Drive a browser
Browserbase
Cloud browser service that runs headless Chrome sessions for agents, controlled over CDP, with proxies, CAPTCHA solving and session replay.
Methods
| Method | Used for | How |
|---|---|---|
| API key | REST API, SDKs, Stagehand | Header x-bb-api-key |
| API key in URL | Hosted MCP server | Query parameter browserbaseApiKey on https://mcp.browserbase.com/mcp |
| Link CLI payment (MPP) | Create a session without an account | Pay the 402 Payment Required challenge with link-cli mpp pay |
Source18API overview
Getting access
- Who creates the account
- A person signs up for an account and copies the API key; the MPP route needs no Browserbase account or API key25
- Where to get a key
- Browserbase dashboard4
- Other requirements
- Project ID for the SDK and the stdio server; an LLM key when not using the default model on the MCP server4
Read from Browserbase, Inc.’s own pages on 2026-11-04. Every number links to the page a value came from. For agents, the same facts as markdown: /tools/drive-a-browser/browserbase.md