# Browser Use Cloud > Browser Use Cloud has two products on the same managed browser > infrastructure. **Agent** accepts a natural-language goal and completes the > web task. **Browser** gives Playwright, Puppeteer, and other remote CDP > clients direct control of a cloud browser. Both include stealth, residential > proxies, profiles, and live observability. Auth uses > `X-Browser-Use-API-Key` (keys start with `bu_`). - Dashboard: https://cloud.browser-use.com - Create API key: https://cloud.browser-use.com/settings?tab=api-keys&new=1 - Docs: https://docs.browser-use.com - Product map: https://browser-use.com/llms.txt — Choose between Hosted Agents, Browser Infrastructure, and the Open Source Library. - Pricing: https://browser-use.com/pricing.md — Current plans, credits, browser and proxy rates, model token prices, and billing behavior. - OpenAPI spec (v4): https://docs.browser-use.com/cloud/openapi/v4.json - Open-source repo: https://github.com/browser-use/browser-use — The open-source Python library. Note: the open-source API is different from the Cloud SDK. If you want the easiest path to production with managed infrastructure, use the Cloud SDK below. **Choose API V4 for hard, high-accuracy tasks.** It is the recommended Agent API for new integrations and works especially well for long, complex workflows. **Choose API V2 for simple tasks when extremely low cost or predictable speed matters more than accuracy.** V2 accuracy is substantially lower than V4. Browser Use ranks #1 on the [Odysseys benchmark](https://odysseysbench.com/leaderboard). Use the benchmark when accuracy is the deciding factor. **Stopping standalone browsers:** Do not use `client.close()`, `browser.close()`, or a dropped CDP connection as the API V4 stop operation. Keep the browser session ID returned by `POST /api/v4/browsers`, then call `PATCH /api/v4/browsers/{id}` with `{"action":"stop"}`. This stops billing and refunds unused browser time. **Create and reuse a login profile:** Create one profile per end user, then pass its ID as top-level `profileId` when creating browsers, or as `browserSettings.profileId` on agent runs: ```bash profile=$(curl -sS https://api.browser-use.com/api/v4/profiles \ -H "X-Browser-Use-API-Key: $BROWSER_USE_API_KEY" \ -H "Content-Type: application/json" \ -d '{"name":"My user"}') export BROWSER_USE_PROFILE_ID=$(echo "$profile" | jq -r .id) curl -sS https://api.browser-use.com/api/v4/browsers \ -H "X-Browser-Use-API-Key: $BROWSER_USE_API_KEY" \ -H "Content-Type: application/json" \ -d "{\"profileId\":\"$BROWSER_USE_PROFILE_ID\",\"proxyCountryCode\":\"us\"}" ``` Log in once in that browser, stop it, then use the same profile ID to start the next browser already logged in. Full guide: https://docs.browser-use.com/cloud/guides/authentication **Current TypeScript SDK typing:** Pass `model` explicitly. Prefer `gpt-5.6-luna`, the recommended V4 model; if the generated union does not yet include it, use `grok-4.5` or call `POST /api/v4/runs` directly. Whenever `browserSettings` is present, also pass `proxyCountryCode`: use `"us"` to keep the default or `null` to disable the managed proxy. New model strings can reach REST before the generated TypeScript union. The generated SDK request types do not yet expose V4 `modelParams`; use REST for that field until the follow-up SDK release. Before writing code, check if `browser-use-sdk` is already installed. If so, upgrade to the latest version. If not, install it: - Python: `pip install --upgrade browser-use-sdk` - TypeScript: `npm install browser-use-sdk@latest` Set API key (starts with `bu_`). If the user doesn't have one yet, they can create one in one click at https://cloud.browser-use.com/settings?tab=api-keys&new=1: ``` export BROWSER_USE_API_KEY=bu_your_key_here ``` ## Get Started - [Quick start](https://docs.browser-use.com/cloud/quickstart): Run a hosted agent or launch a cloud browser. - [Choosing an Agent](https://docs.browser-use.com/cloud/choosing-an-agent): Compare Browser Use Cloud agents on accuracy, speed and price, and pick the right one for your task. - [Prompt for Vibecoders](https://docs.browser-use.com/cloud/vibecoding): Complete Cloud SDK reference for AI coding agents. ## Agent - [Run a task](https://docs.browser-use.com/cloud/agent/quickstart): Give a high-accuracy browser agent a goal and get the result. - [Models](https://docs.browser-use.com/cloud/agent/models): Choose a V4 model and understand its token pricing. - [Thinking levels](https://docs.browser-use.com/cloud/agent/thinking-levels): Configure model reasoning depth across API V2, V3, and V4. - [Structured output](https://docs.browser-use.com/cloud/agent/structured-output): Ask for JSON and validate the V4 result in your application. - [Sessions](https://docs.browser-use.com/cloud/agent/sessions): Continue one conversation across multiple V4 runs. - [Workspaces & files](https://docs.browser-use.com/cloud/agent/workspaces): Persist files across V4 runs and conversations. - [Rerunnable scripts](https://docs.browser-use.com/cloud/agent/scripts): Save a Browser Use task as a rerunnable script for repeated live data extraction and self-healing runs. - [Human in the loop](https://docs.browser-use.com/cloud/agent/human-in-the-loop): Open the live browser, take over, then continue the same session. - [Observability](https://docs.browser-use.com/cloud/agent/observability): Poll ordered V4 events to monitor a run or build a custom UI. ## Browser - [Browser Infrastructure quickstart](https://docs.browser-use.com/cloud/browser/quickstart): Launch a cloud browser and connect to it from your code. - [Stealth](https://docs.browser-use.com/cloud/browser/stealth): Best stealth on the planet. We fork Chromium to give agents access to all websites. - [CAPTCHA handling](https://docs.browser-use.com/cloud/browser/captcha-handling): Cloud browsers solve supported CAPTCHA challenges automatically. - [Proxies](https://docs.browser-use.com/cloud/browser/proxies): Route API V4 agent runs through residential or custom proxies. - [Live preview & recording](https://docs.browser-use.com/cloud/browser/live-preview): Watch an API V4 run in real time or record its browser. - [Playwright, Puppeteer, Selenium](https://docs.browser-use.com/cloud/browser/playwright-puppeteer-selenium): Control a Browser Use cloud browser directly over CDP. ## Authentication - [Profiles](https://docs.browser-use.com/cloud/guides/authentication): Reuse cookies and browser state in API V4 runs. - [Sync local and cloud cookies](https://docs.browser-use.com/cloud/guides/profile-sync): Sync a local login, then use it in an API V4 run. - [2FA](https://docs.browser-use.com/cloud/guides/2fa): Handle two-factor authentication in API V4 runs. - [1Password & 2FA](https://docs.browser-use.com/cloud/guides/1password): Auto-fill passwords and TOTP codes from 1Password in API tasks: v4 runs with secret bindings, v2 and v3 tasks with a vault id. - [Secrets](https://docs.browser-use.com/cloud/guides/secrets): Pass domain-scoped credentials to the agent securely. ## More - [FAQ](https://docs.browser-use.com/cloud/faq): Common questions and solutions. ## Integrations - [OpenClaw](https://docs.browser-use.com/cloud/tutorials/integrations/openclaw): Give OpenClaw agents browser automation with Browser Use — via CDP or the CLI skill. - [Hermes Agent](https://docs.browser-use.com/cloud/tutorials/integrations/hermes-agent): Give Hermes Agent cloud browser automation with Browser Use. - [MCP Server](https://docs.browser-use.com/cloud/guides/mcp-server): Run browser automation tasks from your AI coding assistant. Connect to Claude, Cursor, Windsurf, or any MCP client. - [Webhooks](https://docs.browser-use.com/cloud/guides/webhooks): Receive real-time notifications when tasks complete. Configure webhook endpoints for async task monitoring. - [x402 (pay-per-request)](https://docs.browser-use.com/cloud/guides/x402): Pay for Browser Use Cloud with crypto (USDC on Base). ~30 seconds from wallet to first request. - [x402 agent wallets](https://docs.browser-use.com/cloud/guides/x402-agent-wallets): Pay for Browser Use Cloud from an agent-native wallet: AgentCash (local wallet, MCP) or Coinbase's Agentic Wallet (hosted wallet, CLI). ## Anthropic - [Claude Code](https://docs.browser-use.com/cloud/tutorials/integrations/claude-code): Give Claude Code cloud browser automation with Browser Use. - [Claude Managed Agents](https://docs.browser-use.com/cloud/tutorials/integrations/claude-managed-agents): Give Anthropic's Claude Managed Agents a stealth cloud browser via the Browser Use CLI. ## Tutorials - [Get a Browser Use API Key](https://docs.browser-use.com/cloud/agent-signup): Agent signup is off. Create an API key in Cloud, or use x402 without a human. ## Legacy (v2) - [Agent (v2)](https://docs.browser-use.com/cloud/legacy/agent): V2 agent models and file handling. - [Public share links (v2)](https://docs.browser-use.com/cloud/legacy/public-share): Generate shareable URLs for agent sessions using the v2 API. - [Skills](https://docs.browser-use.com/cloud/legacy/skills): Retired. Existing skills still run; new skills are no longer created. ## API v4 - [API Reference](https://docs.browser-use.com/cloud/api-v4-overview): Authenticate and start using the Browser Use API v4 — the current REST API for long-horizon agents. ## API v2 - [API key](https://docs.browser-use.com/cloud/api-v2-overview): Set your API key to access the Browser Use v2 REST API.