[ 01 ]What it looks like
A full-page interstitial with a slide-to-fit puzzle in an iframe from captcha-delivery.com.
Captcha type · DataDome
DataDome captcha solver API
DataDome device-fingerprint interstitials and slider challenges solved, returning the datadome cookie matched to your proxy and user agent.
Also searched asDataDome cookieDataDome slidercaptcha-delivery.comgeo.captcha-delivery.comDataDome 403
- Price
- $2.18
- per 1,000
- Token acceptance
- 97.2%
- Median solve
- 8.9s
- p95 solve
- 21.0s
[ 02 ]Why it is hard
What you need is a datadome cookie, not a form token, and that cookie is bound to the IP and user agent that earned it. Replay it from a different exit and it is dead on the first request. The iframe src carries a t parameter: t=fe is a solvable challenge, t=bv means the IP is already banned and no amount of solving changes the outcome, which makes proxy quality the dominant cost driver rather than recognition accuracy.
[ 03 ]How we solve it
The task carries your proxy and userAgent, and the challenge is completed through that exact exit, so the datadome cookie we return is already valid for your next request. Slider models are retrained on live traffic because DataDome rotates its puzzle assets. A t=bv URL is detected and returned as a proxy-banned failure instead of being solved and billed.
[ 02 ]Solve it in five lines
Solve it in five lines
Post the task, get the token. Our SDKs collapse creation, polling and retries into one call.
datadome.sh
curl -s https://api.nexcaptcha.net/createTask \
-H "Content-Type: application/json" \
-d '{
"clientKey": "YOUR_API_KEY",
"task": {
"type": "DataDomeSliderTask",
"websiteURL": "...",
"captchaUrl": "...",
"userAgent": "...",
"proxy": "..."
}
}'Required parameters
- API task type
- DataDomeSliderTask
- websiteURL
- required
- captchaUrl
- required
- userAgent
- required
- proxy
- required
- Difficulty
- Very hard
[ 03 ]Where this one shows up
Where this one shows up
Web Scraping & Data Collection
Keep a crawl moving when challenges start firing at volume.
E-commerce Price & Inventory Monitoring
Price feeds that finish their run before the data goes stale.
Travel & Fare Aggregation
Fare data at volume, against the hardest anti-bot stacks.
Market Research & Data Aggregation
One call shape across sources that each protect differently.
Ad Verification & Brand Protection
Check live placements from the consumer’s geo, continuously.
[ 05 ]Questions about this one
Questions about this one
$2.18 per 1,000 accepted solves, against a $1.45 benchmark at 2Captcha on 2026-09-22. Failed tasks are not billed. Median return is 8.9s and p95 is 21.0s, which is slower than a widget type because the challenge runs through your proxy.
Yes, and it is not optional. The datadome cookie is issued against the IP that solved the challenge, so we have to solve from your exit or the cookie is useless to you. Send the same proxy and userAgent you will use for the follow-up request.
Check the captchaUrl you passed. If it contains t=bv the IP is hard-blocked and there is no solvable puzzle on the page at all. Rotate to a cleaner proxy pool; residential or mobile exits usually come back as t=fe and solve normally.
Typically around an hour of normal browsing, but DataDome re-scores on every request and will re-challenge early if the request pattern looks off. Keep the request rate and header order stable and reuse one cookie across a session rather than solving per request.
Solve your first thousand on us.
Create a key, paste it into the sample above, and watch a real token come back. No card, no sales call.