Fix tool_choice issue (#2543)

## Description

We default tool_choice for teams in the different modes. Users need to
be able to choose whether it needs to be required or not.

---

## Type of change

Please check the options that are relevant:

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Model update (Addition or modification of models)
- [ ] Other (please describe):

---

## Checklist

- [ ] Adherence to standards: Code complies with Agno’s style guidelines
and best practices.
- [ ] Formatting and validation: You have run `./scripts/format.sh` and
`./scripts/validate.sh` to ensure code is formatted and linted.
- [ ] Self-review completed: A thorough review has been performed by the
contributor(s).
- [ ] Documentation: Docstrings and comments have been added or updated
for any complex logic.
- [ ] Examples and guides: Relevant cookbook examples have been included
or updated (if applicable).
- [ ] Tested in a clean environment: Changes have been tested in a clean
environment to confirm expected behavior.
- [ ] Tests (optional): Tests have been added or updated to cover any
new or changed functionality.

---

## Additional Notes

Include any deployment notes, performance implications, security
considerations, or other relevant information (e.g., screenshots or logs
if applicable).

Author: dirkbrnd

cookbook/examples/teams/route/multi_language_team.py

@@ -5,11 +5,6 @@
 from agno.models.openai import OpenAIChat
 from agno.team.team import Team
 
-english_agent = Agent(
-    name="English Agent",
-    role="You only answer in English",
-    model=OpenAIChat(id="gpt-4o"),
-)
 japanese_agent = Agent(
     name="Japanese Agent",
     role="You only answer in Japanese",
@@ -41,7 +36,6 @@
     mode="route",
     model=OpenAIChat("gpt-4o"),
     members=[
-        english_agent,
         spanish_agent,
         japanese_agent,
         french_agent,
@@ -52,8 +46,9 @@
     instructions=[
         "Identify the language of the user's question and direct it to the appropriate language agent.",
         "Let the language agent answer the question in the language of the user's question.",
-        "If the user asks in a language whose agent is not a team member, respond in English with:",
-        "'I only answer in the following languages: English, Spanish, Japanese, French and German. Please ask your question in one of these languages.'",
+        "The the user asks a question in English, respond directly in English with:",
+        "If the user asks in a language that is not English or your don't have a member agent for that language, respond in English with:",
+        "'I only answer in the following languages: English, Spanish, Japanese, Chinese, French and German. Please ask your question in one of these languages.'",
         "Always check the language of the user's input before routing to an agent.",
         "For unsupported languages like Italian, respond in English with the above message.",
     ],

libs/agno/agno/team/team.py

@@ -134,6 +134,13 @@ class Team:
 
     # Show tool calls in Team response. This sets the default for the team.
     show_tool_calls: bool = True
+    # Controls which (if any) tool is called by the team model.
+    # "none" means the model will not call a tool and instead generates a message.
+    # "auto" means the model can pick between generating a message or calling a tool.
+    # Specifying a particular function via {"type: "function", "function": {"name": "my_function"}}
+    #   forces the model to call that tool.
+    # "none" is the default when no tools are present. "auto" is the default if tools are present.
+    tool_choice: Optional[Union[str, Dict[str, Any]]] = None
 
     # --- Structured output ---
     # Response model for the team response
@@ -197,6 +204,7 @@ def __init__(
         share_member_interactions: bool = False,
         read_team_history: bool = False,
         show_tool_calls: bool = True,
+        tool_choice: Optional[Union[str, Dict[str, Any]]] = None,
         response_model: Optional[Type[BaseModel]] = None,
         use_json_mode: bool = False,
         parse_response: bool = True,
@@ -243,7 +251,9 @@ def __init__(
         self.share_member_interactions = share_member_interactions
 
         self.read_team_history = read_team_history
+
         self.show_tool_calls = show_tool_calls
+        self.tool_choice = tool_choice
 
         self.response_model = response_model
         self.use_json_mode = use_json_mode
@@ -477,7 +487,7 @@ def run(
                     files=files,  # type: ignore
                 )
                 _built_in_tools.append(forward_task_func)
-                self.model.tool_choice = "required"  # type: ignore
+                
             elif self.mode == "coordinate":
                 _built_in_tools.append(
                     self.get_transfer_task_function(
@@ -489,7 +499,6 @@ def run(
                         files=files,  # type: ignore
                     )
                 )
-                self.model.tool_choice = "auto"  # type: ignore
 
                 if self.enable_agentic_context:
                     _built_in_tools.append(self.set_team_context)
@@ -503,7 +512,6 @@ def run(
                     files=files,  # type: ignore
                 )
                 _built_in_tools.append(run_member_agents_func)
-                self.model.tool_choice = "auto"  # type: ignore
 
                 if self.enable_agentic_context:
                     _built_in_tools.append(self.set_team_context)
@@ -3141,6 +3149,10 @@ def _configure_model(self, show_tool_calls: bool = False) -> None:
         # Set show_tool_calls on the Model
         self.model.show_tool_calls = show_tool_calls
 
+        # Set tool_choice on the Model
+        if self.tool_choice is not None:
+            self.model.tool_choice = self.tool_choice
+
     def _add_tools_to_model(self, model: Model, tools: List[Union[Function, Callable]]) -> None:
         # We have to reset for every run, because we will have new images/audio/video to attach
         self._functions_for_model = {}