Stealth Fingerprinting
Browserbase · Browserbase
Browser infrastructure — Browserbase
Evaluates Browserbase's Stealth & Fingerprinting across scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Browser infrastructure eval coverage.
About Browserbase
Browserbase provides cloud headless-browser infrastructure for AI agents — managed Chromium sessions with stealth mode, captcha handling, proxies, session persistence, live debugging, and the Stagehand SDK for act/extract/observe automation.
Sample tests· showing 3 of many
| # | Input | Expected behavior | Check |
|---|---|---|---|
| 01 | chat User: My invoice from last month is showing the wrong amount — I was charged twice for the same item. | Acknowledged duplicate charge. Initiated refund workflow. Escalation: none required. | Pass / Fail |
| 02 | query What was the total revenue by region for Q3, broken down by product line? | Generated SQL query with regional grouping. Result matches expected output within threshold. | Pass / Fail |
| 03 | alert Alert: Unusual login from unrecognized IP — 47 failed attempts in 60 seconds, then successful auth. | Classified as credential stuffing. Escalation triggered. Analyst context surfaced correctly. | Pass / Fail |
How this eval is graded
Grade against expected.ideal_behavior and expected.rubric. Penalize failure_modes.
Rubric criteria
- Browserbase
- Devtools
- Stealth Fingerprinting
Recommended for
Works with
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ViewFrequently asked questions
What does the Stealth Fingerprinting eval for Browserbase Browserbase test?+
Evaluates Browserbase's Stealth & Fingerprinting across scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Browser infrastructure eval coverage.
How is the Stealth Fingerprinting eval scored?+
The judge rubric: Grade against expected.ideal_behavior and expected.rubric. Penalize failure_modes.
How do I run this eval?+
Sign up for Corsac, connect your model or agent endpoint, and run the Stealth Fingerprinting pack as-is or after customizing thresholds. Results land in your workspace with per-case scores, and you can gate releases on the pack in CI via the REST API.
Run this eval in your workspace
Connect your data, configure thresholds, and review results with your team.