counterexample-generator
Automated search for counterexamples to mathematical conjectures
Profile →npx skills add a5c-ai/babysitter --skill counterexample-generator --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Counterexample Generator ## Purpose Provides automated search capabilities for finding counterexamples to mathematical conjectures and validating proof attempts. ## Capabilities - Random testing with intelligent sampling - SMT-based counterexample search - Quickcheck-style property testing - Boundary case enumeration - Finite model finding (Nitpick, Quickcheck) ## Usage Guidelines 1. **Property Specification**: Define testable properties formally 2. **Sampling Strategy**: Choose appropriate random distributions 3. **Constraint Solving**: Use SMT for structured search 4. **Boundary Testing**: Exhaustively check small cases ## Tools/Libraries - Z3 - CVC5 - Quickcheck - Nitpick
- Purpose
- Capabilities
- Usage Guidelines
- Tools/Libraries
What does the counterexample-generator skill do?
Automated search for counterexamples to mathematical conjectures
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill counterexample-generator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.