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DunningKit

Smart retries + AI dunning emails + hosted card-update page. Recover 40–65% of failed Stripe payments. No code, no revenue percentage. Set up in 5 minutes.

Finance
United States Estimated origin: United States

Added April 12, 2026 · Last analysed April 12, 2026 · via · 33% unique tagline (similar to Rebounce)

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

DunningKit scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Visible gaps: no email security records.

Launched on Product Hunt on April 12, 2026. The site is hosted on Vercel and served through Cloudflare, with a domain registered 4 weeks before launch. Our crawler found 15 technologies on this site, covering security, ai api, analytics, and auth. The stack includes Clerk, Next.js, and React.

It's also on one of the most common stacks we track, shared by 10,677 launches and more locked down than the typical Product Hunt launch.

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

10.0
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Crawl files
Complete
Vibe Score 43 · Some 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 (15)

Infrastructure
CDN Cloudflare
DNS Vercel DNS
Hosting Vercel (2)
Security Cloudflare Bot Management
HSTS (2)
Build & Framework
Auth Clerk (5)
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (4)
UI library shadcn/ui
Analytics & Marketing
Analytics Google Analytics (2)
SEO Google Search Console
Tag management Google Tag Manager
Commerce & Payments
Payments Stripe
AI & Emerging
AI API Google Gemini API

Infrastructure

DNS
Vercel DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 14 Mar 2026 to 12 Jun 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
4 months
Registered Mar 2026 · NameCheap, Inc.

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
?
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.

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)
Meta description is 229 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Vibe Score Breakdown How?

SignalPoints
AI CSS signals +10
AI copy signals +5
AI palette signals +5
AI writing signals +5
AI iconography signals +3
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.

AI Stance

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

Well-Known Files

robots.txt
sitemap.xml (8 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy
Terms of Service
/tos
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).
88% unique

Security Headers (6/6)

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

Performance

1290ms response time
Faster than 7% of sites
3 third-party domains loaded

Build

Code splitting
15 JS files
2 CSS files
3 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.