diff --git a/cli/src/hooks/use-freebuff-session.ts b/cli/src/hooks/use-freebuff-session.ts
index b025289ca8..54fa90f51f 100644
--- a/cli/src/hooks/use-freebuff-session.ts
+++ b/cli/src/hooks/use-freebuff-session.ts
@@ -56,7 +56,7 @@ const playAdmissionSound = () => {
 
 const sessionEndpoint = (): string => {
   const base = (
-    env.NEXT_PUBLIC_CODEBUFF_APP_URL || 'https://codebuff.com'
+    env.NEXT_PUBLIC_CODEBUFF_APP_URL || 'https://www.codebuff.com'
   ).replace(/\/$/, '')
   return `${base}/api/v1/freebuff/session`
 }
diff --git a/cli/src/utils/error-handling.ts b/cli/src/utils/error-handling.ts
index 2944941138..449164a130 100644
--- a/cli/src/utils/error-handling.ts
+++ b/cli/src/utils/error-handling.ts
@@ -10,7 +10,7 @@ import type {
 
 import { IS_FREEBUFF } from './constants'
 
-const defaultAppUrl = env.NEXT_PUBLIC_CODEBUFF_APP_URL || 'https://codebuff.com'
+const defaultAppUrl = env.NEXT_PUBLIC_CODEBUFF_APP_URL || 'https://www.codebuff.com'
 
 // Normalize unknown errors to a user-facing string.
 const extractErrorMessage = (error: unknown, fallback: string): string => {
diff --git a/sdk/src/validate-agents.ts b/sdk/src/validate-agents.ts
index db21af7224..52950bf468 100644
--- a/sdk/src/validate-agents.ts
+++ b/sdk/src/validate-agents.ts
@@ -26,7 +26,7 @@ export interface ValidateAgentsOptions {
   /**
    * The base URL of the Codebuff website API.
    * Optional - defaults to NEXT_PUBLIC_CODEBUFF_APP_URL or environment-based URL.
-   * Example: 'https://codebuff.com'
+   * Example: 'https://www.codebuff.com'
    */
   websiteUrl?: string
 }