diff --git a/autogpt/core/ability/base.py b/autogpt/core/ability/base.py
index ac26f0267151..1faaaf3327d4 100644
--- a/autogpt/core/ability/base.py
+++ b/autogpt/core/ability/base.py
@@ -1,6 +1,6 @@
 import abc
 from pprint import pformat
-from typing import ClassVar
+from typing import Any, ClassVar
 
 import inflection
 from pydantic import Field
@@ -50,11 +50,11 @@ def required_arguments(cls) -> list[str]:
         return []
 
     @abc.abstractmethod
-    async def __call__(self, *args, **kwargs) -> AbilityResult:
+    async def __call__(self, *args: Any, **kwargs: Any) -> AbilityResult:
         ...
 
     def __str__(self) -> str:
-        return pformat(self.dump)
+        return pformat(self.dump())
 
     def dump(self) -> dict:
         return {
@@ -88,5 +88,5 @@ def get_ability(self, ability_name: str) -> Ability:
         ...
 
     @abc.abstractmethod
-    def perform(self, ability_name: str, **kwargs) -> AbilityResult:
+    async def perform(self, ability_name: str, **kwargs: Any) -> AbilityResult:
         ...
diff --git a/autogpt/core/resource/model_providers/openai.py b/autogpt/core/resource/model_providers/openai.py
index 3707796a134a..df7bdb83bafb 100644
--- a/autogpt/core/resource/model_providers/openai.py
+++ b/autogpt/core/resource/model_providers/openai.py
@@ -109,7 +109,7 @@ class OpenAIModelProviderBudget(ModelProviderBudget):
 
 class OpenAISettings(ModelProviderSettings):
     configuration: OpenAIConfiguration
-    credentials: ModelProviderCredentials()
+    credentials: ModelProviderCredentials
     budget: OpenAIModelProviderBudget