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Play

A puzzle campaign built on Simten, a TypeScript HDL that simulates in the browser and synthesizes to Verilog.

Added September 2, 2026 · Last analysed September 2, 2026 · via Hacker News

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 2 September 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.

Play covers some of the launch checklist, with a thorough launch checklist and clean crawl signals. Worth fixing first: missing several security headers, incomplete legal pages, and incomplete email security.

Launched on Hacker News on September 2, 2026. The site is served through Cloudflare, with a domain registered 4 months before launch. Our crawler found 7 technologies on this site, covering ui library, CDN, CSS frameworks, and developer tools. The stack includes Tailwind CSS, TanStack Start, and Cloudflare.

It's also running the same core stack as 1,379 other launches.

If you own this site, refresh the snapshot and see the full fix list any time →

Vibe Score 10 · Few AI signals
How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (7)

Infrastructure
CDN Cloudflare
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
JavaScript library TanStack Router (2)
Meta-framework TanStack Start
UI library Lucide Icons
shadcn/ui

Infrastructure

Network
AS13335 · US
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Green hosted
Host runs on renewable energy. Data from The Green Web Foundation.
SSL Certificate
Google Trust Services
Valid 11 Aug 2026 to 9 Nov 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
4 months
Registered Apr 2026 · CloudFlare, Inc.

Email Security

SPF ~all (via apex simten.dev) Soft-fail (~all). Common and accepted.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (1)

Session storage (1)
KeySizeDetected as
tsr-scroll-restoration-v1_3 12 B TanStack Router

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
- Canonical URL declared

Performance How?

337 ms Server response
48% Faster than peers
1604 ms Largest contentful paint
0.00 Cumulative layout shift
433 KB Page weight
1 KB Image weight
1 Third-party domains
0 Console errors
0 Failed requests

1 images: 1 missing alt text

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?

SignalPoints
AI CSS 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.

AI Stance

No AI stance declared
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml (15 URLs)
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
Detection works best on English language sites.

Security Headers (0/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

0 JS files
2 CSS files
1 Third-party domains

Brand Colours

App Manifest

Simten | Design hardware. Bit by bit.
display: standalone 3 icons
theme #0a0a0a
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.