API Contract Testing

API Contract Testing is a Quality skill for Claude Code, published by secondsky in claude-skills.

214 stars31 forkson secondsky/claude-skillsAdded 2026/09/04+1% in starsRepository updated 2026/09/03

claude-codeclaude-code-commandsclaude-code-hooksclaude-code-pluginclaude-code-pluginsclaude-code-skillclaude-code-skills

Install in seconds

Install API Contract Testing

Copy API Contract Testing into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/secondsky/claude-skills/tree/main/plugins/api-contract-testing/skills/api-contract-testing ~/.claude/skills/api-contract-testing

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/secondsky/claude-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: plugins/api-contract-testing/skills/api-contract-testing/SKILL.md in secondsky/claude-skills
Installs to: ~/.claude/skills/api-contract-testing
Collection: One of 24 skills cataloged from this repository
Category: Quality — 1557 skills

What API Contract Testing does

API Contract Testing verifies that services honor request and response contracts with consumer-driven tests, schema validation, and tools like Pact. Use it to test microservice communication, catch breaking changes, or validate OpenAPI specs.

API Contract Testing is cataloged under Quality on DirSkills. API Contract Testing comes from a repository tagged claude-code, claude-code-commands, claude-code-hooks, claude-code-plugin and claude-code-plugins.

Documentation

README

Excerpt

API Contract Testing

Verify that APIs honor their contracts between consumers and providers without requiring full integration tests.

Key Concepts

Term	Definition
Consumer	Service that calls an API
Provider	Service that exposes an API
Contract	Agreed request/response format
Pact	Consumer-driven contract testing tool
Schema	Structure definition (OpenAPI, JSON Schema)
Broker	Central repository for contracts

Pact Consumer Test (TypeScript)

This is the opening of the README. Read the full README on GitHub.

Frequently asked about API Contract Testing

What else does secondsky publish alongside API Contract Testing?
API Contract Testing is one of 24 skills that DirSkills catalogs from secondsky/claude-skills, the repository it ships in. Its siblings there include API Authentication, API Changelog & Versioning and API Design Principles. Each one is a separate skill with its own page in this directory, installs the same way API Contract Testing does, and is maintained by secondsky in that same repository. The rest of the collection is listed on the secondsky/claude-skills page.
How does API Contract Testing compare to other Quality skills?
API Contract Testing ranks #1424 by stars among the 1557 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of API Contract Testing against them. Open each page to compare what they document and how they install.