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Build A Harness

Apache 2.0 visual canvas for AI agent harnesses. Draw once, run on LangGraph, CrewAI, Mastra, or MS Agent Framework. Langfuse observability, HITL, REST/MCP/A2A.

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buildaharness.com · Added June 24, 2026 · Last analysed June 24, 2026 · via Hacker News · 33% unique tagline (similar to Agentrecall)

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 24 June 2026; the live site may have changed since.

Build A Harness covers some of the launch checklist, with a thorough launch checklist, fast page loads, and clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and tracking cookies set before any opt-in.

Launched on Hacker News on June 24, 2026. The site is hosted on Cloudflare in the United States, with a domain registered 2 days before launch. Our crawler found 8 technologies on this site, covering CDN, analytics, DNS providers, and web fonts. The stack includes Cloudflare, Cloudflare DNS, and Fastly.

Notably, it's running the same core stack as 1,328 other launches.

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

Vibe Score 55 · Many AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (8)

Infrastructure
CDN Cloudflare
Fastly
DNS Cloudflare DNS
Hosting GitHub Pages
Build & Framework
Font Google Fonts
Analytics & Marketing
Analytics Google Analytics (4)
SEO Google Search Console
Tag management Google Tag Manager medium

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Google Trust Services
Valid 21 Jun 2026 to 19 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 days
Registered Jun 2026 · Cloudflare, Inc.

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 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 (3)

Cookies (2)
NameLifetimeDetected as
_ga 1y Google Analytics
_ga_HG3KMR8T0N 1y Google Analytics
Session storage (1)
KeySizeDetected as
gh-stars:3IVIS/buildaharness 25 B -

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
Semantic HTML (nav, main, article)
- Favicon present

Performance How?

114 ms Server response
90% Faster than peers
380 ms Largest contentful paint
0.03 Cumulative layout shift
755 KB Page weight
4 Third-party domains
0 Console errors
0 Failed requests

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 copy signals +5
AI writing signals +5
Recognised AI builder signature +30
AI typography signals +5
AI layout signals +5
AI code-structure 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

Welcomes AI crawlers
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

sitemap.xml (6 URLs)
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 (0/6)

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

Build

1 JS files
1 CSS files
4 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.