diff --git a/package-lock.json b/package-lock.json
index 307137c506..94f19f2123 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22333,9 +22333,9 @@
       }
     },
     "node_modules/@modelcontextprotocol/sdk": {
-      "version": "1.13.3",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.13.3.tgz",
-      "integrity": "sha512-bGwA78F/U5G2jrnsdRkPY3IwIwZeWUEfb5o764b79lb0rJmMT76TLwKhdNZOWakOQtedYefwIR4emisEMvInKA==",
+      "version": "1.16.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.16.0.tgz",
+      "integrity": "sha512-8ofX7gkZcLj9H9rSd50mCgm3SSF8C7XoclxJuLoV0Cz3rEQ1tv9MZRYYvJtm9n1BiEQQMzSmE/w2AEkNacLYfg==",
       "license": "MIT",
       "peer": true,
       "dependencies": {
@@ -48619,7 +48619,7 @@
         "@langchain/core": "^0.3.62",
         "@librechat/agents": "^2.4.67",
         "@librechat/data-schemas": "*",
-        "@modelcontextprotocol/sdk": "^1.13.3",
+        "@modelcontextprotocol/sdk": "^1.16.0",
         "axios": "^1.8.2",
         "diff": "^7.0.0",
         "eventsource": "^3.0.2",
diff --git a/packages/api/package.json b/packages/api/package.json
index f307634b45..ca561a3f85 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -72,7 +72,7 @@
     "@langchain/core": "^0.3.62",
     "@librechat/agents": "^2.4.67",
     "@librechat/data-schemas": "*",
-    "@modelcontextprotocol/sdk": "^1.13.3",
+    "@modelcontextprotocol/sdk": "^1.16.0",
     "axios": "^1.8.2",
     "diff": "^7.0.0",
     "eventsource": "^3.0.2",
diff --git a/packages/api/src/mcp/oauth/handler.ts b/packages/api/src/mcp/oauth/handler.ts
index ab9bbe46c1..adf1e24372 100644
--- a/packages/api/src/mcp/oauth/handler.ts
+++ b/packages/api/src/mcp/oauth/handler.ts
@@ -268,6 +268,19 @@ export class MCPOAuthHandler {
         /** Add state parameter with flowId to the authorization URL */
         authorizationUrl.searchParams.set('state', flowId);
         logger.debug(`[MCPOAuth] Added state parameter to authorization URL`);
+
+        if (resourceMetadata?.resource) {
+          authorizationUrl.searchParams.set('resource', resourceMetadata.resource);
+        } else {
+          logger.warn(
+            `[MCPOAuth] Resource metadata missing 'resource' property for ${serverName}. ` +
+              'This can cause issues with some Authorization Servers who expect a "resource" parameter.',
+          );
+        }
+
+        logger.debug(
+          `[MCPOAuth] Added resource parameter to authorization URL: ${resourceMetadata.resource}`,
+        );
       } catch (error) {
         logger.error(`[MCPOAuth] startAuthorization failed:`, error);
         throw error;
@@ -330,12 +343,27 @@ export class MCPOAuthHandler {
         throw new Error('Invalid flow metadata');
       }
 
+      let resource;
+      try {
+        if (metadata.resourceMetadata?.resource) {
+          resource = new URL(metadata.resourceMetadata.resource);
+          logger.debug(`[MCPOAuth] Resource URL for flow ${flowId}: ${resource.toString()}`);
+        }
+      } catch (error) {
+        logger.warn(
+          `[MCPOAuth] Invalid resource URL format for flow ${flowId}: '${metadata.resourceMetadata!.resource}'. ` +
+            `Error: ${error instanceof Error ? error.message : 'Unknown error'}. Proceeding without resource parameter.`,
+        );
+        resource = undefined;
+      }
+
       const tokens = await exchangeAuthorization(metadata.serverUrl, {
         metadata: metadata.metadata as unknown as SDKOAuthMetadata,
         clientInformation: metadata.clientInfo,
         authorizationCode,
         codeVerifier: metadata.codeVerifier,
         redirectUri: metadata.clientInfo.redirect_uris?.[0] || this.getDefaultRedirectUri(),
+        resource: resource,
       });
 
       logger.debug('[MCPOAuth] Raw tokens from exchange:', {