diff --git a/.env.example b/.env.example
index 0c6a80e..5adfbcc 100644
--- a/.env.example
+++ b/.env.example
@@ -5,25 +5,25 @@ FIRECRAWL_API_KEY=your_firecrawl_api_key  # Get from https://firecrawl.dev (Web
 # SANDBOX PROVIDER - Choose Option 1 OR 2
 # =================================================================================
 
-# Option 1: E2B Sandbox (recommended for development)
-# Set SANDBOX_PROVIDER=e2b and configure E2B_API_KEY below
-SANDBOX_PROVIDER=e2b
-E2B_API_KEY=your_e2b_api_key  # Get from https://e2b.dev
-
-# Option 2: Vercel Sandbox
+# Option 1: Vercel Sandbox (recommended - default)
 # Set SANDBOX_PROVIDER=vercel and choose authentication method below
-# SANDBOX_PROVIDER=vercel
+SANDBOX_PROVIDER=vercel
 
 # Vercel Authentication - Choose method a OR b
 # Method a: OIDC Token (recommended for development)
 # Run `vercel link` then `vercel env pull` to get VERCEL_OIDC_TOKEN automatically
-# VERCEL_OIDC_TOKEN=auto_generated_by_vercel_env_pull
+VERCEL_OIDC_TOKEN=auto_generated_by_vercel_env_pull
 
 # Method b: Personal Access Token (for production or when OIDC unavailable)
 # VERCEL_TEAM_ID=team_xxxxxxxxx      # Your Vercel team ID 
 # VERCEL_PROJECT_ID=prj_xxxxxxxxx    # Your Vercel project ID
 # VERCEL_TOKEN=vercel_xxxxxxxxxxxx   # Personal access token from Vercel dashboard
 
+# Option 2: E2B Sandbox
+# Set SANDBOX_PROVIDER=e2b and configure E2B_API_KEY below
+# SANDBOX_PROVIDER=e2b
+# E2B_API_KEY=your_e2b_api_key  # Get from https://e2b.dev
+
 # =================================================================================
 # AI PROVIDERS - Need at least one
 # =================================================================================
diff --git a/README.md b/README.md
index d394bcf..6689321 100644
--- a/README.md
+++ b/README.md
@@ -30,15 +30,24 @@ GEMINI_API_KEY=your_gemini_api_key        # https://aistudio.google.com/app/apik
 GROQ_API_KEY=your_groq_api_key            # https://console.groq.com
 
 # =================================================================
-# SANDBOX PROVIDER - Choose ONE: E2B or Vercel
+# SANDBOX PROVIDER - Choose ONE: Vercel (default) or E2B
 # =================================================================
-SANDBOX_PROVIDER=e2b  # or 'vercel'
+SANDBOX_PROVIDER=vercel  # or 'e2b'
 
-# E2B Sandbox (default)
-E2B_API_KEY=your_e2b_api_key            # https://e2b.dev
+# Option 1: Vercel Sandbox (default)
+# Choose one authentication method:
 
-# OR Vercel Sandbox
-VERCEL_OIDC_TOKEN=your_vercel_oidc_token # https://vercel.com
+# Method A: OIDC Token (recommended for development)
+# Run `vercel link` then `vercel env pull` to get VERCEL_OIDC_TOKEN automatically
+VERCEL_OIDC_TOKEN=auto_generated_by_vercel_env_pull
+
+# Method B: Personal Access Token (for production or when OIDC unavailable)
+# VERCEL_TEAM_ID=team_xxxxxxxxx      # Your Vercel team ID 
+# VERCEL_PROJECT_ID=prj_xxxxxxxxx    # Your Vercel project ID
+# VERCEL_TOKEN=vercel_xxxxxxxxxxxx   # Personal access token from Vercel dashboard
+
+# Option 2: E2B Sandbox
+# E2B_API_KEY=your_e2b_api_key      # https://e2b.dev
 ```
 
 3. **Run**