diff --git a/twitter-langchain/src/actions/account_details.ts b/twitter-langchain/src/actions/account_details.ts
index 880da98..54b5aa9 100644
--- a/twitter-langchain/src/actions/account_details.ts
+++ b/twitter-langchain/src/actions/account_details.ts
@@ -24,7 +24,10 @@ A failure response will return a message with a Twitter API request error:
 /**
  * Input argument schema for the account details action.
  */
-export const AccountDetailsInput = z.object({}).strip().describe("Input schema for retrieving account details");
+export const AccountDetailsInput = z
+  .object({})
+  .strip()
+  .describe("Input schema for retrieving account details");
 
 /**
  * Get the authenticated Twitter (X) user account details.
@@ -47,7 +50,7 @@ export async function accountDetails(
 }
 
 /**
- * AccountDetailsAction
+ * Account Details Action
  */
 export class AccountDetailsAction implements TwitterAction<typeof AccountDetailsInput> {
   public name = "account_details";
diff --git a/twitter-langchain/src/tests/user_mentions_test.ts b/twitter-langchain/src/tests/user_mentions_test.ts
index de33433..1c37c95 100644
--- a/twitter-langchain/src/tests/user_mentions_test.ts
+++ b/twitter-langchain/src/tests/user_mentions_test.ts
@@ -1,7 +1,7 @@
 import { userMentions, UserMentionsInput } from "../actions/user_mentions";
 import { TwitterApi, TwitterApiv2 } from "twitter-api-v2";
 
-const MOCK_USER_ID = "1857479287504584856"
+const MOCK_USER_ID = "1857479287504584856";
 
 describe("User Mentions Input", () => {
   it("should successfully parse valid input", () => {
@@ -55,10 +55,10 @@ describe("User Mentions Action", () => {
   });
 
   it("should successfully retrieve user mentions", async () => {
-    const args = { userId: "1857479287504584856" };
+    const args = { userId: MOCK_USER_ID };
     const response = await userMentions(mockApi, args);
 
-    expect(mockClient.userMentionTimeline).toHaveBeenCalledWith(MOCK_USER_ID);
+    expect(mockApi.v2.userMentionTimeline).toHaveBeenCalledWith(MOCK_USER_ID);
     expect(response).toContain("Successfully retrieved user mentions:");
     expect(response).toContain(JSON.stringify(mockApiResponse));
   });