Does it support both Python and JavaScript projects?

Yes, it includes built-in support for Bun/npm (JavaScript/TypeScript) and UV/Pip (Python) environments for managing testing dependencies.

Which testing frameworks does this skill support?

It supports Pact for contract testing, OpenAPI (Swagger) for specification validation, and Zod or AJV for schema validation.

What is API contract testing?

API contract testing is a technique to ensure that a provider (API) and a consumer (client) agree on the data format and behavior, preventing integration failures before deployment.

How does it handle breaking changes?

The skill can configure tools like oasdiff in your CI/CD pipeline to flag any modifications to your API that would break existing consumer expectations.

Can I run this in a CI environment?

Yes, you can use the --check-only flag to generate compliance reports and status checks without making modifications, making it ideal for build pipeline gates.

API Contract & Schema Testing

Name: API Contract & Schema Testing
Author: laurigates

bylaurigates

•

API Development

Configures robust API contract testing, OpenAPI validation, and schema checks to prevent breaking changes in microservices.

The API Contract & Schema Testing skill automates the setup and maintenance of API testing infrastructure using Pact, OpenAPI, and JSON Schema. It helps developers ensure reliability across distributed systems by detecting breaking changes in CI/CD pipelines, validating requests and responses against specifications, and maintaining strict consumer-provider agreements. Whether you are auditing existing compliance or bootstrapping a full contract testing suite from scratch, this skill provides the domain-specific configurations and tools required for professional-grade API stability.

Key Features

0110 GitHub stars

02Schema testing setup using Zod or AJV for data validation

03Automated Pact consumer and provider contract test configuration

04CI/CD integration for automated breaking change detection on PRs

05OpenAPI specification validation for request/response integrity

06Comprehensive API testing compliance reporting and auditing

Use Cases

01Automating OpenAPI documentation validation against actual code implementation

02Adding breaking change detection gates to GitHub Actions workflows

03Establishing contract tests between microservices to prevent deployment failures

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add laurigates/claude-plugins configure-api-tests

For use in Claude.ai and ChatGPT

Download Skill