Add the MCP auth scenario

Author: justinyoo

docs/guides/tools-connectors-mcp/responses/authentication.cs

@@ -0,0 +1,28 @@
+// SAMPLE: Generate response from remote MCP through Responses API
+// PAGE: https://platform.openai.com/docs/guides/tools-connectors-mcp#authentication
+// GUIDANCE: Instructions to run this code: https://aka.ms/oai/net/start
+#pragma warning disable OPENAI001
+
+#:package OpenAI@2.*
+#:property PublishAot=false
+
+using OpenAI.Responses;
+
+string authToken = Environment.GetEnvironmentVariable("STRIPE_OAUTH_ACCESS_TOKEN")!;
+string key = Environment.GetEnvironmentVariable("OPENAI_API_KEY")!;
+OpenAIResponseClient client = new(model: "gpt-5", apiKey: key);
+
+ResponseCreationOptions options = new();
+options.Tools.Add(ResponseTool.CreateMcpTool(
+    serverLabel: "stripe",
+    serverUri: new Uri("https://mcp.stripe.com"),
+    authorizationToken: authToken
+));
+
+OpenAIResponse response = (OpenAIResponse)client.CreateResponse([
+    ResponseItem.CreateUserMessageItem([
+        ResponseContentPart.CreateInputTextPart("Create a payment link for $20")
+    ])
+], options);
+
+Console.WriteLine(response.GetOutputText());