Contract Test Generator Skill Skill

Contract Test Generator Skill

Generates contract tests for API migrations, supporting consumer-driven contracts, provider verification, and breaking change detection.

Purpose

Enable API contract testing for:

Consumer contract generation
Provider verification
Schema validation
Breaking change detection
Mock server generation

Capabilities

1. Consumer Contract Generation

Generate from API usage
Extract from tests
Build from specs
Support multiple formats

2. Provider Verification

Verify against contracts
Test all consumers
Check compatibility
Document failures

3. Schema Validation

Validate request schemas
Check response schemas
Verify data types
Enforce constraints

4. Breaking Change Detection

Detect field removals
Find type changes
Identify required additions
Flag compatibility issues

5. Mock Server Generation

Generate from contracts
Support stub responses
Handle scenarios
Enable development isolation

6. Contract Versioning

Track contract versions
Manage compatibility
Support migrations
Document changes

Tool Integrations

| Tool | Purpose | Integration Method | |------|---------|-------------------| | Pact | Consumer-driven contracts | CLI | | Spring Cloud Contract | Java contracts | CLI | | Dredd | API validation | CLI | | Prism | Mock server | CLI | | WireMock | Mock server | CLI |

Output Schema

{
  "generationId": "string",
  "timestamp": "ISO8601",
  "contracts": [
    {
      "consumer": "string",
      "provider": "string",
      "interactions": [
        {
          "description": "string",
          "request": {},
          "response": {}
        }
      ]
    }
  ],
  "verification": {
    "passed": "boolean",
    "results": []
  },
  "artifacts": {
    "contractFiles": [],
    "mockServerConfig": "string"
  }
}

Integration with Migration Processes

api-modernization: Contract verification
monolith-to-microservices: Service contracts

Related Skills

openapi-generator: Spec generation
api-compatibility-analyzer: Breaking changes

Related Agents

regression-detector: Regression prevention
cross-team-integrator: Contract coordination

Agent Skills: Contract Test Generator Skill

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Skill Files