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Cosine Swarm

Finally, AI that writes code like it has to maintain it. See everything we've shipped.

United Kingdom Estimated origin: United Kingdom

Added April 21, 2026 · Last analysed April 21, 2026 · via · 50% 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 21 April 2026; the live site may have changed since.

Cosine Swarm scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Main gaps: no sitemap and tracking cookies set before any opt-in.

Launched on Product Hunt on April 21, 2026. The site is hosted on Vercel and served through Cloudflare. Our crawler found 20 technologies on this site, covering transactional email, seo, ai api, and analytics. The stack includes Astro, Tailwind CSS, and 1Password.

It's also on one of the most common stacks we track, shared by 139 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 →

8.9
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3* Legal
Complete*
1/2 Crawl files
Partial
Vibe Score 5 · 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 (20) · Indie stack

Infrastructure
CDN Cloudflare (3)
DNS Cloudflare DNS
Hosting Vercel (2)
Protocol HTTP/3 (2)
Security HSTS (2)
Email
Business email Google Workspace
Email marketing Klaviyo
Transactional email Firebase Trigger Email
Resend
Build & Framework
BaaS Firebase (2)
CSS framework Tailwind CSS
Meta-framework Astro
UI library shadcn/ui
Analytics & Marketing
Analytics PostHog
Marketing Apple Domain Verification
SEO Apple Business Connect
Google Search Console
Business Tools
SaaS 1Password
Sales intelligence Leadfeeder
AI & Emerging
AI API turbopuffer

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Enabled
DNSKEY records published. DNS responses signed.
SSL Certificate
Google Trust Services
Valid 3 Apr 2026 to 2 Jul 2026
Certificate as captured in this snapshot, not a live check.

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=reject Reject (strict). Strong.
?
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)

Vibe Score Breakdown How?

SignalPoints
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
/legal/privacy
Terms of Service
/legal/terms
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
70% unique

Security Headers (6/6)

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

Performance

163ms response time
Faster than 79% of sites
2 third-party domains loaded

Build

Code splitting
10 JS files
2 CSS files
2 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.