Early access — 50% off your first 3 months withEARLYBUSTERS
No-CAPTCHA bot detection

Block the bots. Keep every human.

Protect your sensitive forms without CAPTCHA. We capture the timing of interactions — never what your users type.

  • Timing only — we never see what your users type
  • Verdict in <50 ms · edge-deployed
  • EU-hosted · zero third-party cookies · DPA on request

10,000 verifications free · no card · live in 5 min.

verify.ts200 · 24ms
import { botbusters } from "@botbusters/sdk";

const verdict = await botbusters.verify({
  apiKey: process.env.BB_KEY,
  signals: collect(), // <- 1 line in your form
});

if (verdict.action === "deny") block(req);
// → { score: 0.97, action: "allow", risk: "low" }
<50ms verdict~3 KB SDK0 content data seenLearns every session
CAPTCHA

Why not a CAPTCHA?

CAPTCHA punishes your real customers to catch a few bots. We do the opposite.

CAPTCHA drives humans away.

Public studies show −15% to −40% conversion on forms protected by reCAPTCHA or hCaptcha. You pay twice: in friction and in lost signups.

CAPTCHA works for Google, not for you.

Your visitors train Google's models for free — Street View, image labels, reCAPTCHA v2/v3 — and their behavior is shipped off to a third party.

Modern bots solve CAPTCHAs.

Solver services charge $2 per 1,000 CAPTCHAs. You pay for friction, the bots walk in anyway.

We never touch your humans.

Zero pixels added to your UX. The only thing we reduce is fraud, never your conversion rate.

How we compare

Same job, opposite philosophy.

SolutionVisitor frictionVisitor privacyModern AI botsConversion impact
reCAPTCHA v3 (Google) Moderate (checkbox) Sent to Google Bypassed −15% to −40% conversion
hCaptcha Heavy (puzzles) Sent to a 3rd party Partially blocked −15% to −40% conversion
DataDome Moderate (checkbox) Sent to a 3rd party Blocked −5% to −15% conversion
Bot Busters
None — invisible Processed in EU, no PII Blocked No forced friction on humans

Conversion-impact ranges based on public studies of CAPTCHA friction. v1 — to be refined with our own A/B data.

Three layers, one promise: your users don't notice

Layer 1 — Passive check

On every session, in the background. Verdict in <50 ms. Invisible when the signal is clear — no puzzle, no checkbox.

Layer 2 — BustABot Challenge

Step-up only when the passive verdict is ambiguous. A short mini-game plus one typed answer (paste blocked). We measure timing — never the text.

Layer 3 — Continuous learning

The engine adapts to new evasion patterns across sessions. Your tenant sharpens over time, without you shipping anything.

Timing only, never content

One <script>, one POST. Verdict returned as a signed single-use token — verified server-side with your secret key.

See it work — pick your angle

Four ways to feel what we do. Same gateway, four different lenses.

Watching you for 8 seconds

Move your mouse, scroll, click — whatever. We score from public signals only. Nothing leaves this tab.

Convinced?

Get your free Shield key. 10,000 verifications/month.

Drop one <script> on your site. Live in 5 minutes.

Get my free key

What bots are costing you

Estimated monthly savings20,250
Lock in these savings

Want this estimate by email + a free 10k key?

Pay for the bot checks that matter.

1 action = 1 bot-vs-human check on a sensitive event (signup, login, checkout, form). Passive scoring on the rest of your traffic stays free — we don't compete with reCAPTCHA on price.

Early access — first 50 design partners. · 12 / 50 spots taken

Shield

Free forever

Try-before-buy. Protect one sensitive endpoint at zero cost.

Free
  • 1,000 protected actions / month
  • Unlimited passive checks
  • 1 domain · 1 API key
  • Community support · 7-day logs
  • No PII, no third-party cookies
Get my key

Starter

Solo / small site

Anti-bot as a real service: SLA, custom Challenge, team seats.

€49/ month
  • 6,000 protected actions / month (~0.82¢)
  • 3 domains · 3 API keys
  • 99.5% SLA · email 24h
  • 3 custom Challenge questions
  • 30-day logs · basic webhooks
Start Starter
Recommended

Pro

Growth

For teams protecting several products with real fraud-abuse pressure.

€199/ month
  • 30,000 protected actions / month (~0.66¢)
  • 10 domains · 10 keys · 10 seats
  • 99.9% SLA · email 4h + chat
  • 20 custom Challenge questions
  • 90-day logs · Slack/Discord webhooks
Start Pro

Business

Scale

High-volume anti-abuse with priority support and long retention.

€599/ month
  • 120,000 protected actions / month (~0.50¢)
  • Unlimited domains, keys & seats + RBAC
  • 99.95% SLA · priority 1h + Slack
  • Unlimited custom Challenge + question bank
  • 1-year logs · custom endpoints · CSV/BI export
Start Business

Enterprise

Negotiated

Dedicated edge, on-prem option, SSO, signed DPA, named deal-registration for partners.

  • Dedicated gateway · on-prem option
  • SSO + audit logs
  • Custom SLA + dedicated support
  • Affiliate deal-registration
Talk to the team

No commitment: €0.01 / action. Prepaid packs: 50€ → 5,000 · 200€ → 22,000 (−10%) · 500€ → 62,500 (−20%) · 2,000€ → 285,000 (−30%). Auto-recharge available.

Prices v1 — early access. 30% off the first 3 months with EARLYBUSTERS. All amounts in EUR.

Frequently asked

Ship without bots in the way.

10,000 verifications free. No card. Live in 5 minutes.

Get my API key
Get my API key