diff --git a/arcade/arcade/core/catalog.py b/arcade/arcade/core/catalog.py
index d0a1825f..6fe3296e 100644
--- a/arcade/arcade/core/catalog.py
+++ b/arcade/arcade/core/catalog.py
@@ -575,7 +575,14 @@ def extract_field_info(param: inspect.Parameter) -> ToolParamInfo:
     elif len(str_annotations) == 1:
         param_info.description = str_annotations[0]
     elif len(str_annotations) == 2:
-        param_info.name = str_annotations[0]
+        new_name = str_annotations[0]
+        if not new_name.isidentifier():
+            raise ToolDefinitionError(
+                f"Invalid parameter name: '{new_name}' is not a valid identifier. "
+                "Identifiers must start with a letter or underscore, "
+                "and can only contain letters, digits, or underscores."
+            )
+        param_info.name = new_name
         param_info.description = str_annotations[1]
     else:
         raise ToolDefinitionError(
diff --git a/arcade/tests/tool/test_create_tool_definition_errors.py b/arcade/tests/tool/test_create_tool_definition_errors.py
index fa40d712..5e6d10bf 100644
--- a/arcade/tests/tool/test_create_tool_definition_errors.py
+++ b/arcade/tests/tool/test_create_tool_definition_errors.py
@@ -1,3 +1,5 @@
+from typing import Annotated
+
 import pytest
 
 from arcade.core.catalog import ToolCatalog
@@ -41,6 +43,13 @@ def func_with_multiple_context_params(context: ToolContext, context2: ToolContex
     pass
 
 
+@tool(desc="A function with an invalid renamed parameter")
+def func_with_invalid_renamed_param(
+    param1: Annotated[str, "invalid-param-name", "The first parameter"],
+):
+    pass
+
+
 @tool(
     desc="A function with a required secret with a missing key (illegal)",
     requires_secrets=[""],
@@ -95,6 +104,11 @@ def func_with_secret_requirement_invalid_type():
             ToolDefinitionError,
             id=func_with_multiple_context_params.__name__,
         ),
+        pytest.param(
+            func_with_invalid_renamed_param,
+            ToolDefinitionError,
+            id=func_with_invalid_renamed_param.__name__,
+        ),
         pytest.param(
             func_with_missing_secret_key,
             ToolDefinitionError,