The Twistor's Engineer
Ten engineering-practice skills for Claude Code, Codex, Cursor, Copilot, Gemini CLI and any agent that reads SKILL.md. 150 rules written as instead of X, do Y, each traced to a public engineering post.
Added 10 Nov 2026
Analysed 10 Nov 2026
via 
What we found
- It sends none of the six security headers we check.
- It has a privacy policy, but we found no terms of service.
- The site is served through Cloudflare, with a domain registered 1 week before launch.
- It welcomes AI crawlers and publishes an llms.txt.
Built with: 3 technologies
| Technology | Type |
|---|---|
| Infrastructure | |
Cloudflare
|
CDN |
| HTTP/3 | Protocol |
| Build & Framework | |
Google Fonts
|
Font |
Each technology links to its own page: which other new sites launched with it.
Site checks
| 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) | |
| Meta description is 201 characters Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear. |
| Referrer-Policy | |
| X-Frame-Options | |
| Permissions-Policy experimental | |
| X-Content-Type-Options | |
| Content-Security-Policy | |
| Strict-Transport-Security | |
| X-XSS-Protection deprecated, not counted |
| Privacy policy /2024/08/27/security/privacy-aware-infrastructure-purpose-limitation-meta/ | |
| Terms of service not detected |
| robots.txt | |
| sitemap.xml 2 URLs | |
| security.txt optional | |
| llms.txt | |
| ads.txt only for ad-funded sites | |
| humans.txt optional |
| llms.txt published | |
| No AI bots blocked in robots.txt | |
| Content-Signal none declared | |
| Link headers none advertised |
| State | Record | Status |
|---|---|---|
| SPF ~all | Soft-fail (~all), common and accepted (from twistorlabs.com) | |
| DMARC p=quarantine | Quarantine (from twistorlabs.com) | |
| DKIM | Found (from twistorlabs.com) | |
| MTA-STS | Not deployed | |
| TLS-RPT | Not configured |
Hosting and network
| Network | CLOUDFLARENET - Cloudflare, Inc., US AS13335, US |
|---|---|
| DNSSEC | Not enabled DNS answers are unsigned |
| Certificate | Google Trust Services valid 30 Oct 2026 to 28 Jan 2027, as captured |
| Domain age | 15 days registered Oct 2026, GoDaddy.com, LLC |
| Green hosting | Yes per The Green Web Foundation |
| Page build | 1 JS file, 2 CSS files 3 third-party domains |
| Brand colours |
Storage: 0 items
Nothing stored in the browser on page load.
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 141 ms | good, faster than 80% of sites |
| Largest contentful paint | 452 ms | good |
| Layout shift | 0.03 | good |
| Page weight | 737 KB | light |
| Third-party domains | 3 | |
| Console errors | 0 | none |
| Failed requests | 0 | none |
From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure
Notes
-
Looks AI-built: some AI signals.
How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
Which signals fired
Signal Points AI onboarding signals +5 AI typography signals +15 AI code-structure signals +5 - Performance comes from one render on 10 November 2026 and will vary between visits.
How we know
FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 10 November 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.