Contract Test Generator

Name: OpenModels
Creator: OpenModels
License: https://github.com/openmodelsrun/openmodels

advancedtestingMin 32K context

Generates consumer-driven contract tests between services so that API providers and consumers stay compatible as they evolve independently. Produces Pact-style contracts, provider verification stubs, and CI wiring, and flags breaking changes before they reach production.

testing contract-testing pact microservices api integration

Use Cases

Creating consumer-driven contracts between two services
Generating provider verification tests from a contract
Detecting breaking API changes in CI
Migrating brittle end-to-end tests toward contract tests

Example Prompt

Here is a consumer that calls our /orders API and the provider's OpenAPI spec. Generate a
consumer-driven Pact contract, the matching provider verification test, and a CI step that fails
the build when the provider breaks the contract.

```
[paste consumer client code + OpenAPI spec]
```

Recommended Models

claude-opus-4-8 gpt-5-6-sol gemini-3-5-pro

Compatible Tools

claude-codecursorkiroany

Modalities

Input: code, text

→

Output: code, text

Author

OpenModels Community

@openmodelsrun