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 
· 62% unique tagline
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 30 April 2026; the live site may have changed since.
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 10,672 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.