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java-contract-testing

Validate OpenAPI specs and Pact contracts in CI pipelines.

1|Updated Jan 19, 2026
Search Tags:#openapi#microservices#contract-testing#ci#pact#api-compatibility
One-click install
npx skills add https://github.com/HZeroxium/cursorkit --skill java-contract-testing
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: java-contract-testing
Source: https://github.com/HZeroxium/cursorkit/tree/main/lib/skills/java-backend/java-contract-testing
Command: npx skills add https://github.com/HZeroxium/cursorkit --skill java-contract-testing

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Contract-driven development helps teams prevent breaking changes by validating OpenAPI specs and consumer contracts across microservices.

Core Features & Use Cases

  • OpenAPI-first contract checks and diff gates
  • Pact-based consumer contract testing and verification
  • CI integration to automatically block breaking changes

Quick Start

Run the CI gate to validate the OpenAPI spec against the main branch and verify consumer contracts before merging.

Frequently Asked Questions about java-contract-testing

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

FAQPage Schema
How do I prevent breaking OpenAPI changes in a microservices CI pipeline?▼

You can block breaking API changes in a microservices CI pipeline by enforcing gating rules that validate OpenAPI specs against the main branch and run Pact verification before merging. This automatically stops deployments that violate consumer contracts.

What is contract testing and when do I need it for API compatibility?▼

Contract testing is a validation method for ensuring API compatibility between microservices by checking OpenAPI diffs and consumer contracts. You need it when evolving APIs or publishing contracts to prevent breaking changes across provider and consumer sides.

How do I set up Pact verification for consumer contracts in CI?▼

Set up Pact verification by configuring a CI gate to verify consumer contracts against provider APIs before merging. The process applies gating rules to block deployments if contract validation fails, ensuring safe API evolution across microservices.

Does this support OpenAPI diff checks for both provider and consumer sides?▼

Yes, it supports OpenAPI diff checks and consumer contract verification across both provider and consumer sides. It validates OpenAPI specs and applies gating rules to block deployments with breaking changes in microservices that publish contracts.

Can I use this to gate deployments based on OpenAPI spec validation?▼

Yes, you can gate deployments by running CI checks that validate the OpenAPI spec against the main branch and verify consumer contracts. Deployments are automatically blocked if breaking changes or contract violations are detected before merging.

Why do I need consumer contract testing if I already validate OpenAPI specs?▼

Consumer contract testing is needed alongside OpenAPI spec validation because it verifies actual consumer expectations using Pact, not just schema correctness. It prevents breaking changes by ensuring provider APIs meet specific consumer contract requirements during CI.

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