lightweight-verify

Generate assertions, invariants, and property-based tests for functions.

5|Updated Mar 4, 2026
One-click install
npx skills add https://github.com/nicholls-inc/claude-code-marketplace --skill lightweight-verify
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: lightweight-verify
Source: https://github.com/nicholls-inc/claude-code-marketplace/tree/main/crosscheck/skills/lightweight-verify
Command: npx skills add https://github.com/nicholls-inc/claude-code-marketplace --skill lightweight-verify

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

This Skill helps developers generate lightweight verification artifacts, such as assertions and property-based tests, for their code functions.

Core Features & Use Cases

  • Generate Contracts: Creates design-by-contract assertions and invariants for functions.
  • Testing & Validation: Produces property-based tests to validate code correctness across various inputs.
  • Use Case: A developer wants to add runtime assertions to a Python function to catch errors early during testing or debugging.

Quick Start

Describe your function or provide code, and ask the AI to generate verification artifacts suitable for your programming language.

Frequently Asked Questions about lightweight-verify

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I add assertions and invariants to my functions for early bug detection?

To add assertions and invariants for early bug detection, you can generate lightweight verification artifacts like design-by-contract assertions directly for your functions. This ensures code correctness by catching errors during debugging and initial validation phases.

What are property-based tests and when do I need them for code validation?

Property-based tests validate code correctness across various inputs by checking that specified properties always hold true. You need them during initial validation and code review to comprehensively verify function behavior and ensure reliability without writing individual test cases.

Can I generate verification artifacts across different programming languages?

Yes, you can generate verification artifacts across different programming languages. The tool facilitates adding validation and testing artifacts like assertions and invariants to functions regardless of the specific programming language you are using.

What is the best way to quickly create runtime checks for a Python function?

The best way to quickly create runtime checks is to provide your function code and generate suitable verification artifacts. This rapidly produces assertions and property-based tests to catch errors early during testing or debugging.

Does adding design-by-contract assertions slow down the debugging process?

Adding design-by-contract assertions does not slow down debugging; rather, it aids in early bug detection. By establishing invariants and property-based tests, it streamlines the initial validation phase and improves overall code correctness assurance.