Python: Fix type compatibility for Any source types

python/packages/core/agent_framework/_workflows/_typing_utils.py

@@ -471,6 +471,11 @@ def is_type_compatible(source_type: type | UnionType | Any, target_type: type |
     if target_type is Any:
         return True
 
+    # Case 0b: source_type is Any - the value can be of any type, so it is compatible with every
+    # target, the same way static type checkers treat Any.
+    if source_type is Any:
+        return True
+
     # Case 1: exact type match
     if source_type == target_type:
         return True

python/packages/core/tests/workflow/test_typing_utils.py

@@ -425,6 +425,10 @@ def test_type_compatibility_basic() -> None:
     # Any compatibility
     assert is_type_compatible(str, Any)
     assert is_type_compatible(list[int], Any)
+    assert is_type_compatible(Any, str)
+    assert is_type_compatible(Any, list[int])
+    assert is_type_compatible(Any, Union[str, int])
+    assert is_type_compatible(list[Any], list[str])
 
     # Subclass compatibility
     class Animal:

python/packages/core/tests/workflow/test_validation.py

@@ -121,6 +121,16 @@ def test_type_compatibility_with_any_type_passes():
     assert workflow is not None
 
 
+def test_type_compatibility_from_any_source_passes():
+    """An executor declaring WorkflowContext[Any] can send to a typed executor."""
+    any_executor = AnyExecutor(id="any_executor")
+    string_executor = StringExecutor(id="string_executor")
+
+    workflow = WorkflowBuilder(start_executor=any_executor).add_edge(any_executor, string_executor).build()
+
+    assert workflow is not None
+
+
 def test_type_compatibility_with_no_output_types():
     no_output_executor = NoOutputTypesExecutor(id="no_output")
     string_executor = StringExecutor(id="string_executor")