Captchainbox
Stop AI spam from flooding your inbox and calendar. Unknown senders solve a CAPTCHA or pay a fee to get in. Trusted contacts get through as usual.
Estimated origin: Germany
StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 6 July 2026; the live site may have changed since.
Captchainbox scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Main gaps: incomplete email security.
Launched on Hacker News on July 6, 2026. The site is hosted on Vercel, with a domain registered 4 months before launch. Our crawler found 15 technologies on this site, covering ai api, analytics, auth, and baas. The stack includes Google OAuth, Next.js, and React.
It's also on one of the most common stacks we track, shared by 9,452 launches and more locked down than the typical Hacker News launch.
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Tech Stack (15) · Indie stack
| DNS |
Namecheap DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| Email forwarding |
Namecheap Email Forwarding
(2)
|
| Transactional email |
Resend
|
| Auth |
Google OAuth
|
| BaaS |
Supabase
|
| Captcha |
Cloudflare Turnstile
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(5)
|
| UI library |
Lucide Icons
|
| Analytics |
Umami
(2)
|
| Payments |
Stripe
|
| AI API |
Anthropic
|
Infrastructure
Email Security
Storage (0)
Readiness Breakdown How?
Performance How?
⚠ 2 images: 2 oversized
Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI copy signals | +5 |
| AI palette signals | +5 |
| AI stack signals | +10 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.