Stagehand
BetaAI primitives on top of Playwright. TypeScript-first.
AI web automation SDK built on Playwright by Browserbase. Adds act, extract, and observe primitives to deterministic Playwright workflows. v3 launched February 2026 with a CDP-direct architecture and 44 percent speed improvement.
- Category
- Browser & computer-use agents
- Runtime
- Node.js / TypeScript
- Pattern
- SDK / Library
- Adapter package
- @intramedial/actor-stagehand
Status
Stagehand is Beta.
The integration path is built and tested. Customers can attach now; expect minor breaking changes until the 1.0 contract freeze.
Ships from the repo as `@intramedial/actor-stagehand` — not yet on a package registry.
How to attach
SDK / Library.
Install the adapter
Add @intramedial/actor-stagehand to your project.
Issue a workspace API key
Generate a key in the dashboard under Settings → API Keys, scoped to the workspace and environment this agent's data should land in.
Record each run
Construct the adapter once with your token and workspace id where you initialise your Stagehand agent, then call recordRun(run) when a run finishes. The adapter maps the run to signed receipts and, by default, captures a failed attestation instead of crashing your agent.
Verify
Trigger one agent run. The Witness page shows the record once the agent has emitted it.
What gets recorded
2 event types, captured today.
- agent.invocation
- Every top-level agent run — the input, the resolved output, timing and token usage.
- tool.call
- Each tool or function the agent invokes, with its arguments and returned result.
Same category
Others in Browser & computer-use agents.
- browser-useBeta
Open-source Python browser agent. 50K+ GitHub stars.
- SkyvernBeta
Vision-first browser agent. 21K+ stars, 10M+ executed workflows.
Vision-driven screen control. Available via API, Bedrock, Vertex.
Anthropic's official Chrome extension. Generally available.
- UI-TARSBeta
Multimodal desktop + browser automation with vision-based selectors.
- AgentQLBeta
Query language for AI agents extracting structured data from web pages.
Start recording Stagehand agents.
Every Stagehand run lands in the same canonical Witness record as every other framework in the catalogue: signed, replayable, and exportable as evidence.
A Trustvice ProductAgents act when the plane says yes, and the record says why.
Put admission in front of your MCP servers, repositories, SaaS tools and cloud accounts. Every agent gets a lease or a reason – and you keep the lever to stop any of them.
