Opus

A listening companion for classical music, with introductions that follow the piece you are hearing.

Education

opus.cyberic.app · Added June 17, 2026 · Last analysed June 17, 2026 · via · 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 17 June 2026; the live site may have changed since.

Opus looks production-ready overall, with complete legal pages, a thorough launch checklist, and fast page loads. Worth fixing first: missing several security headers and incomplete email security.

Launched on Product Hunt on June 17, 2026. The site is hosted on Cloudflare in the United States, with a domain registered 11 months before launch. We've detected 7 technologies on this site, covering analytics, CDN, CSS frameworks, and web fonts. The stack includes Tailwind CSS, Cloudflare, and Cloudflare Web Analytics.

It's running the same core stack as 1,126 other launches.

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

7.1

StackScope Score

Good

100/100 Launch Readiness

Launch ready

0/6 Security Headers

Poor

3/3* Legal

Complete*

2/2 Web Standards

Complete

92/100 Performance

Fast

Vibe Score 0 · No AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (7)

Infrastructure

CDN	Cloudflare
Protocol	HTTP/3

Build & Framework

CSS framework	Tailwind CSS
Font	Google Fonts

Analytics & Marketing

Analytics	Cloudflare Web Analytics
	Google Analytics (2)

Business Tools

Forms	Tally

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Google Trust Services

Valid 15 Jun 2026 to 13 Sep 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

11 months

Registered Jul 2025 · CloudFlare, Inc.

Email Security

✓

SPF ~all (via apex cyberic.app) Soft-fail (~all). Common and accepted.

✓

DKIM (via apex cyberic.app) Detected on apex cyberic.app

✗

DMARC p=none (via apex cyberic.app) 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 (0)

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

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)

Performance How?

121 ms Server response

88% Faster than peers

536 ms Largest contentful paint

0.10 Cumulative layout shift

1.0 MB Page weight

461 KB Image weight

6 Third-party domains

0 Console errors

0 Failed requests

⚠ 8 images: 8 oversized, 3 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.

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 (1 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

✓ Terms of Service

? Consent manager not detected

Analytics detected; tracking fires without visitor opt-in.

92% unique

Mentions:

Do Not Sell Updated: 2026-03-14

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)

Build

3 JS files

2 CSS files

6 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.