formal-verification

Verify Pact modules against model-based properties and invariants.

1|1|Updated Jun 9, 2026

Search Tags:#model #invariants #formal-verification #conservation #pact #property-testing #counterexample

Ready to run

npx skills add https://github.com/Pact-Community-Organization/github-marketplace --skill formal-verification-pact-community-organization

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: formal-verification
Source: https://github.com/Pact-Community-Organization/github-marketplace/tree/main/skills/formal-verification
Command: npx skills add https://github.com/Pact-Community-Organization/github-marketplace --skill formal-verification-pact-community-organization

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Pact formal verification provides a framework to reason about function arguments, results, and database interactions using @model annotations, enabling invariant checks and counterexample analysis early in development.

Core Features & Use Cases

Property-based reasoning with @model on defun and defschema to encode correctness contracts.
Conservation proofs and reusable module properties to ensure data integrity.
Suitable for development, testing, and audit scenarios where formal guarantees are desired.

Quick Start

Annotate a sample defun with a simple @model property and then run typecheck to validate basic behavior.

Frequently Asked Questions about formal-verification

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

FAQPage Schema

How do I verify Pact module invariants to catch security issues early?▼

Pact formal verification lets you reason about function arguments and database interactions using @model annotations to encode correctness contracts. It checks invariants and analyzes counterexamples early in development.

Can I perform property-based testing on Pact smart contracts using type-checking?▼

How do I add conservation proofs to a Pact module schema?▼

Does Pact 5 support native formal verification for smart contracts?▼

What is the best way to find counterexamples in Pact function logic?▼

When should I use formal verification instead of standard testing for Pact modules?▼