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contract-testing

Configure consumer-driven contract testing with Pact for microservices.

5|1|Updated Jun 17, 2026
Search Tags:#microservices#contract-testing#ci-cd#pact#provider-verification#api-compatibility#message-pacts
One-click install
npx skills add https://github.com/roanbrasil/engineer-grade-agent-skills --skill contract-testing-roanbrasil
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: contract-testing
Source: https://github.com/roanbrasil/engineer-grade-agent-skills/tree/main/skills/contract-testing
Command: npx skills add https://github.com/roanbrasil/engineer-grade-agent-skills --skill contract-testing-roanbrasil

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill eliminates the pain of brittle, slow, and flaky integration tests between microservices that require all dependent services to be running, which makes local testing difficult and causes cascading test failures when any service is down.

Core Features & Use Cases

  • Consumer-Driven Contract Setup: Configure Pact for consumer-driven contract testing between microservices, including mock server setup and contract generation.
  • Provider Verification & CI Integration: Set up provider verification tests and CI gates to catch breaking API changes before deployment, using Pact Broker for contract storage and can-i-deploy checks.
  • Async & Event-Driven Support: Implement message pacts for Kafka, SQS, and other async messaging systems to validate event schema compatibility between event producers and consumers. Use case: A team with independently deployed order and product microservices can use this Skill to replace flaky end-to-end integration tests with fast, isolated contract tests that prevent breaking changes from reaching production.

Quick Start

Use the contract-testing skill to set up consumer-driven Pact tests for your microservices, configure the Pact broker for contract storage, and add CI gates that block deployments breaking existing consumer contracts.

Frequently Asked Questions about contract-testing

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

FAQPage Schema
How do I fix flaky microservices integration tests without running all dependent services?▼

Consumer-driven contract testing with Pact replaces flaky integration tests by generating and verifying isolated API contracts, ensuring microservices compatibility without requiring full integrated test environments.

How do I set up provider verification and CI gates for Pact contract testing?▼

Set up provider verification tests to validate API compatibility against consumer contracts, then configure CI gates using Pact Broker can-i-deploy checks to block deployments with breaking changes.

Does Pact contract testing support async message pacts for event-driven architectures?▼

Message pact testing validates event schema compatibility between producers and consumers in Kafka, SQS, and other async messaging systems, supporting event-driven architectures without running full integrations.

What is consumer-driven contract testing and when do I need it for microservices?▼

Consumer-driven contract testing is a pattern where consumers define expected API interactions as contracts, needed when polyglot microservice teams require fast, isolated validation of service boundaries.

Can I use contract testing for polyglot microservice teams with different tech stacks?▼

Contract testing applies to polyglot microservice teams by validating API and async message compatibility independently across service boundaries, preventing breaking API changes regardless of the underlying technology.

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