dotnet-openapi
dotnet-openapi
OpenAPI/Swagger integration for ASP.NET Core. Microsoft.AspNetCore.OpenApi is the recommended first-party approach for .NET 9+ and is the default in new project templates. Swashbuckle is no longer actively maintained; existing projects using Swashbuckle should plan migration. NSwag remains an alternative for client generation and advanced scenarios.
Scope
- Microsoft.AspNetCore.OpenApi setup and multi-document configuration
- Document, operation, and schema transformers
- Swashbuckle migration steps and filter-to-transformer mapping
- NSwag document generation and client generation
- OpenAPI 3.1 support in .NET 10
Out of scope
- Minimal API endpoint patterns (route groups, filters, TypedResults) -- see [skill:dotnet-minimal-apis]
- API versioning strategies -- see [skill:dotnet-api-versioning]
- Authentication and authorization -- see [skill:dotnet-api-security]
Cross-references: [skill:dotnet-minimal-apis] for endpoint patterns that generate OpenAPI metadata, [skill:dotnet-api-versioning] for versioned OpenAPI documents.
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