A CAPTCHA that keeps nothing on visitors' devices by default
No cookie, IP address or User-Agent kept by default. No monthly request cap. From $5 a month.
Caputchin is a privacy-first, game-based CAPTCHA. Visitors play a short game to prove they're human, in any of 11 languages, and we store nothing about them: no cookies by default, no fingerprinting, no tracking.
Booting the widget...
Booting the widget...
We changed what a CAPTCHA is.
It used to mean surveillance dressed up as a test. We made verification that proves you're human without learning a thing about you.
A confusing, invasive ordeal.
- Find the fire hydrant. Then the bus. Then the boat.
- Your solving labeled to train their AI models.
- Your fingerprint, harvested as proof.
- Cookies set on your visitors' browsers.
- Visitor IP and User-Agent logged on every check.
- A risk score you can't see, can't appeal.
A game. That's the whole pitch.
- A tiny game humans actually enjoy.
- Your play trains no AI, and is forgotten once verified.
- Zero fingerprints. None collected, none stored.
- No cookies on the visitor's browser by default.
- No IP, no UA, no geo forwarded past our edge.
- Pass or fail. No invisible score.
Six areas of capability.
Verification is the core. The rest is what makes it ship-able at every stage from hobby site to enterprise rollout.
- Explore
Verification
Three gates: the challenge, proof of work and browser instrumentation, verified server-side.
- Explore
Game ecosystem
Open catalog of community games. SDK to write your own.
- Explore
Configuration
Dashboard, site keys, per-site defensive controls.
- Explore
Automation
REST API, MCP server, Terraform provider, access tokens.
- Explore
Analytics
Aggregate counters, session detail, audit logs at the top.
- Explore
Troops
Share site keys without sharing the keys. One seat pool.
Permissive, open, minimal.
One posture, seen from three sides. We give you the most control we can, show you exactly how it works, and ask for the least we can in return.
Permissive
Bend the widget however you like, on any plan including free Solo. Paid tiers buy the managed dashboard and the reach, never the raw capability.
Open
The widget and SDK are open source, Apache-2.0, developed in the open on GitHub. Read every line, fork it, send a pull request.
Minimal
No visitor profile, no fingerprint, no tracking. The architecture cannot collect it, by design, not by policy.
Every client site in one account, with unlimited site keys.
Ship your first challenge today. Solo is free forever, upgrade from the dashboard when a feature you need lives on a higher tier.
Start free