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Rubberduck

Show HN: Rubberduck – Software design agent where you make the decisions

Developer Tools

Added May 8, 2026 · Last analysed May 8, 2026 · via Hacker News

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

Rubberduck ships with the basics. Worth fixing first: no Permissions-Policy, incomplete legal pages, and no sitemap.

Launched on Hacker News on May 8, 2026. The site is hosted on Google Cloud and served through Cloudflare, with a domain registered 9 months before launch. We've detected 11 technologies on this site, covering analytics, captcha, CDN, and DNS providers. The stack includes Cloudflare, Cloudflare DNS, and Cloudflare Turnstile.

It's running the same core stack as 292 other launches and tighter on security headers than most Hacker News launches.

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

4.9
StackScope Score
Fair
52/100 Launch Readiness
Partially ready
0/3 Legal
Missing
1/2 Crawl files
Partial
Vibe Score 25 · Some 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 (11)

Infrastructure
CDN Cloudflare (3)
DNS Cloudflare DNS
Hosting Google Cloud (2)
Protocol HTTP/3 (2)
Security HSTS (2)
Email
Business email Google Workspace (3)
Build & Framework
Captcha Cloudflare Turnstile
Video YouTube (2)
Analytics & Marketing
Analytics PostHog (5)
SEO Google Search Console
Commerce & Payments
Payments Stripe

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 24 Mar 2026 to 22 Jun 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1 year
Registered Jul 2025 · Cloudflare, Inc.

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
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.

Storage (5)

Cookies (1)
NameLifetimeDetected as
ph_phc_4PoHoP0e1tYuNIuYPOMC9JS5MjXH2eUui1t30OUtMCC_posthog 12mo PostHog
Local storage (1)
KeySizeDetected as
ph_phc_4PoHoP0e1tYuNIuYPOMC9JS5MjXH2eUui1t30OUtMCC_posthog 1.4 KB PostHog
Session storage (3)
KeySizeDetected as
ph_phc_4PoHoP0e1tYuNIuYPOMC9JS5MjXH2eUui1t30OUtMCC_posthog 388 B PostHog
ph_phc_4PoHoP0e1tYuNIuYPOMC9JS5MjXH2eUui1t30OUtMCC_primary_window_exists 4 B PostHog
ph_phc_4PoHoP0e1tYuNIuYPOMC9JS5MjXH2eUui1t30OUtMCC_window_id 38 B PostHog

Readiness Breakdown How?

Custom title and meta description (partial) missing 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?

SignalPoints
AI copy signals +5
AI writing signals +5
AI CSS signals +15

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 (no directives)
sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
Detection works best on English language sites.

Security Headers (5/6)

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

Performance

313ms response time
Faster than 48% of sites
2 third-party domains loaded

Build

Code splitting
7 JS files
3 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.