Browserbase
Type: full-code · Vendor: Browserbase, Inc. · Language: API · License: proprietary · Status: active · Status in practice: mature
Managed browser-infrastructure platform for AI agents — isolated Chromium sessions with stealth fingerprints, residential proxies, CAPTCHA solving, persistent contexts and HLS session-replay recordings.
Description. Browserbase runs real Chromium browsers as a service for agents that need to act on the web. Every session is automatically recorded and replayable as HLS through a Session Inspector or embedded player; contexts persist cookies and auth across sessions; the Verified browser ships real fingerprints that bot-protection partners recognise; residential and datacenter proxies route traffic by geography; and the platform exposes integrations for Anthropic Computer Use and OpenAI Computer-Using Agent so a model can drive a Browserbase session directly. The company also publishes the Stagehand SDK as its agent layer.
Agent loop shape. Session-as-a-service model. The developer (or Stagehand, or a computer-use model) opens a Browserbase session; the agent drives it via CDP or higher-level SDKs; every frame is recorded and an HLS replay is produced. Contexts persist auth and cookies across sessions for resumed work. Browserbase itself does not host the agent loop — it hosts the browser the loop drives.
Primary use cases
- browser sessions as infrastructure for agent runs
- session replay and debugging via Session Inspector
- stealth navigation with residential proxies and CAPTCHA solving
- running OpenAI or Anthropic computer-use models against a managed browser
Key concepts
- Sessions → session-isolation (docs) — Isolated Chromium browser sessions created and observed via API.
- Session replay → replay-time-travel (docs) — Every session is recorded by default; streamed as HLS for inspection and embedding.
- Contexts → agent-resumption (docs) — Reuse cookies, authentication and application data across sessions.
- Verified / Stealth (docs) — Purpose-built Chromium with real browser fingerprints recognised by bot-protection partners.
- Proxies and CAPTCHA solving (docs) — Residential and datacenter proxies plus automatic CAPTCHA resolution.
- Computer Use integrations → computer-use (docs) — First-party adapters wiring Anthropic Computer Use and OpenAI CUA to a Browserbase session.
Patterns this full-code implements —
- ★Browser Agent
Core product is a browser-as-a-service for agents.
- ★★Session Isolation
Browser sessions are the unit of isolation; created, controlled and observed via API.
- ★★Sandbox Isolation
Each session runs in an isolated managed Chromium environment with verified fingerprints.
- ★★Replay / Time-Travel
Every session recorded by default; HLS replays power Session Inspector and custom embeds.
- ★★Agent Resumption
Contexts persist cookies, auth and application data across sessions.
- ★Computer Use
Documented integrations for Anthropic Computer Use and OpenAI Computer-Using Agent against a Browserbase session.
- ★★Multi-Model Routing
Provider-agnostic: model selection is the developer's; Browserbase is infrastructure under any model.
- ★★Tool Use
Browserbase itself doesn't ship a tool catalogue — tools are exposed by the agent SDK (Stagehand) or model (CUA). The docs frame the platform as 'tool use'-enabling infrastructure and document LangCh…
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Alternatives & relatives
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References
Provenance
- Last analyzed:
- Last updated:
- Verification status: verified