Calcis
Know exactly what every LLM API call will cost before you make it. Pre-flight cost estimation for OpenAI, Anthropic, and Google models.
Estimated origin: Australia
Added April 30, 2026
· Last analysed April 30, 2026 · via 
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 30 April 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
Calcis scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Visible gaps: incomplete email security.
Launched on Product Hunt on April 30, 2026. The site is hosted on Vercel and served through Cloudflare, with a domain registered 3 weeks before launch. We've detected 16 technologies on this site, covering directory, security, auth, and captcha. The stack includes Clerk, Next.js, and React.
It's on one of the most common stacks we track, shared by 15,031 launches and more locked down than the typical Product Hunt launch.
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Tech Stack (16) · Indie stack
| CDN |
Cloudflare
|
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
(3)
|
| Security |
Cloudflare Bot Management
|
| HSTS (2) |
| Email forwarding |
Cloudflare Email Routing
(2)
|
| Transactional email |
Resend
|
| Auth |
Clerk
(6)
|
| Captcha |
Cloudflare Turnstile
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(3)
|
| SEO |
Google Search Console
|
| Payments |
Stripe
|
| Directory |
Product Hunt
|
SaaSHub
|
Infrastructure
Email Security
Storage (6)
| Name | Lifetime | Detected as |
|---|---|---|
| _cfuvid | session | Cloudflare |
| __cf_bm | < 1h | Cloudflare |
| __client | 1y | Clerk |
| __client_uat | 1y | Clerk |
| __client_uat_TQtwXqBm | 1y | Clerk |
| Key | Size | Detected as |
|---|---|---|
| __clerk_environment | 6.3 KB | Clerk |
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI onboarding signals | +5 |
| AI palette signals | +5 |
| AI stack signals | +10 |
| AI layout signals | +5 |
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.