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Seltz

Seltz console for managing keys, usage, and billing.

Developer Tools

Added April 20, 2026 · Last analysed April 20, 2026 · via Hacker News · 56% unique tagline

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Screenshot of Seltz

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 20 April 2026; the live site may have changed since.

Seltz still has work before launch. Visible gaps: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on April 20, 2026. The site is hosted on Vercel, with a domain registered 9 months before launch. The crawl picked up 7 technologies on this site, covering analytics, CSS frameworks, frameworks, and hosting. The stack includes Next.js, React, and Tailwind CSS.

For context, it's on one of the most common stacks we track, shared by 10,672 launches.

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

2.0
StackScope Score
Poor
52/100 Launch Readiness
Partially ready
1/6 Security Headers
Poor
0/3 Legal
Missing
0/2 Crawl files
Missing
Vibe Score 0 · No 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
Hosting Vercel (3)
Security HSTS (2)
Build & Framework
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (3)
UI library shadcn/ui
Analytics & Marketing
Analytics PostHog (2)

Infrastructure

Network
AMAZON-02 - Amazon.com, Inc., US
AS16509 · US
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 17 Mar 2026 to 15 Jun 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1 year
Registered Jun 2025 · Cloudflare, Inc

Email Security

✓
SPF -all (via apex seltz.ai) Strict (-all). Strong.
✓
DKIM (via apex seltz.ai) Detected on apex seltz.ai
✓
DMARC p=quarantine (via apex seltz.ai) Quarantine (moderate)
?
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.

Readiness Breakdown How?

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

AI Stance

No AI stance declared
✗ llms.txt published
✓ No AI bots blocked in robots.txt
Content-Signal
? No directive declared
Link headers
? None advertised

Well-Known Files

✗ robots.txt
✗ sitemap.xml
✗ security.txt
✗ llms.txt
✗ ads.txt
✗ humans.txt

Legal

? Privacy Policy not detected
? Terms of Service not detected
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
Detection works best on English language sites.

Security Headers (1/6)

✗
Referrer-Policy
✗
X-Frame-Options
✗
Permissions-Policy experimental (check browser support)
✗
X-Content-Type-Options
✗
Content-Security-Policy
✓
Strict-Transport-Security
–
X-XSS-Protection deprecated (use Content-Security-Policy)

Performance

116ms response time
Faster than 91% of sites
1 third-party domains loaded

Build

✓ Code splitting
12 JS files
1 CSS files
1 Third-party domains
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.