# OAI object model [](https://travis-ci.org/go-openapi/spec) <!-- [](https://ci.appveyor.com/project/casualjim/go-openapi/spec/branch/master) --> [](https://codecov.io/gh/go-openapi/spec) [](https://slackin.goswagger.io) [](https://raw.githubusercontent.com/go-openapi/spec/master/LICENSE) [](https://pkg.go.dev/github.com/go-openapi/spec) [](https://goreportcard.com/report/github.com/go-openapi/spec) The object model for OpenAPI specification documents. ### FAQ * What does this do? > 1. This package knows how to marshal and unmarshal Swagger API specifications into a golang object model > 2. It knows how to resolve $ref and expand them to make a single root document * How does it play with the rest of the go-openapi packages ? > 1. This package is at the core of the go-openapi suite of packages and [code generator](https://github.com/go-swagger/go-swagger) > 2. There is a [spec loading package](https://github.com/go-openapi/loads) to fetch specs as JSON or YAML from local or remote locations > 3. There is a [spec validation package](https://github.com/go-openapi/validate) built on top of it > 4. There is a [spec analysis package](https://github.com/go-openapi/analysis) built on top of it, to analyze, flatten, fix and merge spec documents * Does this library support OpenAPI 3? > No. > This package currently only supports OpenAPI 2.0 (aka Swagger 2.0). > There is no plan to make it evolve toward supporting OpenAPI 3.x. > This [discussion thread](https://github.com/go-openapi/spec/issues/21) relates the full story. > > An early attempt to support Swagger 3 may be found at: https://github.com/go-openapi/spec3