OpenAPI Mock

What OpenAPI Mock is

OpenAPI Mock is a free, open-source API mock server that generates response data from OpenAPI specifications. It supports OpenAPI 3.x in JSON and YAML, with specifications loaded from a local file or URL. Responses can be based on schemas or examples; configuration can ignore examples, use them when available, or rely on them alone. The server supports HTTP and content negotiation through the Accept header. JSON responses are supported, while XML generation is basic and does not include XML tags. It can run as a standalone application on Linux or Windows, in Docker, or through documented Docker Compose usage. Settings can come from command-line options, environment variables, or YAML and JSON configuration files. A validate command can check whether a specification is processable, including in Continuous Integration, but reports critical errors without details. Local references work, while remote and URL references do not. Request-data validation and forcing a custom response schema are unsupported. Combined schema types are supported with exceptions for the not tag and discriminator; response schemas are detected automatically. The project uses the MIT License.