jsoncompat

jsoncompat: json schema compatibility checker

Developer Tools

Added April 6, 2026 · Last analysed April 10, 2026 · via Hacker News · 75% unique tagline

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

jsoncompat is early-stage. Worth fixing first: missing several security headers, incomplete legal pages, and no sitemap.

Launched on Hacker News on April 6, 2026. The site is served through Cloudflare. We've detected 6 technologies on this site, covering analytics, CDN, CSS frameworks, and developer tools. The stack includes Tailwind CSS, Cloudflare, and Cloudflare DNS.

It's running the same core stack as 5,950 other launches.

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

2.6

StackScope Score

Poor

52/100 Launch Readiness

Partially ready

0/6 Security Headers

Poor

0/3 Legal

Missing

1/2 Crawl files

Partial

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 (6)

Infrastructure

CDN	Cloudflare (3)
DNS	Cloudflare DNS
Protocol	HTTP/3 (2)

Build & Framework

CSS framework	Tailwind CSS
Developer tools	Vite

Analytics & Marketing

Analytics	Cloudflare Web Analytics

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNS

Cloudflare DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

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 (partial) missing custom <title>

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

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

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

Detection works best on English language sites.

Security Headers (0/6)

✗

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

98ms response time

Faster than 94% of sites

1 third-party domains loaded

Build

2 JS files

1 CSS files

1 Third-party domains

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