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Kyushu

A self-hostable Wasm sandbox for JavaScript workers.

kyushu.dev · Added June 7, 2026 · Last analysed June 7, 2026 · via Hacker News · 69% 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 7 June 2026; the live site may have changed since.

Kyushu is partway there, with a thorough launch checklist and fast page loads. Main gaps: missing Permissions-Policy and Content-Security-Policy, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on June 7, 2026. The site is hosted on Hetzner Online GmbH in Germany, with a domain registered 2 weeks before launch. The crawl picked up 7 technologies on this site, covering DNS providers, documentation, business email, and meta-frameworks. The stack includes Astro, Caddy, and HSTS.

For context, it's on one of the most common stacks we track, shared by 104 launches and more locked down than the typical Hacker News launch.

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

Vibe Score 10 · Few AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (7)

Infrastructure
DNS Namecheap DNS
Protocol HTTP/3
Security HSTS
Server Caddy
Email
Business email Namecheap Email Forwarding
Build & Framework
Documentation Starlight
Meta-framework Astro

Infrastructure

Network
AS24940 · DE
DNS
Namecheap DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 30 May 2026 to 28 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
15 days
Registered May 2026 · Namecheap Inc.

Email Security

SPF ~all 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)

Local storage (1)
KeySizeDetected as
starlight-theme 0 B -

Readiness Breakdown How?

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

Performance How?

99 ms Server response
94% Faster than peers
288 ms Largest contentful paint
0.00 Cumulative layout shift
80 KB Page weight
3 KB Image weight
1 Third-party domains
0 Console errors
0 Failed requests

2 images: 1 oversized, 2 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 copy signals +5
AI palette 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.

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
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 (4/6)

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

Build

HTML minified
CSS minified
JS minified
3 JS files
4 CSS files
1 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.