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I Built Paul Graham's Intellectual Captcha Idea

7 real claims. Most people can't tell which ones are wrong. Only 1% get 6 or more right.

Education

Added April 6, 2026 · Last analysed April 10, 2026 · via Hacker News · 60% unique tagline

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Screenshot of I Built Paul Graham's Intellectual Captcha Idea

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.

I Built Paul Graham's Intellectual Captcha Idea covers some of the launch checklist, with a thorough launch checklist, well-configured email security, and fast page loads. What needs work: missing several security headers, incomplete legal pages, and no robots.txt.

Launched on Hacker News on April 6, 2026. The site is served through Cloudflare, with a domain registered 7 weeks before launch. Our crawler found 10 technologies on this site, covering analytics, CDN, DNS providers, and business email. The stack includes cdnjs, Cloudflare, and Cloudflare DNS.

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

4.9
StackScope Score
Fair
100/100 Launch Readiness
Launch ready
2/6 Security Headers
Weak
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 (10)

Infrastructure
CDN Cloudflare (3)
DNS Cloudflare DNS
Protocol HTTP/3 (2)
Email
Business email Zoho Mail (2)
Transactional email Resend
Build & Framework
Icon font Font Awesome
Package CDN cdnjs
Analytics & Marketing
Analytics Google Analytics (2)
SEO Google Search Console
Business Tools
SaaS Zoho

Infrastructure

Network
CLOUDFLARENET - Cloudflare, Inc., US
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Enabled
DNSKEY records published. DNS responses signed.
Domain Age
5 months
Registered Feb 2026 · Cloudflare, Inc.

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.

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)

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 (3 URLs)
✓ security.txt
✓ llms.txt
✓ ads.txt
✓ humans.txt

Legal

? 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 (2/6)

✓
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

123ms response time
Faster than 89% of sites
3 third-party domains loaded

Build

2 JS files
3 CSS files
3 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.