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Prompt Engineer

Prompt Engineer is a prompt generator and prompt optimizer for ChatGPT, Claude, and Gemini. Generate stronger prompts faster for marketing, coding, content, and creative work.

AI

prompt-engineer.io · Added June 17, 2026 · Last analysed June 17, 2026 · via · 43% unique tagline

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.

Prompt Engineer scores well across the board, with complete legal pages and a thorough launch checklist. Main gaps: missing Permissions-Policy and Content-Security-Policy, no sitemap, and tracking cookies set before any opt-in.

Launched on Product Hunt on June 17, 2026. The site is hosted on Amazon.com in the United States. Our crawler found 11 technologies on this site, covering analytics, auth, CSS frameworks, and DNS providers. The stack includes Auth.js, Next.js, and React.

Notably, it's on one of the most common stacks we track, shared by 7,861 launches and more locked down than the typical Product Hunt launch.

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

8.0
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3* Legal
Complete*
1/2 Web Standards
Partial
Vibe Score 25 · Some AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (11)

Infrastructure
DNS GoDaddy DNS
Hosting Vercel
Security HSTS
Build & Framework
Auth Auth.js
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js
Package CDN jsDelivr
UI library shadcn/ui
Analytics & Marketing
Analytics PostHog (3)
SEO Google Search Console

Infrastructure

Network
AS16509 · US
DNS
GoDaddy DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 10 Apr 2026 to 9 Jul 2026
Certificate as captured in this snapshot, not a live check.

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 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 (10)

Cookies (4)
NameLifetimeDetected as
analytics-consent 12mo -
ph_phc_tqG82uGVGmem5Fm9jeX5qfZpasDdfvJg8GFJt7QVcrVX_posthog 12mo PostHog
__Host-authjs.csrf-token session Auth.js
__Secure-authjs.callback-url session Auth.js
Local storage (4)
KeySizeDetected as
input 2 B -
ph_phc_tqG82uGVGmem5Fm9jeX5qfZpasDdfvJg8GFJt7QVcrVX_posthog 845 B PostHog
prompt-injections-enabled 4 B -
__ph_opt_in_out_phc_tqG82uGVGmem5Fm9jeX5qfZpasDdfvJg8GFJt7QVcrVX 1 B PostHog
Session storage (2)
KeySizeDetected as
ph_phc_tqG82uGVGmem5Fm9jeX5qfZpasDdfvJg8GFJt7QVcrVX_posthog 90 B PostHog
ph_phc_tqG82uGVGmem5Fm9jeX5qfZpasDdfvJg8GFJt7QVcrVX_primary_window_exists 4 B PostHog

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)
Page title is 65 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.
Meta description is 175 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

163 ms Server response
78% Faster than peers
2688 ms Largest contentful paint
0.00 Cumulative layout shift
2.1 MB Page weight
4 KB Image weight
3 Third-party domains
0 Console errors
0 Failed requests

5 images: 2 oversized, 4 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.

Vibe Score Breakdown How?

SignalPoints
AI CSS signals +10
AI palette signals +5
AI stack signals +10

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

sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
? Consent manager not detected
Analytics detected; tracking fires without visitor opt-in.
80% unique

Security Headers (4/6)

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

Build

Code splitting
45 JS files
0 CSS files
3 Third-party domains

Brand Colours

App Manifest

Prompt Engineer
display: standalone 3 icons
theme #000000
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.