FCaptcha
Quiet signalOpen source invisible CAPTCHA that catches AI agents
Launched 3d ago
Signal
17
Velocity
0
What this means
+41%Launching in a 41% WoW growing category.
Security had 38 launches this week vs 27 last.
18Founder Conviction Index: 18 — low signal.
Few of the conviction sub-signals (reputation, velocity, buyer-intent, tagline clarity) are firing yet.
Prediction
Top-5 finish probability
4%
today
Projected end-of-day votes
2range 2–3
Trajectory
stable
Not enough snapshots yet to detect trajectory.
Speed vs peers
0.7×
60 comparable launches
About
FCaptcha is a self-hosted, MIT-licensed CAPTCHA with no puzzle. One click or fully invisible. It catches headless browsers, Puppeteer, Playwright, Selenium, and the new wave of AI agents driving real browsers (vision click bots, computer-use agents). Verifies Web Bot Auth signed crawlers so polite agents get through. Drop-in for Turnstile, reCAPTCHA and hCaptcha: same siteverify contract. No cookies, no third-party data. WCAG 2.2 AA, false-positive budget enforced in CI. Go, Node or Python.
Attention & discussion velocity
Performance
Velocity0
Vote pace vs average
Momentum0
Sustained over 6h
Virality0
Spread × engagement
Engagement—
not measured
Signal sources
1 of 6 active- Launch tracking2 readings since we picked it up
- AI analysisnot yet enriched
- Comment intelligencethread not yet analysed
- Outside discussionnot checked — domain is a storefront or shared
- Revenue signalsno match on this domain
- Editorial scoringbelow the signal threshold for this pass
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.