microsoft/OpenAPI.NET

Health v2 · maintenance only

Adoption not part of the score

1608 stars · 286 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

OpenAPI.NET is a .NET SDK providing an object model for OpenAPI documents, with readers and writers for OpenAPI JSON and YAML in V2 and V3 formats. It includes companion packages like a YAML reader and the Hidi CLI for converting OpenAPI descriptions.

Use cases

• parse openapi json or yaml files in .net
• generate openapi documents programmatically in c#
• convert openapi between v2 and v3 formats
• serialize openapi document model to json and yaml
• build tooling that reads or writes swagger specs
• convert other api description formats into openapi

When to choose

• you need a shared .NET object model for OpenAPI documents
• you want to read or write OpenAPI 2.x/3.x JSON and YAML in .NET
• you are building API tooling, generators, or converters on the OpenAPI spec

When to avoid

• you need OpenAPI tooling outside the .NET ecosystem
• you want automatic OpenAPI generation from running ASP.NET code without a custom model

Facets

library · maturity active

serialization parser api-framework sdk apis developer-tools web-development documentation dotnet cross-platform openapi swagger json yaml api-documentation object-model

Member repositories

For agents

markdown · JSON · MCP: product_card(name="microsoft/OpenAPI.NET")