New: The State of Indie Launches: June 2026. Who adopts a piece of infrastructure tells you how new it is. Read

← Back to browse

The Prompt Lab

Deterministic prompt linting, scoring, rewriting, and history for teams building reliable prompts.

India Estimated origin: India

Added July 9, 2026 · Last analysed July 9, 2026 · via · 71% 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 9 July 2026; the live site may have changed since.

The Prompt Lab is partway there, with complete legal pages, a thorough launch checklist, and well-configured email security. Visible gaps: missing several security headers and no robots.txt or sitemap.

Launched on Product Hunt on July 9, 2026. The site is hosted on Vercel, with a domain registered 8 weeks before launch. The crawl picked up 9 technologies on this site, covering CSS frameworks, DNS providers, business email, and frameworks. The stack includes Next.js, React, and Tailwind CSS.

For context, it's on one of the most common stacks we track, shared by 9,831 launches.

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

Vibe Score 5 · Few 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 (9)

Infrastructure
DNS Vercel DNS
Hosting Vercel
Security HSTS
Email
Business email GoDaddy Email (2)
Build & Framework
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (4)
UI library Lucide Icons
Analytics & Marketing
SEO Google Search Console

Infrastructure

Network
AS16509 · US
DNS
Vercel DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Not green hosted
No green-energy record. Data from The Green Web Foundation.
SSL Certificate
Let's Encrypt
Valid 14 May 2026 to 12 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1 month
Registered May 2026 · GoDaddy

Email Security

SPF -all Strict (-all). Strong.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC p=reject Reject (strict). Strong.
?
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 (2)

Local storage (1)
KeySizeDetected as
thepromptlab.browser_id 44 B -
Session storage (1)
KeySizeDetected as
thepromptlab.session_id 44 B -

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
- Canonical URL declared

Performance How?

1374 ms Server response
6% Faster than peers
1420 ms Largest contentful paint
0.00 Cumulative layout shift
274 KB Page weight
8 KB Image weight
0 Console errors
0 Failed requests

1 images: 1 without width/height

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 palette signals +5

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
sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy
Terms of Service
/terms
88% unique

Security Headers (1/6)

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

Build

Code splitting
8 JS files
1 CSS files
0 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.