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Semfora

AI made content cheap and understanding stayed expensive. Semfora writes the rules your senior engineers keep in their heads as axioms the engine checks against your call graph, measures how each repository changes on every merge, and applies your policy to every pull request.

Developer Tools
United States Estimated origin: United States

Added July 28, 2026 · Last analysed July 28, 2026 · via · 67% 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 28 July 2026; the live site may have changed since.

Semfora is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing several security headers, tracking cookies set before any opt-in, and incomplete email security.

Launched on Product Hunt on July 28, 2026. The site is served through Cloudflare, with a domain registered 3 weeks before launch. The crawl picked up 17 technologies on this site, covering developer tools, DNS providers, security, and analytics. The stack includes Clerk, Tailwind CSS, and TanStack Start.

For context, it's on one of the most common stacks we track, shared by 642 launches.

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

Vibe Score 15 · 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 (17)

Email
Business email Google Workspace (3)
Build & Framework
Auth Clerk (4)
CSS framework Tailwind CSS
Developer tools Rspack
Vite
JavaScript library TanStack Router
Meta-framework TanStack Start
UI library shadcn/ui
Analytics & Marketing
Analytics PostHog (4)
SEO Google Search Console
Business Tools
Error tracking Sentry
Other
Directory Product Hunt

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
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 3 Jul 2026 to 1 Oct 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
28 days
Registered Jul 2026 · Porkbun LLC

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=none None (p=none). Monitoring only.
?
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 (11)

Cookies (7)
NameLifetimeDetected as
cf_clearance 12mo Cloudflare
ph_phc_ngaVxDRvmXSatkfWbNft77xnjrqYFjxoxymm53qASYQa_posthog 12mo PostHog
_cfuvid session Cloudflare
__cf_bm < 1h Cloudflare
__client 1y Clerk
__client_uat 1y Clerk
__client_uat_dGB_lxsu 1y Clerk
Local storage (2)
KeySizeDetected as
ph_phc_ngaVxDRvmXSatkfWbNft77xnjrqYFjxoxymm53qASYQa_posthog 913 B PostHog
__clerk_environment 6.6 KB Clerk
Session storage (2)
KeySizeDetected as
ph_phc_ngaVxDRvmXSatkfWbNft77xnjrqYFjxoxymm53qASYQa_primary_window_exists 4 B PostHog
ph_phc_ngaVxDRvmXSatkfWbNft77xnjrqYFjxoxymm53qASYQa_window_id 38 B PostHog

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 277 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.

Performance How?

1019 ms Server response
10% Faster than peers
1376 ms Largest contentful paint
0.00 Cumulative layout shift
960 KB Page weight
2 KB Image weight
2 Third-party domains
0 Console errors
0 Failed requests

3 images: 2 oversized, 2 without width/height, 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 CSS signals +10
AI copy 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

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

Well-Known Files

robots.txt
sitemap.xml (21 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy
Terms of Service
/terms
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
90% unique

Security Headers (1/6)

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

Build

Code splitting
9 JS files
1 CSS files
2 Third-party domains

Brand Colours

App Manifest

Semfora: Know where change creates risk
display: standalone 3 icons
theme #020c05
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.