fix(samples): use configurable model name to resolve 404 errors in triaging agents

contributing/samples/adk_answering_agent/agent.py

@@ -15,6 +15,7 @@
 from adk_answering_agent.gemini_assistant.agent import root_agent as gemini_assistant_agent
 from adk_answering_agent.settings import BOT_RESPONSE_LABEL
 from adk_answering_agent.settings import IS_INTERACTIVE
+from adk_answering_agent.settings import LLM_MODEL_NAME
 from adk_answering_agent.settings import OWNER
 from adk_answering_agent.settings import REPO
 from adk_answering_agent.settings import VERTEXAI_DATASTORE_ID
@@ -38,7 +39,7 @@
 
 
 root_agent = Agent(
-    model="gemini-2.5-pro",
+    model=LLM_MODEL_NAME,
     name="adk_answering_agent",
     description="Answer questions about ADK repo.",
     instruction=f"""

contributing/samples/adk_answering_agent/settings.py

@@ -39,6 +39,7 @@
 
 OWNER = os.getenv("OWNER", "google")
 REPO = os.getenv("REPO", "adk-python")
+LLM_MODEL_NAME = os.getenv("LLM_MODEL_NAME", "gemini-2.5-flash")
 BOT_RESPONSE_LABEL = os.getenv("BOT_RESPONSE_LABEL", "bot responded")
 DISCUSSION_NUMBER = os.getenv("DISCUSSION_NUMBER")
 

contributing/samples/adk_issue_formatting_agent/agent.py

@@ -17,6 +17,7 @@
 
 from adk_issue_formatting_agent.settings import GITHUB_BASE_URL
 from adk_issue_formatting_agent.settings import IS_INTERACTIVE
+from adk_issue_formatting_agent.settings import LLM_MODEL_NAME
 from adk_issue_formatting_agent.settings import OWNER
 from adk_issue_formatting_agent.settings import REPO
 from adk_issue_formatting_agent.utils import error_response
@@ -132,7 +133,7 @@ def list_comments_on_issue(issue_number: int) -> dict[str, any]:
 
 
 root_agent = Agent(
-    model="gemini-2.5-pro",
+    model=LLM_MODEL_NAME,
     name="adk_issue_formatting_assistant",
     description="Check ADK issue format and content.",
     instruction=f"""

contributing/samples/adk_issue_formatting_agent/settings.py

@@ -26,6 +26,7 @@
 
 OWNER = os.getenv("OWNER", "google")
 REPO = os.getenv("REPO", "adk-python")
+LLM_MODEL_NAME = os.getenv("LLM_MODEL_NAME", "gemini-2.5-flash")
 EVENT_NAME = os.getenv("EVENT_NAME")
 ISSUE_NUMBER = os.getenv("ISSUE_NUMBER")
 ISSUE_COUNT_TO_PROCESS = os.getenv("ISSUE_COUNT_TO_PROCESS")

contributing/samples/adk_pr_triaging_agent/agent.py

@@ -17,6 +17,7 @@
 
 from adk_pr_triaging_agent.settings import GITHUB_BASE_URL
 from adk_pr_triaging_agent.settings import IS_INTERACTIVE
+from adk_pr_triaging_agent.settings import LLM_MODEL_NAME
 from adk_pr_triaging_agent.settings import OWNER
 from adk_pr_triaging_agent.settings import REPO
 from adk_pr_triaging_agent.utils import error_response
@@ -220,7 +221,7 @@ def add_comment_to_pr(pr_number: int, comment: str) -> dict[str, Any]:
 
 
 root_agent = Agent(
-    model="gemini-2.5-pro",
+    model=LLM_MODEL_NAME,
     name="adk_pr_triaging_assistant",
     description="Triage ADK pull requests.",
     instruction=f"""

contributing/samples/adk_pr_triaging_agent/settings.py

@@ -27,6 +27,7 @@
 
 OWNER = os.getenv("OWNER", "google")
 REPO = os.getenv("REPO", "adk-python")
+LLM_MODEL_NAME = os.getenv("LLM_MODEL_NAME", "gemini-2.5-flash")
 PULL_REQUEST_NUMBER = os.getenv("PULL_REQUEST_NUMBER")
 
 IS_INTERACTIVE = os.environ.get("INTERACTIVE", "1").lower() in ["true", "1"]

contributing/samples/adk_triaging_agent/agent.py

@@ -16,6 +16,7 @@
 
 from adk_triaging_agent.settings import GITHUB_BASE_URL
 from adk_triaging_agent.settings import IS_INTERACTIVE
+from adk_triaging_agent.settings import LLM_MODEL_NAME
 from adk_triaging_agent.settings import OWNER
 from adk_triaging_agent.settings import REPO
 from adk_triaging_agent.utils import error_response
@@ -244,7 +245,7 @@ def change_issue_type(issue_number: int, issue_type: str) -> dict[str, Any]:
 
 
 root_agent = Agent(
-    model="gemini-2.5-pro",
+    model=LLM_MODEL_NAME,
     name="adk_triaging_assistant",
     description="Triage ADK issues.",
     instruction=f"""

contributing/samples/adk_triaging_agent/settings.py

@@ -26,6 +26,7 @@
 
 OWNER = os.getenv("OWNER", "google")
 REPO = os.getenv("REPO", "adk-python")
+LLM_MODEL_NAME = os.getenv("LLM_MODEL_NAME", "gemini-2.5-flash")
 EVENT_NAME = os.getenv("EVENT_NAME")
 ISSUE_NUMBER = os.getenv("ISSUE_NUMBER")
 ISSUE_TITLE = os.getenv("ISSUE_TITLE")