BEGINNER GUIDE

No coding required

Copy, paste, and run. That's it.

What is this?

Some websites show a "Checking your browser..." screen before letting you in. That's a WAF (Web Application Firewall) — like Cloudflare, Akamai, or DataDome.

The Karon Web Unblocker API bypasses these checks automatically, so you can fetch any page with a single request.

What can I use it for?

Price comparison across multiple sites
Aggregating news articles in one place
Pulling product data from overseas stores
Feeding web content to AI for summaries
Replacing FlareSolverr in Prowlarr / Sonarr / Radarr

Before you start

An API key — a secret string you get after signing up

Example: ku_live_a1b2c3d4e5f6g7h8

The free tier gives you 1,000 requests ($0)

An internet connection — that's it!

Method 1: Windows

Windows Command Prompt

Press Win + R

Type cmd and hit Enter

Copy the entire command below, paste it, and hit Enter:

curl -X POST https://api.karonlabs.net/v1/agent/browse -H "Authorization: Bearer YOUR_API_KEY" -H "Content-Type: application/json" -d "{\"url\": \"https://news.ycombinator.com\", \"extract\": \"text\"}"

Replace YOUR_API_KEY with your actual API key.

Method 2: Mac

Mac Terminal

Open Spotlight (Cmd + Space), search for Terminal, and paste the following:

curl -X POST https://api.karonlabs.net/v1/agent/browse \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://news.ycombinator.com", "extract": "text"}'

Method 3: Prowlarr / Sonarr Setup

FlareSolverr Replacement (1 minute)

If you run a media server, you can replace FlareSolverr with Karon API instantly.

Open your Prowlarr (or Sonarr / Radarr) settings

Go to Settings > Indexers > FlareSolverr

Change the Host field to:

https://api.karonlabs.net/v1/flaresolverr

No more self-hosting FlareSolverr. No Docker needed. Just change the URL and you're done.

Method 4: Google Sheets

Fetch web pages directly into a spreadsheet

In Google Sheets, go to Extensions > Apps Script

Paste the following code:

function KARON_FETCH(url) {
  var API_KEY = "YOUR_API_KEY";
  var options = {
    method: "post",
    contentType: "application/json",
    headers: { "Authorization": "Bearer " + API_KEY },
    payload: JSON.stringify({ url: url, extract: "text" }),
    muteHttpExceptions: true
  };
  var response = UrlFetchApp.fetch(
    "https://api.karonlabs.net/v1/agent/browse", options
  );
  var data = JSON.parse(response.getContentText());
  return data.success ? data.content : "Error: " + (data.error || "unknown");
}

Save, then type this in any cell:

=KARON_FETCH("https://news.ycombinator.com")

The page content will appear in the cell after a few seconds.

Pricing

Free Beta

1,000 credits/month

Paid Tiers

Coming Q3 2026

Let's Talk →

Checking the same site daily? The free 1,000 credits can last ~1,000 days.

Output Formats

Value	Output	Best For
`text`	Plain text only	Cleanest output. Reading & summaries
`markdown`	Headings, lists, links	AI processing, blog formatting
`html`	Raw HTML source	Design inspection, development

Troubleshooting

Symptom	Cause	Fix
401 error	Invalid API key	Double-check your API key
429 error	Rate limit exceeded	Wait a moment and retry
500 error	WAF bypass challenge failed	Retry — usually works on second attempt
Empty result	JS-rendered page	Add `wait_selector` parameter

FAQ

Is this legal?

Fetching publicly available web pages is generally legal. However, always check the target site's terms of service and be mindful of how you use the collected data.

How fast is it?

First visit to a new site takes 3-10 seconds (WAF bypass setup). Repeat requests to the same domain complete in 50-250ms.

Is my data private?

Responses include automatic redaction of email addresses and certain user-identifying information.

What happens when I run out of credits?

The API returns a "credits exhausted" error. Contact us for higher limits. No surprise charges.

Looking for the full API reference?

Developer Docs →