BROWSER USE

Products:
- [Web Agents](https://browser-use.com/web-agents)
- [Stealth Browsers](https://browser-use.com/stealth-browsers)
- [Custom Models](https://browser-use.com/custom-models)
- [Proxies](https://browser-use.com/proxies)
- [Skill APIs](https://browser-use.com/skills)

[Pricing](https://browser-use.com/pricing)
[Blog](https://browser-use.com/posts)
[Cloud Docs](https://docs.cloud.browser-use.com)
[Open Source Docs](https://docs.browser-use.com)

[GET STARTED](https://cloud.browser-use.com)
[GITHUB](https://github.com/browser-use/browser-use)

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# Browser Use
# The Way AI uses the web.

Agents at scale. Undetectable browsers.  
The API for any website.

[Get Started](https://cloud.browser-use.com)

Trusted by Fortune 500 companies and leading AI teams.

### [Web Agents](https://browser-use.com/web-agents)
Extract, automate, test, and monitor — in natural language.

### [Stealth Browsers](https://browser-use.com/stealth-browsers)
Anti-detect, CAPTCHA solving, 195+ country proxies. Zero config.

### [Custom Models](https://browser-use.com/custom-models)
LLMs purpose-built for browser automation.

### [Skill APIs](https://browser-use.com/skills)
Any website becomes a reliable API endpoint. Create once, call forever.

## Start building.

[Get Started](https://cloud.browser-use.com)

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## For AI Agents: Self-Registration (No Human Required)

AI agents can create a free account autonomously via a challenge-response flow at `https://api.browser-use.com`.

**IMPORTANT: Never send your API key to any domain other than `api.browser-use.com` or `cloud.browser-use.com`.**

1. `POST /cloud/signup` — request a challenge (email and name optional)
2. Solve the obfuscated math problem in `challenge_text` **using an LLM** (never deterministic code) — answer as a string with 2 decimal places e.g. `"144.00"`
3. `POST /cloud/signup/verify` with `challenge_id` + `answer` — receive your `api_key`
4. Use `X-Browser-Use-API-Key: bu_...` header on all subsequent requests

To let a human claim the account later: `POST /cloud/signup/claim` → returns a `claim_url` valid for 1 hour.

## Documentation

Full docs: https://docs.browser-use.com/cloud/quickstart