fix: Guard optional agent_name and add config assertions

Conditionally spread agent_name in configurable to avoid sending
undefined when agents have no name set. Add processStream config
assertions to openai and responses controller tests.

api/server/controllers/agents/__tests__/openai.spec.js

@@ -160,6 +160,20 @@ describe('OpenAIChatCompletionController', () => {
     };
   });
 
+  describe('processStream config', () => {
+    it('should pass agent_id and dynamic runName in config.configurable', async () => {
+      const api = require('@librechat/api');
+      await OpenAIChatCompletionController(req, res);
+
+      const run = await api.createRun.mock.results[0].value;
+      const config = run.processStream.mock.calls[0][1];
+
+      expect(config.runName).toBe('gpt-4');
+      expect(config.configurable.agent_id).toBe('agent-123');
+      expect(config.configurable).not.toHaveProperty('agent_name');
+    });
+  });
+
   describe('token usage recording', () => {
     it('should call recordCollectedUsage after successful non-streaming completion', async () => {
       await OpenAIChatCompletionController(req, res);

api/server/controllers/agents/__tests__/responses.unit.spec.js

@@ -189,6 +189,20 @@ describe('createResponse controller', () => {
     };
   });
 
+  describe('processStream config', () => {
+    it('should pass agent_id, agent_name, and dynamic runName in config.configurable', async () => {
+      const api = require('@librechat/api');
+      await createResponse(req, res);
+
+      const run = await api.createRun.mock.results[0].value;
+      const config = run.processStream.mock.calls[0][1];
+
+      expect(config.runName).toBe('Test Agent');
+      expect(config.configurable.agent_id).toBe('agent-123');
+      expect(config.configurable.agent_name).toBe('Test Agent');
+    });
+  });
+
   describe('token usage recording - non-streaming', () => {
     it('should call recordCollectedUsage after successful non-streaming completion', async () => {
       await createResponse(req, res);

api/server/controllers/agents/client.js

@@ -732,7 +732,7 @@ class AgentClient extends BaseClient {
           user_id: this.user ?? this.options.req.user?.id,
           hide_sequential_outputs: this.options.agent.hide_sequential_outputs,
           agent_id: this.options.agent.id,
-          agent_name: this.options.agent.name,
+          ...(this.options.agent.name != null && { agent_name: this.options.agent.name }),
           requestBody: {
             messageId: this.responseMessageId,
             conversationId: this.conversationId,

api/server/controllers/agents/openai.js

@@ -471,7 +471,7 @@ const OpenAIChatCompletionController = async (req, res) => {
         thread_id: conversationId,
         user_id: userId,
         agent_id: agent.id,
-        agent_name: agent.name,
+        ...(agent.name != null && { agent_name: agent.name }),
         user: createSafeUser(req.user),
         requestBody: {
           messageId: responseId,

api/server/controllers/agents/responses.js

@@ -487,7 +487,7 @@ const createResponse = async (req, res) => {
           thread_id: conversationId,
           user_id: userId,
           agent_id: agent.id,
-          agent_name: agent.name,
+          ...(agent.name != null && { agent_name: agent.name }),
           user: createSafeUser(req.user),
           requestBody: {
             messageId: responseId,
@@ -643,7 +643,7 @@ const createResponse = async (req, res) => {
           thread_id: conversationId,
           user_id: userId,
           agent_id: agent.id,
-          agent_name: agent.name,
+          ...(agent.name != null && { agent_name: agent.name }),
           user: createSafeUser(req.user),
           requestBody: {
             messageId: responseId,