fix(agentkit): ensure URL is always included in Gemini and Vertex LLM configurations

src/agora_agent/agentkit/vendors/mllm.py

@@ -181,14 +181,12 @@ def to_config(self) -> Dict[str, Any]:
 
         config: Dict[str, Any] = {
             "vendor": "vertexai",
+            "url": self.options.url if self.options.url is not None else "",
             "project_id": self.options.project_id,
             "location": self.options.location,
             "adc_credentials_string": self.options.adc_credentials_string,
             "params": params,
         }
-
-        if self.options.url is not None:
-            config["url"] = self.options.url
         if self.options.greeting_message is not None:
             config["greeting_message"] = self.options.greeting_message
         if self.options.input_modalities is not None:
@@ -253,11 +251,9 @@ def to_config(self) -> Dict[str, Any]:
         config: Dict[str, Any] = {
             "vendor": "gemini",
             "api_key": self.options.api_key,
+            "url": self.options.url if self.options.url is not None else "",
             "params": params,
         }
-
-        if self.options.url is not None:
-            config["url"] = self.options.url
         if self.options.greeting_message is not None:
             config["greeting_message"] = self.options.greeting_message
         if self.options.input_modalities is not None:

tests/custom/test_agentkit_vendors.py

@@ -119,6 +119,19 @@ def test_vertex_ai_explicit_fields_override_additional_params():
     assert config["params"]["extra_key"] == "kept"
 
 
+def test_vertex_ai_defaults_url_to_empty_string():
+    from agora_agent.agentkit.vendors import VertexAI
+
+    config = VertexAI(
+        model="gemini-live-2.5-flash",
+        project_id="project-id",
+        location="us-central1",
+        adc_credentials_string="{}",
+    ).to_config()
+
+    assert config["url"] == ""
+
+
 def test_gemini_live_explicit_fields_override_additional_params():
     from agora_agent.agentkit.vendors import GeminiLive
 
@@ -135,6 +148,17 @@ def test_gemini_live_explicit_fields_override_additional_params():
     assert config["params"]["extra_key"] == "kept"
 
 
+def test_gemini_live_defaults_url_to_empty_string():
+    from agora_agent.agentkit.vendors import GeminiLive
+
+    config = GeminiLive(
+        api_key="key",
+        model="gemini-live-2.5-flash",
+    ).to_config()
+
+    assert config["url"] == ""
+
+
 def test_llm_greeting_configs_interruptable_serializes():
     config = OpenAI(
         api_key="openai-key",

tests/custom/test_request_body.py

@@ -1256,6 +1256,7 @@ def test_byok_gemini_live_mllm_params() -> None:
     props = build_properties(agent)
     assert props["mllm"]["vendor"] == "gemini"
     assert props["mllm"]["api_key"] == "gemini-key"
+    assert props["mllm"]["url"] == ""
     assert props["mllm"]["params"]["model"] == "gemini-live-2.5-flash"
 
 
@@ -1270,6 +1271,7 @@ def test_byok_vertex_ai_mllm_params() -> None:
     )
     props = build_properties(agent)
     assert props["mllm"]["vendor"] == "vertexai"
+    assert props["mllm"]["url"] == ""
     assert props["mllm"]["project_id"] == "my-project"
     assert props["mllm"]["location"] == "us-central1"
     assert props["mllm"]["adc_credentials_string"] == "{}"