If there is only one agent in the project, treat it as a default when adding a task.

agentstack/frameworks/__init__.py

@@ -72,6 +72,12 @@ def add_task(self, task: TaskConfig) -> None:
         """
         ...
 
+    def get_task_names(self) -> list[str]:
+        """
+        Get a list of task names in the user's project.
+        """
+        ...
+
 
 def get_framework_module(framework: str) -> FrameworkModule:
     """
@@ -132,3 +138,9 @@ def add_task(task: TaskConfig):
     """
     return get_framework_module(get_framework()).add_task(task)
 
+def get_task_names() -> list[str]:
+    """
+    Get a list of task names in the user's project.
+    """
+    return get_framework_module(get_framework()).get_task_names()
+

agentstack/generation/task_generation.py

@@ -15,6 +15,11 @@ def add_task(
 ):
     verify_agentstack_project()
 
+    agents = frameworks.get_agent_names()
+    if not agent and len(agents) == 1:
+        # if there's only one agent, use it by default
+        agent = agents[0]
+
     task = TaskConfig(task_name)
     with task as config:
         config.description = description or "Add your description here"

tests/test_generation_tasks.py

@@ -8,7 +8,9 @@
 from agentstack.conf import ConfigFile, set_path
 from agentstack.exceptions import ValidationError
 from agentstack import frameworks
+from agentstack.tasks import TaskConfig
 from agentstack.generation.task_generation import add_task
+from agentstack.generation.agent_generation import add_agent
 
 BASE_PATH = Path(__file__).parent
 
@@ -60,3 +62,13 @@ def test_add_agent_exists(self):
                 expected_output='expected_output',
                 agent='agent',
             )
+
+    def test_add_task_selects_single_agent(self):
+        add_task(
+            'task_test',
+            description='description',
+            expected_output='expected_output',
+        )
+
+        task_config = TaskConfig('task_test')
+        assert task_config.agent == 'test_agent'  # defined in entrypoint_max.py