About ZeroCaptcha
ZeroCaptcha is a CAPTCHA-solving API for developers who automate, test or collect data on sites they are allowed to access. It solves Cloudflare Turnstile today. It passes Cloudflare challenge pages too, through your proxy, and returns the cf_clearance cookie with the user agent it was issued for. See the Cloudflare WAF and 5-second challenge solver.
ZeroCaptcha is the service at zerocaptcha.io. It has no relation to zerocaptcha.com, which is another company's product.
How we run it
You pay for solved tasks only
A task's price is held when you create it and charged only when its token is ready. A task that fails or expires costs nothing, and its hold goes straight back to your balance; a refused task holds nothing.
Nothing between you and the first task
Sign up with an email and a password, confirm your email from the link we send, create your key in one click, add funds and send a task. Two-factor is there when you want it.
Your client already speaks it
The API takes the createTask format and 2Captcha's in.php and res.php as well as its own REST calls, so moving over is usually a new host and a new key.
Prepaid, in plain terms
Balances are in US dollars, topped up in crypto through NOWPayments from $10 with no maximum. Top-ups are final, and every one gets a numbered receipt.
Run on our own servers
The API, the dashboard and this site run on servers we operate. NOWPayments, the payment processor, is the one outside service your money passes through.
Authorized use, handled by people
Every task is subject to the Acceptable Use Policy. People read every abuse report and opt-out request, and block a site by hand; nothing is blocked by a rule on its own.
Who writes the guides and the blog
The guides and the blog are written by ZeroCaptcha Engineering, the team that builds and runs the API. Articles are drafted with AI tools, then checked against the API's own code and against the primary sources each one cites: Cloudflare's, Google's and each vendor's documentation, read on the date the article gives.
Every article names its sources, shows when it was published and last updated, and says plainly what ZeroCaptcha does not do. Code samples call the API as its reference documents it. When a fact changes, the article is corrected and its update date moves; the date never moves without a real change.
Reach us
- Questions about the API, pricing or an account: contact us, and a person answers by email.
- A site ZeroCaptcha was used against: report abuse.
- Your own site, kept out of ZeroCaptcha: ask to opt it out.
- How the platform is doing right now: the status page, read live from the API.