Verifies API contracts between services using consumer-driven contracts, schema validation, and tools like Pact. Use when testing microservices communication, preventing breaking changes, or validating OpenAPI specifications.
Installs just this skill. Get the whole plugin for auto-invocation.
⚡ How it fires
How this skill gets triggered: by you, by Claude, or both.
Fires itselfClaude auto-loads it when your prompt matches the work.
You can call itInvoke it directly when you want it.
Slash command/api-contract-testing
👁️ Context preview
The summary Claude sees to decide when to auto-load this skill.
Verifies API contracts between services using consumer-driven contracts, schema validation, and tools like Pact. Use when testing microservices communication, preventing breaking changes, or validating OpenAPI specifications.
📊 Stats
Stars194
Forks29
LanguageTypeScript
LicenseMIT
📦 Ships with claude-skills
</> SKILL.md
api-contract-testing.SKILL.md
---name: api-contract-testing
description: Verifies API contracts between services using consumer-driven contracts, schema validation, and tools like Pact. Use when testing microservices communication, preventing breaking changes, or validating OpenAPI specifications.
license: MIT
---# 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)
```typescript
import { PactV3, MatchersV3 } from '@pact-foundation/pact';
const provider = new PactV3({
consumer: 'OrderService',
provider: 'UserService'
});
describe('User API Contract', () => {
it('returns user by ID', async () => {
await provider
