fix: AgentCore Gateway now correctly returns 405 for GET requests

Author: clareliguori

e2e_tests/typescript/src/server_clients/automated_oauth.ts

@@ -520,20 +520,6 @@ export class AutomatedOAuthClient extends Server {
     const baseUrl = new URL(this.config.serverUrl);
     const transport = new StreamableHTTPClientTransport(baseUrl, {
       authProvider: this.oauthProvider,
-      // Override fetch to handle POST-only endpoints.
-      // This is a temporary workaround for AgentCore Gateways,
-      // which currently return 404 on GET requests, instead of the expected 405
-      fetch: async (url, init) => {
-        logger.debug(`Fetch request: ${init?.method || 'GET'} ${url}`);
-        if (init?.method === "GET") {
-          logger.debug("Blocking GET request, returning 405");
-          return new Response(null, {
-            status: 405,
-            statusText: "Method Not Allowed",
-          });
-        }
-        return fetch(url, init);
-      },
     });
 
     logger.debug("Connecting with automated OAuth...");

examples/chatbots/typescript/src/server_clients/interactive_oauth.ts

@@ -532,20 +532,6 @@ export class InteractiveOAuthClient extends Server {
     const baseUrl = new URL(this.config.serverUrl);
     const transport = new StreamableHTTPClientTransport(baseUrl, {
       authProvider: oauthProvider,
-      // Override fetch to handle POST-only endpoints
-      // This is a temporary workaround for AgentCore Gateways,
-      // which currently return 404 on GET requests, instead of the expected 405
-      fetch: async (url, init) => {
-        logger.debug(`Fetch request: ${init?.method || 'GET'} ${url}`);
-        if (init?.method === "GET") {
-          logger.debug("Blocking GET request, returning 405");
-          return new Response(null, {
-            status: 405,
-            statusText: "Method Not Allowed",
-          });
-        }
-        return fetch(url, init);
-      },
     });
 
     try {