Set a different media type for 401 error code using Swashbuckle

Question

Is it possible to configure Swashbuckle to produce a different media type for a specific HTTP error code 401 in Swagger UI?

I want the media type for the 400 error code to be application/JSON, but for 401, it is text/HTML. Is there a way to achieve this?

Annotations above controller,

[Authorize]
[ApiController]
[ApiVersion("1.0")]
[Route("[controller]")]
[Route("v{version:apiVersion}/[controller]")]
[Produces("application/json")]
public class MyController : ControllerBase
{
}

Annotations above my method,

    [ProducesResponseType(StatusCodes.Status201Created)]
    [ProducesResponseType(StatusCodes.Status400BadRequest)]
    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
    [HttpPost]
    public async Task<ActionResult<MyModel>> PostAsync(MyRequest myRequest)
    {
}

Answer 1

Have you tried SwaggerResponse attribute, it derives from ProducesResponseType and has been enhanced to support adding the content media type:

    [SwaggerResponse(StatusCodes.Status201Created, "Successfully created something", typeof(MyModel), "application/json")]
    [SwaggerResponse(StatusCodes.Status401Unauthorized, "Unauthorized", typeof(string), "text/html")]
    [SwaggerResponse(StatusCodes.Status400BadRequest, "Invalid request", typeof(string), "text/html")]
    [SwaggerResponse(StatusCodes.Status500InternalServerError, "Internal Server Error", typeof(string), "text/html")]

It is part of the nuget package: Swashbuckle.AspNetCore.Annotations