Generate OpenAPI Document in YAML Format

[w1am]

I am using the .NET 9 RC version of Microsoft.AspNetCore.OpenApi.

The default behavior of MapOpenApi seems to generate the OpenAPI document in JSON format. After reviewing the documentation, I couldn't find a way to configure the format to YAML.

Is this possible?

[martincostello]

There's no built-in ability to generate YAML for OpenAPI in .NET 9.

I've added the ability to do so to a library I've been working on if that's useful to you: https://github.com/martincostello/openapi-extensions

[rajashrimense]

Hi, where you updated this YAML format. Actually, my issue is in my workflow instead of format="openapi+json" i want to add format="openapi+yaml"

[martincostello]

I don't fully understand your question, but the code that sets the Content-Type header to signal the format is YAML is here.