PlainKey

Passkey authentication made plain and simple. Add passkeys to your web app in a few lines of code. Europe-first infrastructure.

Developer Tools

Added May 4, 2026 · Last analysed May 4, 2026 · via

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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 4 May 2026; the live site may have changed since.

PlainKey looks production-ready overall, with complete legal pages, well-configured email security, and clean crawl signals. Visible gaps: missing several security headers.

Launched on Product Hunt on May 4, 2026. The site is hosted on Vercel. We've detected 10 technologies on this site, covering analytics, CSS frameworks, DNS providers, and business email. The stack includes Tailwind CSS, Vue.js, and Google Search Console.

It's one of 36 launches on this exact stack.

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

6.6

StackScope Score

Good

64/100 Launch Readiness

Well prepared

1/6 Security Headers

Poor

3/3 Legal

Complete

2/2 Crawl files

Complete

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 (10)

Infrastructure

DNS	Porkbun DNS
Hosting	Vercel (2)
Security	HSTS (2)

Business email	Proton Mail (3)
Transactional email	Mailjet (2)

Build & Framework

CSS framework	Tailwind CSS
Framework	Vue.js

Analytics & Marketing

Analytics	Umami
SEO	Google Search Console

Business Tools

Monitoring	Phare

Infrastructure

Network

AMAZON-02 - Amazon.com, Inc., US

AS16509 · US

DNS

Porkbun DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

Green hosting

Not green hosted

No green-energy record. Data from The Green Web Foundation.

SSL Certificate

Let's Encrypt

Valid 28 Apr 2026 to 27 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=quarantine 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.

Storage (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

✓ Custom title and meta description

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

Vibe Score Breakdown How?

Signal	Points
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

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (15 URLs)

✗ security.txt

✓ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/privacy

✓ Terms of Service

/terms

? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).

100% unique

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

174ms response time

Faster than 71% of sites

3 third-party domains loaded

Build

2 JS files

5 CSS files

3 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.