OpenAPI.NET: The Biggest Update Ever
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Microsoft released OpenAPI.NET v2 and v3, the library's biggest updates since 2018. Version 2 adds OpenAPI 3.1 support with 50% faster parsing and 35% less memory usage through System.Text.Json integration. Version 3 introduces OpenAPI 3.2 support with enhanced media types, hierarchical tags, and extended parameter options. These updates impact major .NET tools like Swashbuckle, NSwag, and ASP.NET Core's native OpenAPI support in .NET 10.
Table of contents
Announcing the Biggest Update Ever: OpenAPI.NET v2 & v3The impactKey highlights from OpenAPI.NET v2Key highlights from OpenAPI.NET v3Upgrade guidesSupport going forwardShoutout to our key contributorsFeedbackSort: