What is the most universal way to get metadata about defined endpoint parameters?

Question

We can define that some of the endpoint parameters should be bound from query string: [FromQuery(Name= "someParamName")].

Is this mapping information stored anywhere in endpoint metadata?

I want to ensure that passed query string parameter is defined for the endpoint.

[HttpGet("foo")]
public IActionResult Foo([FromQuery("foo-param")]string param)
{
    ...
} 

[HttpGet("bar")]
public IActionResult Bar()
{
    ...
}

Here /foo?foo-param=something is fine, because foo-param is an expected one, but for /bar?foo-param=something url foo-param is foreign.

For controller endpoints I could locate ControllerActionDescriptor metadata entry, which has Parameters collection with BindingInfo containing all the data I need.

However, for mapped endpoints I get only request delegate information.

Sure, I could get ParameterInfo objects from delegate's Target method, and then check for [FromQuery] attribute, and so on, but it's quite a lot of low-level boilerplate code. I also see that EndpointsApiExplorer extacts this information and swagger generated correct documentation. Thus I assume there sohuld be a universal way to get the information about endpoint's parameters.