Documentation Index
Fetch the complete documentation index at: https://mintlify.com/vercel-labs/agent-browser/llms.txt
Use this file to discover all available pages before exploring further.
Overview
State management commands allow you to control cookies, localStorage, sessionStorage, and save/load browser state.
Cookies
cookies
Get all cookies for the current page.
Examples:
Output:
[
{
"name": "session_id",
"value": "abc123",
"domain": ".example.com",
"path": "/",
"expires": 1709395200,
"httpOnly": true,
"secure": true,
"sameSite": "Lax"
}
]
cookies set
Set a cookie.
| Parameter | Description |
|---|
name | Cookie name |
value | Cookie value |
Options:
| Option | Description |
|---|
—url | URL to set cookie for |
—domain | Cookie domain |
—path | Cookie path (default: /) |
—httpOnly | HttpOnly flag |
—secure | Secure flag |
—sameSite | SameSite attribute: Strict, Lax, None |
—expires | Expiration timestamp (Unix epoch) |
Examples:
# Set simple cookie
agent-browser cookies set session_id abc123
# Set cookie with domain
agent-browser cookies set user_id 456 --domain ".example.com"
# Set secure cookie
agent-browser cookies set token xyz --secure --httpOnly
# Set cookie with SameSite
agent-browser cookies set auth token123 --sameSite Strict
# Set cookie with expiration (Unix timestamp)
agent-browser cookies set temp value --expires 1709395200
# Set cookie for specific URL
agent-browser cookies set api_key key123 --url "https://api.example.com"
cookies clear
Clear all cookies.
Examples:
agent-browser cookies clear
Local Storage
storage local
Get all localStorage items.
Examples:
agent-browser storage local
Output:
{
"theme": "dark",
"language": "en",
"user_preferences": "{\"notifications\":true}"
}
storage local (key)
Get specific localStorage item.
| Parameter | Description |
|---|
key | Storage key |
Examples:
agent-browser storage local theme
agent-browser storage local user_preferences
Output:
storage local set
Set localStorage item.
| Parameter | Description |
|---|
key | Storage key |
value | Storage value |
Examples:
agent-browser storage local set theme dark
agent-browser storage local set language en
agent-browser storage local set user_id 12345
storage local clear
Clear all localStorage.
Examples:
agent-browser storage local clear
Session Storage
Session storage commands work identically to local storage, but use storage session instead:
Examples:
# Get all sessionStorage
agent-browser storage session
# Get specific key
agent-browser storage session tab_state
# Set value
agent-browser storage session form_data "{\"name\":\"John\"}"
# Clear all
agent-browser storage session clear
Browser State
state save
Save current browser state (cookies, localStorage, sessionStorage) to a file.
| Parameter | Description |
|---|
path | File path to save state |
Examples:
# Save state after login
agent-browser state save ./auth-state.json
# Save state with descriptive name
agent-browser state save ./logged-in-user.json
Output:
State saved to ./auth-state.json
state load
Load browser state from a file.
| Parameter | Description |
|---|
path | File path to load state from |
Examples:
# Load saved state
agent-browser state load ./auth-state.json
# Navigate to page with loaded state
agent-browser open example.com/dashboard
Output:
State loaded from ./auth-state.json
state list
List all saved state files.
Examples:
Output:
Saved state files:
auth-state.json (2.3 KB, 2026-03-01)
logged-in-user.json (1.8 KB, 2026-02-28)
test-session.json (3.1 KB, 2026-02-27)
state show
Show summary of a state file.
| Parameter | Description |
|---|
filename | State file name |
Examples:
agent-browser state show auth-state.json
Output:
State file: auth-state.json
Size: 2.3 KB
Created: 2026-03-01 14:30:00
Cookies: 5
LocalStorage: 3 items
SessionStorage: 1 item
state clear
Clear saved state files.
| Parameter | Description |
|---|
name | Optional: Session name to clear |
Options:
| Option | Description |
|---|
—all, -a | Clear all saved states |
Examples:
# Clear states for current session
agent-browser state clear
# Clear states for specific session
agent-browser state clear mysession
# Clear all saved states
agent-browser state clear --all
state clean
Delete old state files.
| Option | Description |
|---|
—older-than | Delete states older than N days |
Examples:
# Delete states older than 30 days
agent-browser state clean --older-than 30
# Delete states older than 7 days
agent-browser state clean --older-than 7
state rename
Rename a state file.
| Parameter | Description |
|---|
old-name | Current state file name |
new-name | New state file name |
Examples:
agent-browser state rename old-state.json new-state.json
agent-browser state rename test production
Workflow Examples
Skip Login Flow
# Login once and save state
agent-browser open example.com/login
agent-browser fill @e1 "user@example.com"
agent-browser fill @e2 "password"
agent-browser click @e3
agent-browser wait --url "**/dashboard"
agent-browser state save ./logged-in.json
# Reuse saved state (skip login)
agent-browser state load ./logged-in.json
agent-browser open example.com/dashboard
# Already logged in!
Session Management
# Save different user sessions
agent-browser state save ./user1-session.json
agent-browser state save ./user2-session.json
# Switch between users
agent-browser state load ./user1-session.json
agent-browser open example.com/dashboard
# Switch to user2
agent-browser state load ./user2-session.json
agent-browser open example.com/dashboard
Testing with Different States
# Test as logged-in user
agent-browser state load ./logged-in.json
agent-browser open example.com/protected
# Test as guest
agent-browser cookies clear
agent-browser storage local clear
agent-browser open example.com/protected
# Should redirect to login
Manage User Preferences
# Set theme preference
agent-browser storage local set theme dark
# Set language
agent-browser storage local set language en
# Get current theme
agent-browser storage local theme
# Clear preferences
agent-browser storage local clear
Cookie-Based Auth
# Set auth cookie
agent-browser cookies set auth_token xyz123 --secure --httpOnly
# Navigate to protected page
agent-browser open example.com/dashboard
# Verify cookie exists
agent-browser cookies
# Clear session
agent-browser cookies clear
Persistent Sessions
Use --session-name to automatically save and restore state:
# Auto-save/load state
export AGENT_BROWSER_SESSION_NAME=myapp
agent-browser open example.com
# State persists across browser restarts
agent-browser close
agent-browser open example.com
# Cookies and storage restored automatically
State Encryption
Encrypt saved state files with AES-256-GCM:
# Generate encryption key
openssl rand -hex 32
# Set encryption key
export AGENT_BROWSER_ENCRYPTION_KEY=<64-char-hex-key>
# State files are now encrypted
agent-browser --session-name secure open example.com
Environment Variables
| Variable | Description |
|---|
AGENT_BROWSER_SESSION_NAME | Auto-save/load state with this name |
AGENT_BROWSER_ENCRYPTION_KEY | 64-char hex key for AES-256-GCM encryption |
AGENT_BROWSER_STATE_EXPIRE_DAYS | Auto-delete states older than N days (default: 30) |