Added overload for custom scheme

Author: localden

src/ModelContextProtocol.AspNetCore/Auth/McpAuthorizationExtensions.cs

@@ -18,12 +18,29 @@ public static class McpAuthenticationExtensions
     public static AuthenticationBuilder AddMcp(
         this AuthenticationBuilder builder,
         Action<McpAuthenticationOptions>? configureOptions = null)
+    {
+        return AddMcp(builder, "McpAuth", "MCP Authentication", configureOptions);
+    }
+
+    /// <summary>
+    /// Adds MCP authorization support to the application with a custom scheme name.
+    /// </summary>
+    /// <param name="builder">The authentication builder.</param>
+    /// <param name="authenticationScheme">The authentication scheme name to use.</param>
+    /// <param name="displayName">The display name for the authentication scheme.</param>
+    /// <param name="configureOptions">An action to configure MCP authentication options.</param>
+    /// <returns>The authentication builder for chaining.</returns>
+    public static AuthenticationBuilder AddMcp(
+        this AuthenticationBuilder builder,
+        string authenticationScheme,
+        string displayName,
+        Action<McpAuthenticationOptions>? configureOptions = null)
     {
         builder.Services.TryAddSingleton<ResourceMetadataService>();
 
         return builder.AddScheme<McpAuthenticationOptions, McpAuthenticationHandler>(
-            "McpAuth", 
-            "MCP Authentication", 
+            authenticationScheme, 
+            displayName, 
             configureOptions ?? (options => { }));
     }
 }