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Label, Train & Deploy Browser Agents.

Track browser agent performance over time, surface failure modes quickly, and iterate infinitely against sandboxed web apps to build confidence without spamming live websites.

Request Early Access
QA Browser Test Agent
Workflow version: v4
Live results
Claude Sonnet 4.5
Variant A
GPT-5
Variant B
Runs
100
100
Success Rate
94%+8%
86%
Avg Actions
11.2-3.6
14.8
Cost / Run
$0.031-58%
$0.074
Winner: Claude Sonnet 4.5
Higher success rate · fewer actions · 58% cheaper per run
Deploy →
The Problem

Browser agents fail. You have no idea why.

Building browser agents without visibility, training data, or benchmarks means shipping blind and improving by luck.

Failures are opaque

Are your browser agents getting stuck on captchas or silently failing on page loads? Without action-level tracing across browser sessions you're debugging blind, guessing at prompts, and hoping the next run works.

No training data

No way to capture what your agent actually did, label which actions were correct, or build datasets from real sessions. You're improving by instinct, not evidence.

Improvement is unmeasurable

You change the prompt. Is the agent better? Worse? There's no baseline. No version history. No way to A/B test GPT-4 against Claude on the same browser workflow. "V2 feels worse" is not a metric.

Built by the team behind Debugg.ai — 800+ users, 10,000+ agent tests/week

The missing layer between automation and production

Works with Playwright, Puppeteer, Selenium, browser-use, or any browser automation framework

Your Framework
Playwright, Puppeteer, etc.
Surfs
Label, train, evaluate
Production
Ship with confidence

Framework-agnostic. Works with your existing automation stack.

Visual workflow canvas showing a 4-node E2E test pipeline: Trigger, Setup Browser Session, Execute Test via Surfer, Teardown

How it works

01

Design your browser agent

Build your agent visually in the Surfs workflow builder, or bring your own — browser-use, Playwright, Puppeteer, anything. No lock-in, no rewriting.

02

Run against sandboxed apps

Clone, build, or point Surfs at any web app and run your agent against it in a fully isolated environment. Iterate freely without touching live websites.

03

Fine-tune on real data

Every sandboxed session generates labeled training data from actual agent runs. Use it to fine-tune existing models or train agents that get measurably better.

04

Version and deploy

Every agent change is versioned. Benchmark new versions against old ones before shipping. Deploy with confidence when the data backs it up.

05

Track and monitor

Continuously monitor live agent sessions for failure modes, performance degradation, and regressions. Know when something breaks before your users do.

Action-level session replay

Automatically surface failure patterns

Action-level tracing across every browser session so you know exactly where agents get stuck, what triggers navigation failures, and how often they recur — without manually scrubbing through session recordings.

Session replay showing 8 action steps with pass/fail status per step and live browser recording
Sandboxed environments

Safe, scalable training data

Deploy any web app into a sandboxed environment and run your agents against it as many times as you need — no risk of spamming live websites, no side effects, no limits on iteration.

Connect your app
GitHub repo or any URL
2s
Clone & Build
We clone your repo and run your build command
45s
Sandbox Ready
Isolated environment with secure browser access
3s
Run Agents
Your agents interact with a real, live app — safely
2m 15s
Training Data Captured
Labeled sessions ready · Auto-refreshing

Everything isolated for you

Connect your GitHub repo and we handle the rest — cloning, building, sandboxing, and running your agents. All automated, all isolated, all generating real training signal.

No live site risk
Agents run in complete isolation. No real users, no real data, no side effects.
Unlimited iteration
Run the same workflow 100, 1,000, 10,000 times. No throttling, no worries.
Real training data
Every run generates labeled action sequences from actual agent behavior.
No live site riskWorks with any stackUnlimited runs
Deterministic, sandboxed testing

Fine-tune and train on real data

Every sandboxed session generates labeled training data from actual agent runs. Use it to fine-tune existing models or custom train agents that get measurably better over time.

Workflow execution list showing 49 of 50 runs completed, 1 failed, with duration and run ID per execution
Version control for agent behavior

Benchmark and track improvements

Every agent deployment is versioned. Every prompt change is measured against a baseline. Run GPT-4 and Claude head-to-head on the same browser workflow and know with certainty which one wins.

Workflows dashboard showing versioned workflow templates with execution counts and last run status
Safe deployment

Version and deploy with confidence

Every agent change is versioned. Benchmark new versions against old ones before shipping. Deploy when the data backs it up — not when it feels right.

Execution detail showing 4-node pipeline: E2E Run Requested, Setup Browser Session, Execute Test via Surfer, Teardown — all completed

Built by the team behind

debugg.ai
800+
Users
10,000+
Agent tests/week
728
Workflow runs

Start building browser agents
with confidence

Label, train, and deploy production-ready browser agents.

Request Early Access
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