public interface ISecurityContext
{
        bool IsAnonymous { get; }

        string UserRole { get; }
}

using Microsoft.AspNetCore.Http;
using System.Linq;

public class SecurityContext : ISecurityContext
{
    private readonly bool anonymous;
    private readonly string userRole;

    public bool IsAnonymous => anonymous;

    public string UserRole => userRole;

    public SecurityContext(IHttpContextAccessor context)
    {
        var headers = context.HttpContext.Request.Headers;

        headers.TryGetValue("X-IsAnonymous", out var anonymousValues);
        int.TryParse(anonymousValues.FirstOrDefault(), out anonymous);

        headers.TryGetValue("X-UserRole", out var userRoleValues);
        int.TryParse(userRoleValues.FirstOrDefault(), out userRole);
    }
}

class SomeRepository : ISomeRepository
{
    private readonly ISecurityContext securityContext;

    public SomeRepository(ISecurityContext securityContext)
    {
        this.securityContext = securityContext;
    }
}

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddHttpContextAccessor();

    // Register application services.
    services.AddScoped<ISecurityContext, SecurityContext>();
    services.AddScoped<ISomeRepository, SomeRepository>();
}