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The Ultimate Web Error
& Network Analyzer API

Experience unparalleled debugging with our Headless Browser API.
We extract console errors, unhandled exceptions, and network failures in real-time.
Perfectly optimized for automated QA, site monitoring, and developer tools.

Get 2,500 free queries No credit card required
Uncaught TypeError: Cannot read properties of null
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Join the 1,000,000+ companies and developers using UWS Error Code

Hugging Face Stanford Deloitte McKinsey Feedly Metaview DeepMind Agoda

Simple, Affordable Pricing

Experience the industry's lowest prices with our Web Debugging API's top-up
model. No monthly subscriptions; simply pay for the credits you need. The
more you order, the lower the cost per query. Enjoy prices up to 10 times
cheaper than other leading providers.

Starter

$50*
25k credits ($2.00/1k)
  • Submit 25,000 queries
  • 50 queries per second
  • Real-time results
  • Customize query location
  • Credits valid for 6 months
  • Deep Fetch for LLMs
Get Started

Standard

$375*
250k credits ($1.50/1k)
  • Submit 250,000 queries
  • 100 queries per second
  • Real-time results
  • Customize query location
  • Credits valid for 6 months
  • Deep Fetch for LLMs
Get Started

Scale

$1250*
1.25M credits ($1.00/1k)
  • Submit 1,250,000 queries
  • 200 queries per second
  • Real-time results
  • Customize query location
  • Credits valid for 6 months
  • Deep Fetch for LLMs
Get Started

Ultimate

$3750*
6.25M credits ($0.60/1k)
  • Submit 6,250,000 queries
  • 300 queries per second
  • Real-time results
  • Customize query location
  • Credits valid for 6 months
  • Deep Fetch for LLMs
Get Started

* Excluding sales tax/VAT/GST

FAQ

How quickly will I receive an analysis result?
Our headless browser API is heavily optimized for speed. In most cases, you will receive a full error analysis response within 2-5 seconds, depending on the target site's load time.
How many URLs can I analyze per second (QPS)?
Your rate limit depends on your current plan. It starts at a generous 50 queries per second for the Starter plan and can scale up to 300 queries per second for the Ultimate plan.
Are the error logs fetched in real-time?
Absolutely. Every query is executed in real-time using a fresh headless browser instance, extracting the most up-to-date console errors and network failures at the exact moment you make the request.
Can I extract unhandled exceptions and network errors?
Yes! By passing a target URL, our API will autonomously navigate to the site and extract all uncaught exceptions, console errors/warnings, and failed network requests. This makes the data instantly ready for automated QA and developer tools.
When are my credits actually deducted?
We believe in fair billing. Credits are only deducted from your balance upon a successful API response. Failed requests or internal errors will not cost you anything.
Is there a free trial available?
Yes! As soon as you sign up, you will automatically receive 2,500 free credits to thoroughly test our API and evaluate its capabilities. No credit card is required to start.
Do my purchased credits expire?
Yes, purchased credits remain valid for 6 months from the date of purchase. We provide this generous window so you can use them at your own pace without pressure.
What happens if I exceed my rate limit?
If you send more requests than your plan allows, our system will temporarily return a 429 Too Many Requests error. Once the current minute passes, you can immediately resume making requests.

Ready to debug?

Unleash the potential of Web Debugging with our high-performance Analyzer
API. Empower your automated QA, site monitoring, and developer tools with
lightning-fast access to real-time error logs.

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