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contract-testing

Implement consumer-driven contract testing for microservices using Pact.

4|1|Updated Dec 30, 2025
Search Tags:#ci/cd#api#microservices#contract testing#pact#provider verification
One-click install
npx skills add https://github.com/doanchienthangdev/omgkit --skill contract-testing-doanchienthangdev
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: contract-testing
Source: https://github.com/doanchienthangdev/omgkit/tree/main/plugin/skills/microservices/contract-testing
Command: npx skills add https://github.com/doanchienthangdev/omgkit --skill contract-testing-doanchienthangdev

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires @pact-foundation/pact, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses the challenge of ensuring that different microservices can communicate correctly without the overhead of full integration tests, preventing costly runtime integration failures.

Core Features & Use Cases

  • Consumer-Driven Contracts: Define and verify interactions between services using Pact.
  • Schema Validation: Ensure data structures conform to expected formats.
  • Provider Verification: Automatically check if a service meets its consumers' expectations.
  • CI/CD Integration: Seamlessly incorporate contract testing into automated pipelines.
  • Use Case: In an e-commerce system, the OrderService needs to fetch user details from the UserService. This Skill ensures that UserService will always provide user data in the format OrderService expects, even as both services evolve independently.

Quick Start

Use the contract-testing skill to set up consumer-driven contract tests for your microservices.

Frequently Asked Questions about contract-testing

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

FAQPage Schema
How does consumer-driven contract testing prevent breaking changes in microservices?▼

Consumer-driven contract testing verifies provider adherence to consumer expectations using Pact, preventing costly runtime integration failures in distributed microservices without requiring full end-to-end integration tests.

How do I integrate provider verification into a CI/CD pipeline for API contract management?▼

Provider verification integrates into CI/CD pipelines by automatically checking if a service meets consumer expectations defined in Pact contracts, ensuring continuous API compatibility during automated deployments.

Can I use this contract testing approach to validate API schema between evolving services?▼

Contract testing validates API schema by ensuring data structures conform to expected formats, allowing services like OrderService and UserService to evolve independently while maintaining communication compatibility.

What is the best way to test microservices communication without full integration tests?▼

Consumer-driven contract testing using Pact is the best way to verify inter-service communication compatibility, eliminating the overhead of full integration tests while addressing risks of breaking changes in distributed systems.

Do I need Pact to perform schema validation and provider verification for my APIs?▼

Pact is required to implement consumer-driven contract testing, facilitating schema validation and provider verification to ensure your API provider meets consumer expectations.

When should I not use contract testing for my distributed system?▼

Contract testing is not suitable for verifying complex business logic or end-to-end workflows, as it strictly focuses on schema validation and communication compatibility between microservices rather than functional integration testing.

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