Bot defence built for
the age of agentic AI.

We help businesses welcome legitimate users and trusted AI agents — and stop the bad bots that ruin everything for both.

The web used to have two kinds of visitors: humans and bots. Today there's a third — AI agents acting on behalf of real people. Block them blindly and you lose customers; let them all through and you invite abuse. The Forrester Wave 2026 renamed the category from "bot management" to "bot and agent trust management" — and Prosopo has been building for that shift from the start.

Existing bot-protection services are invasive for users and expensive for the businesses paying for them. We change that by being transparent and privacy-focused. We're proudly GDPR-compliant and open-source.

We solve the problems that keep your team up at night:

AI SaaS & Freemium Apps: Stop fake signups draining your API credits — while letting trusted agents acting for paying customers through.
E-commerce & Ticketing: Stop scalper bots, price scrapers and checkout automation — while welcoming AI shopping agents acting for real customers.
Content & Publishers: Distinguish trusted crawlers and authorised AI agents from unwanted scraping — policy-driven, not all-or-nothing.
Open Source & Indie Devs: Deploy a privacy-first CAPTCHA alternative with full control and a free-forever tier.
Scaling SaaS Teams: Establish trust on every request — human, agent or bot — at scale, with the SLAs and reporting enterprise security teams need.

Agent-Aware

Built for the Forrester "trust-first" model. Granular agent permissions and behavioural verification, not binary block/allow.

Privacy-First

Minimal data collection. No third-party tracking. No data sales. GDPR-compliant by design.

Open Source

Fully transparent. Auditable. Community-driven development on GitHub.

Cost-Effective

Transparent pricing from $39/month. Free-forever tier. No hidden fees.

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By the numbers

Trusted by companies of all sizes.

Active websites

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Monthly verifications

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Bots stopped per month

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Reviews

Our customers love us.

Hundreds of businesses have made the switch from reCAPTCHA and hCaptcha to Prosopo. Here's what they have to say.

Prosopo's CAPTCHA widget

I've installed Prosopo's CAPTCHA widget on my website to filter out spam from my contact form. Getting it working was a little bit tricky but the support from Chris has been first class.
I wanted to use a CAPTCHA which was as easy as possible for my website's visitors while respecting their privacy and which didn't use cookies. Prosopo's CAPTCHA meets all these criteria.
Update - after more than a week I haven't had a single spam form submission.

Effortless Integration and Outstanding Support with Procaptcha

I use Procaptcha with React. Procaptcha has been very easy to implement as they maintain a wrapper component that can be easily pulled from NPM. They have incredible customer service and are happy to answer any questions I have or help their community with their product. The component itself is flexible, allows styling with inline CSS, and even allows for theming. The puzzle is also not too difficult to solve and is a great middle ground as far as Captchas go. I originally came from using Cloudflare Turnstile and hCaptcha and have enjoyed my experience with Procaptcha significantly more.

Amazing experience

Switching to Prosopo's Procaptcha was a massive improvement over other solutions we've previously tried which include hCaptcha and reCaptcha.

We managed to greatly reduce the friction and churn rate of our users

Free Site Audit
Discover if you're vulnerable to bot & fraud attacks.

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