstract-invariant-generator' ~/.agents/skills/'abstract-invariant-generator' && 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/'abstract-invariant-generator' ~/.claude/skills/'abstract-invariant-generator' (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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