OpenAPI.NET
The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model.
C#Install
Supported APIs (1)
This is the API for OpenAPI space.
Other C# SDKs
Version history All releases ↗
## [3.4.0](https://github.com/microsoft/OpenAPI.NET/compare/v3.3.1...v3.4.0) (2026-03-04) ### Features * **library:** preserve PatternProperties as…
## [2.7.0](https://github.com/microsoft/OpenAPI.NET/compare/v2.6.1...v2.7.0) (2026-03-05) ### Features * add UnevaluatedPropertiesSchema support to…
## [3.3.1](https://github.com/microsoft/OpenAPI.NET/compare/v3.3.0...v3.3.1) (2026-01-22) ### Features * **models:** add shared Content interf…
## [2.6.1](https://github.com/microsoft/OpenAPI.NET/compare/v2.6.0...v2.6.1) (2026-01-22) ### Bug Fixes * broken binary compatibility due to interf…
## [3.3.0](https://github.com/microsoft/OpenAPI.NET/compare/v3.2.0...v3.3.0) (2026-01-21) ### Features * **models:** add shared Content interface (…
## [2.6.0](https://github.com/microsoft/OpenAPI.NET/compare/v2.5.0...v2.6.0) (2026-01-21) ### Features * **models:** add shared Content interface (…
## [3.2.0](https://github.com/microsoft/OpenAPI.NET/compare/v3.1.3...v3.2.0) (2026-01-19) ### Features * hidi validate command now logs warnings ([…
## [2.5.0](https://github.com/microsoft/OpenAPI.NET/compare/v2.4.3...v2.5.0) (2026-01-19) ### Features * hidi validate command now logs warnings ([…