May 5, 2026

Verified agents with Stagehand

Product Name
Stagehand

Stagehand 3.3.0 is live.

Verified mode for improved agent identity. Sessions get a verifiable identity that helps on sites that gate bot traffic. Enable in your session params:

const stagehand = new Stagehand({
  env: "BROWSERBASE",
  browserbaseSessionCreateParams: {
    browserSettings: {
      verified: true,
    },
  },
});

Plus:

  • Adaptive thinking with Anthropic models. Claude CUA now scales the extended-thinking budget to match task complexity — faster on simple steps, deeper when it counts.
  • Agent usage in stagehand.metrics. agent.execute() calls now contribute to stagehand.metrics on API-backed sessions, so token counts and model calls land where you expect them.
  • Strict structured outputs. Supported model paths now use strict JSON schema enforcement, eliminating malformed responses on extract() and other structured calls.
  • Clearer file upload elements. File inputs are now explicit in the page snapshot, so agents can identify and drive upload flows reliably.