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Resurf

realistic, reproducible test framework for AI browser agents

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Systematic testing of browser agents today is not easy: testing on real websites is flaky, rate-limited and potentially expensive (e.g. using proxies or bypassing Captcha), while static-HTML benchmarks lack state and dynamic behavior.Resurf gives your browser agent a realistic, stateful, instrumented framework — built on synthetic websites with failure-mode injection:- Realistic, dynamic, interactive environment - Deterministic & reproducible - Failure-mode injection (latency, payment errors, 5xx) - Auditable success eval (DB state, not LLM judge) - No dependency on live websites - Browser Use and Stagehand supported out of the box

HN · launched May 7, 2026 · 5 upvotes (top 89%) · 0 views

Niche: ai agent evaluation platforms · 182 launches, 8 in the last 7 days ▼ -50% · Explore this niche →

Category and tags

  • Horizontal
  • Observability & eval
  • Developer
  • AI-native
  • Commercial product

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Could you build this?

Partial The browser orchestration wrappers and test runner are straightforward, but building a reproducible, stateful, deterministic simulation environment of complex dynamic websites is fundamentally non-trivial.

What it would actually take: The architecture involves Playwright/Puppeteer running against containerized mock web applications with seeded databases and record-replay HTTP proxies (e.g., Polly.js or custom Har-based interceptors). The hardest part is deterministic state management across asynchronous client-side events, animations, and non-deterministic third-party scripts. This requires experienced systems testing engineers with expertise in browser automation and sandboxing.

Discussion

No comments on this launch.

Competitors

Other products that read as similar to this one : 370 launches clear the similarity bar, closest 8 shown.

Attention rank: #338 of 371 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 185 days after the earliest competitor.

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