Verifiziertes AgentReady.md-Zertifikat
Ausgestellt am sig: 4a11b5ba8a9cb9b4 Verifizieren →

Analysierte URL

https://stackharden.com

Weitere URL analysieren

KI-Ready Score

76 / B

Gut

von 100

Token-Einsparung

HTML-Tokens 5735
Markdown-Tokens 115
Einsparung 98%

Score-Aufschlüsselung

Semantisches HTML 93/100
Inhaltseffizienz 70/100
KI-Auffindbarkeit 47/100
Strukturierte Daten 92/100
Zugänglichkeit 93/100

Emerging Protocols

0 von 3 erkannt

Well-known-Endpunkte, nach denen KI-Agenten suchen. Erkannt bedeutet, dass ein Agent Ihren Dienst automatisch finden und verbinden kann.

  • OAuth Discovery RFC 8414
    /.well-known/oauth-authorization-server
  • MCP Server Card Anthropic
    /.well-known/mcp.json
  • A2A Agent Card Google
    /.well-known/agent.json

Ihre Website hat keine llms.txt-Datei. Dies ist der aufkommende Standard, um KI-Agenten beim Verständnis Ihrer Website-Struktur zu helfen.

So implementieren Sie es

Erstellen Sie eine /llms.txt-Datei gemäß der llmstxt.org-Spezifikation. Fügen Sie eine Beschreibung Ihrer Website und Links zu Ihren wichtigsten Seiten hinzu.

Ihre Seite hat ein niedriges Verhältnis von tatsächlichem Inhalt zum gesamten HTML. Ein Großteil des Seitengewichts besteht aus Markup, Skripten oder Styles statt Inhalt.

So implementieren Sie es

Verlagern Sie CSS in externe Stylesheets, entfernen Sie Inline-Styles, minimieren Sie JavaScript und stellen Sie sicher, dass sich das HTML auf die Inhaltsstruktur konzentriert.

Ihre Website unterstützt kein Markdown for Agents. Dieser Cloudflare-Standard ermöglicht KI-Agenten, Inhalte im Markdown-Format anzufordern und reduziert den Token-Verbrauch um ~80%.

So implementieren Sie es

Implementieren Sie eines oder mehrere: (1) Auf Accept: text/markdown mit Markdown-Inhalt antworten. (2) .md-URLs bereitstellen (z.B. /seite.md). (3) <link rel="alternate" type="text/markdown">-Tags hinzufügen. (4) Link-HTTP-Header für Markdown-Erkennung hinzufügen.

{\n res.setHeader('Vary', 'Accept');\n res.setHeader('Link', '; rel=\"alternate\"; type=\"text/markdown\"');\n if ((req.headers.accept || '').includes('text/markdown')) {\n res.type('text/markdown; charset=utf-8');\n return res.send(renderMarkdown('page'));\n }\n res.render('page');\n});"},{"id":"fastify","label":"Fastify","language":"javascript","filename":"server.js","code":"// Mechanisms 1 + 4: content negotiation + Link header\nfastify.get('/page', async (req, reply) => {\n reply.header('Vary', 'Accept');\n reply.header('Link', '; rel=\"alternate\"; type=\"text/markdown\"');\n if ((req.headers.accept || '').includes('text/markdown')) {\n return reply.type('text/markdown; charset=utf-8').send(renderMarkdown('page'));\n }\n return reply.view('/page.ejs');\n});"},{"id":"nextjs","label":"Next.js","language":"typescript","filename":"app/page/route.ts","code":"// Next.js App Router — Route Handler returning Markdown\nimport { NextRequest } from 'next/server';\nimport { renderMarkdown } from '@/lib/md';\nexport async function GET(req: NextRequest) {\n const accept = req.headers.get('accept') || '';\n if (accept.includes('text/markdown')) {\n return new Response(await renderMarkdown('page'), {\n headers: {\n 'Content-Type': 'text/markdown; charset=utf-8',\n 'Vary': 'Accept',\n },\n });\n }\n // Fall through to the page component\n return new Response(null, { status: 404 });\n}"},{"id":"wordpress","label":"WordPress","language":"php","filename":"functions.php","code":"post_content));\n exit;\n});"},{"id":"static","label":"Hugo / Jekyll / Astro","language":"txt","filename":"static/page.md","code":"# Mechanism 2: serve .md alongside .html\n# Hugo: place page.md in /static/ — built unchanged\n# Jekyll: drop page.md in /assets/ — copied as-is\n# Astro: src/pages/page.md.ts that exports a GET returning markdown\n\n# Then advertise with mechanism 3 in :\n# "}] }'>

Ihre Überschriftenstruktur hat Probleme (übersprungene Ebenen oder mehrere h1-Tags). Eine saubere Hierarchie hilft KI-Agenten, die Inhaltsorganisation zu verstehen.

So implementieren Sie es

Stellen Sie sicher, dass Sie genau ein <h1> pro Seite haben und die Überschriften einer sequentiellen Reihenfolge folgen: h1 > h2 > h3. Überspringen Sie keine Ebenen (z.B. h1 direkt zu h3).

Fehlende oder unvollständige Open-Graph-Tags. OG-Tags helfen KI-Agenten (und sozialen Plattformen), Titel, Beschreibung und Bild Ihrer Seite zu verstehen.

So implementieren Sie es

Fügen Sie og:title, og:description und og:image Meta-Tags zum <head> Ihrer Seite hinzu.

post_content), 30);\n $image = get_the_post_thumbnail_url($post, 'large') ?: 'https://yoursite.com/og-image.jpg';\n $url = get_permalink($post);\n printf('' . \"\\n\", esc_attr($title));\n printf('' . \"\\n\", esc_attr($desc));\n printf('' . \"\\n\", esc_url($image));\n printf('' . \"\\n\", esc_url($url));\n echo '' . \"\\n\";\n}, 5);"},{"id":"nextjs","label":"Next.js","language":"typescript","filename":"app/page.tsx","code":"// Next.js App Router — Metadata API\nimport type { Metadata } from 'next';\n\nexport const metadata: Metadata = {\n title: \"StackHarden\",\n description: \"Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\",\n openGraph: {\n title: \"StackHarden\",\n description: \"Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\",\n url: \"https://stackharden.com\",\n images: [\"https://yoursite.com/og-image.jpg\"],\n type: 'website',\n },\n};"}] }'>
Markdown-Tokens: 115
Practical infrastructure hardening for people who run real systems: SaaS builds, self-hosted apps, WordPress stacks, email servers, and VPS baselines. Every guide explains the security rationale and, where relevant, the NIS2 / ISO 27001 control it maps to — not just copy-paste commands.

Start with the [guides](https://stackharden.com/guides/), grab a [script](https://stackharden.com/scripts/), or run an [infrastructure checklist](https://stackharden.com/checklist/).
StackHarden

Practical infrastructure hardening for people who run real systems: SaaS builds, self-hosted apps, WordPress stacks, email servers, and VPS baselines. Every guide explains the security rationale and, where relevant, the NIS2 / ISO 27001 control it maps to — not just copy-paste commands.

Start with the [guides](https://stackharden.com/guides/), grab a [script](https://stackharden.com/scripts/), or run an [infrastructure checklist](https://stackharden.com/checklist/).

## Browse by series[All series →](https://stackharden.com/series/)

[### Data-tier hardening

Databases, caches, backups, and the logs they produce — PostgreSQL and Redis posture, backup and recovery patterns, log minimisation. The data layer of a production service and the operational trail …

7 pieces · Open series →](https://stackharden.com/series/data-tier-hardening/)[### AI security

Strategic and architectural pieces on deploying agentic AI in security contexts — control posture, reference architecture, threat modelling, prompt-injection defences, audit-trail design, with a …

3 pieces · Open series →](https://stackharden.com/series/ai-security/)[### Edge hardening

Nginx at the public boundary — modern TLS configuration, rate-limiting and fail2ban patterns, and the operational defaults that keep the edge from becoming the weak link.

3 pieces · Open series →](https://stackharden.com/series/edge-hardening/)[### Host hardening

Ubuntu and RHEL / AlmaLinux baselines, the SSH hardening they both depend on, and the system-state controls that turn a fresh provider image into a defensible internet-facing host.

3 pieces · Open series →](https://stackharden.com/series/host-hardening/)[### Compliance

NIS2, ISO 27001, and GDPR translated into the configurations, controls, and evidence an auditor will actually look at — with a short closing position on what is governance work that does not appear on …

2 pieces · Open series →](https://stackharden.com/series/compliance/)[### Launch readiness

Pre-launch verification — the 'have we actually done it' layer for new systems about to take production traffic. Currently anchored by the pre-launch VPS security checklist.

2 pieces · Open series →](https://stackharden.com/series/launch-readiness/)[### AI readiness

Making sites and services consumable by AI agents — Link headers, content signals, schema.org markup, and the emerging conventions that determine whether AI assistants can identify, ingest, and …

1 piece · Open series →](https://stackharden.com/series/ai-readiness/)[### App deployment

Practical deployment recipes for application stacks on a hardened VPS — gunicorn or equivalent under systemd, Caddy or Nginx in front, and the real-world integration bumps that only show up the first …

1 piece · Open series →](https://stackharden.com/series/app-deployment/)

## Latest checklists[All checklists →](https://stackharden.com/checklist/)

[### NIS2 Technical Readiness Checklist

A technical readiness checklist for the NIS2 risk-management measures that have a real surface on the box — hardening, patching, …

Open checklist →](https://stackharden.com/checklist/nis2-readiness/)[### Agentic AI Deployment Readiness Checklist

A design-review checklist for deploying an agentic AI system in a security context — architecture, threat model coverage, prompt-injection …

Open checklist →](https://stackharden.com/checklist/agentic-ai-deployment/)[### WordPress Hosting Security Checklist

A pre-launch and ongoing security checklist for agencies hosting WordPress sites — server isolation, wp-config flags, admin posture, plugin …

Open checklist →](https://stackharden.com/checklist/wordpress-security/)

## Latest guides[All guides →](https://stackharden.com/guides/)

[### Making a Static Site Agent-Ready: What I Changed, What I Didn't, and Why

A practitioner's walk-through of the agent-readiness signals that matter for a static content site on Hugo + Cloudflare Pages — Link headers, Content-Signal, the …

Read guide →](https://stackharden.com/guides/agent-readiness-static-site/)[### Building Agentic AI for Security: Architecture, Threat Modelling, and the Audit Trail You Will Actually Need

Reference architecture for an agentic AI security pipeline — STRIDE threat modelling, practical prompt-injection defences, and the audit trail your auditor will actually ask for.

Read guide →](https://stackharden.com/guides/agentic-ai-pipeline-reference/)[### Agentic AI in Security: Why Control Posture Matters More Than Capability

How to govern agentic AI in a security environment — human-in-the-loop vs human-on-the-loop, least privilege for autonomous systems, the prompt-injection attack surface, and the …

Read guide →](https://stackharden.com/guides/agentic-ai-control-posture/)[### Deploying a Flask Tools Site on a Hardened VPS Behind Caddy

A faithful walkthrough of deploying a small Flask app to a single VPS — system user, gunicorn over a unix socket, systemd with the hardening directives this site recommends, Caddy …

Read guide →](https://stackharden.com/guides/deploying-flask-on-caddy/)[### Log Minimisation Recipes — Nginx, Apache, PostgreSQL, Applications

Practical log\_format and configuration recipes that capture what you need for debugging and security without retaining what you don't. The application-layer companion to the …

Read guide →](https://stackharden.com/guides/log-minimisation-recipes/)[### Nginx Rate Limiting — limit\_req, limit\_conn, and fail2ban

Nginx rate limiting that actually protects authentication endpoints, signup flows, and expensive APIs — without locking out legitimate traffic. With sensible defaults and the …

Read guide →](https://stackharden.com/guides/nginx-ratelimit/)[### WordPress Hardening for Agencies

A WordPress hardening baseline aimed at agency hosting — server posture, wp-config flags, admin protection, plugin discipline, and the items that turn a CMS into a compliance …

Read guide →](https://stackharden.com/guides/wordpress-hardening/)[### Hardened RHEL / AlmaLinux VPS Baseline

A pragmatic RHEL 9 / AlmaLinux 9 hardening baseline — first-boot user setup, SSH, firewalld, automatic patching, SELinux verification, audit logging, and the order to apply them …

Read guide →](https://stackharden.com/guides/rhel-baseline/)[### Hardened Ubuntu VPS Baseline

A pragmatic Ubuntu 24.04 LTS hardening baseline — first-boot user setup, SSH, firewall, automatic security updates, audit logging, and time-sync — applied in the right order.

Read guide →](https://stackharden.com/guides/ubuntu-baseline/)[### Encrypted Backups with restic

An opinionated restic backup baseline — repository design, passphrase survival, retention, off-site targets, verification, and restoration drills. The compliance-friendly default …

Read guide →](https://stackharden.com/guides/encrypted-backups-restic/)

Emails when a new guide, script, or tool ships — roughly weekly, sometimes every few days. Double opt-in, no tracking.

[Subscribe →](https://stackharden.com/subscribe/)

[](https://stackharden.com/#top "Go to Top (Alt + G)")

[Subscribe](https://stackharden.com/subscribe/)  ·  [Write for us](https://stackharden.com/contribute/)  ·  [Privacy](https://stackharden.com/privacy/)  ·  [Cookies](https://stackharden.com/cookies/)  ·  [Disclaimer](https://stackharden.com/disclaimer/)

Operated by Data Vision IT Consulting Limited, Kilbride, Wicklow, Ireland.

Laden Sie diese Datei als /index.md auf Ihren Server hoch, damit KI-Agenten auf eine saubere Version Ihrer Seite zugreifen können. Sie können auch die Accept: text/markdown-Inhaltsverhandlung konfigurieren, um sie automatisch auszuliefern.

Generierte llms.txt für diese einzelne Seite

llms.txt herunterladen
# StackHarden

> Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.

## Main
- [StackHarden](https://stackharden.com): Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context ba…
- [About](https://stackharden.com/about/)
- [StackHarden](https://stackharden.com/)
- [Guides](https://stackharden.com/guides/)
- [Scripts](https://stackharden.com/scripts/)
- [Checklists](https://stackharden.com/checklist/)
- [Learner](https://stackharden.com/learner/)
- [Series](https://stackharden.com/series/)
- [Next  »](https://stackharden.com/page/2/)

Vollständige llms.txt erfordert eine domainweite Analyse (kommt bald)

Laden Sie diese Datei als https://stackharden.com/llms.txt im Stammverzeichnis Ihrer Domain hoch. KI-Agenten wie ChatGPT, Claude und Perplexity prüfen diese Datei, um Ihre Website-Struktur zu verstehen.

Semantisches HTML

Verwendet article- oder main-Element (100/100)

Has <main>

Korrekte Überschriftenhierarchie (70/100)

no <h1>

Verwendet semantische HTML-Elemente (100/100)

10 semantic elements, 11 divs (ratio: 48%)

Aussagekräftige Bild-Alt-Texte (100/100)

No images found

Geringe div-Verschachtelungstiefe (100/100)

Avg div depth: 0.1, max: 1

Inhaltseffizienz

Gutes Token-Reduktionsverhältnis (100/100)

98% token reduction (HTML→Markdown)

Gutes Inhalt-zu-Rausch-Verhältnis (0/100)

Content ratio: 1.6% (364 content chars / 22163 HTML bytes)

Minimale Inline-Styles (100/100)

0/216 elements with inline styles (0.0%)

Angemessenes Seitengewicht (100/100)

HTML size: 22KB

KI-Auffindbarkeit

Hat llms.txt-Datei (0/100)

No llms.txt found

Hat robots.txt-Datei (100/100)

robots.txt exists

robots.txt erlaubt KI-Bots (100/100)

All major AI bots allowed

Hat sitemap.xml (100/100)

Sitemap found

Markdown for Agents Unterstützung (0/100)
&#10007; Accept: text/markdown &#10007; .md URL &#10007; <link> tag &#10007; Link header
Hat Content-Signal (robots.txt oder HTTP-Header) (60/100)
&#10003; robots.txt &#10007; HTTP header &#10007; Policy

Strukturierte Daten

Hat Schema.org / JSON-LD (100/100)

JSON-LD found: Organization

Hat Open-Graph-Tags (67/100)

2/3 OG tags present

Hat Meta-Beschreibung (100/100)

Meta description: 126 chars

Hat kanonische URL (100/100)

Canonical URL present

Hat lang-Attribut (100/100)

lang="en"

Zugänglichkeit

Inhalt ohne JavaScript verfügbar (100/100)

Content available without JavaScript

Angemessene Seitengröße (100/100)

Page size: 22KB

Inhalt erscheint früh im HTML (75/100)

Main content starts at 30% of HTML

{
  "url": "https://stackharden.com",
  "timestamp": 1779829477776,
  "fetch": {
    "mode": "simple",
    "timeMs": 112,
    "htmlSizeBytes": 22163,
    "supportsMarkdown": false,
    "markdownAgents": {
      "contentNegotiation": false,
      "mdUrl": {
        "found": false,
        "url": null
      },
      "linkTag": {
        "found": false,
        "url": null
      },
      "linkHeader": {
        "found": false,
        "url": null
      },
      "responseHeaders": {
        "contentSignal": null,
        "xMarkdownTokens": null,
        "vary": null
      },
      "frontmatter": {
        "present": false,
        "fields": [],
        "level": "none"
      },
      "level": "none"
    },
    "statusCode": 200
  },
  "extraction": {
    "title": "StackHarden",
    "excerpt": "Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.",
    "byline": null,
    "siteName": "StackHarden",
    "lang": "en",
    "contentLength": 364,
    "metadata": {
      "description": "Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.",
      "ogTitle": "StackHarden",
      "ogDescription": "Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.",
      "ogImage": null,
      "ogType": "website",
      "canonical": "https://stackharden.com/",
      "lang": "en",
      "schemas": [
        {
          "@context": "https://schema.org",
          "@type": "Organization",
          "name": "StackHarden",
          "url": "https://stackharden.com/",
          "description": "Hardened infrastructure guides, scripts and tools for sysadmins and agencies",
          "logo": "https://stackharden.com/favicon.ico",
          "sameAs": []
        }
      ],
      "robotsMeta": "index, follow",
      "author": null,
      "generator": "Hugo 0.147.0",
      "markdownAlternateHref": null
    }
  },
  "markdown": "Practical infrastructure hardening for people who run real systems: SaaS builds, self-hosted apps, WordPress stacks, email servers, and VPS baselines. Every guide explains the security rationale and, where relevant, the NIS2 / ISO 27001 control it maps to — not just copy-paste commands.\n\nStart with the [guides](https://stackharden.com/guides/), grab a [script](https://stackharden.com/scripts/), or run an [infrastructure checklist](https://stackharden.com/checklist/).\n",
  "fullPageMarkdown": "StackHarden\n\nPractical infrastructure hardening for people who run real systems: SaaS builds, self-hosted apps, WordPress stacks, email servers, and VPS baselines. Every guide explains the security rationale and, where relevant, the NIS2 / ISO 27001 control it maps to — not just copy-paste commands.\n\nStart with the [guides](https://stackharden.com/guides/), grab a [script](https://stackharden.com/scripts/), or run an [infrastructure checklist](https://stackharden.com/checklist/).\n\n## Browse by series[All series →](https://stackharden.com/series/)\n\n[### Data-tier hardening\n\nDatabases, caches, backups, and the logs they produce — PostgreSQL and Redis posture, backup and recovery patterns, log minimisation. The data layer of a production service and the operational trail …\n\n7 pieces · Open series →](https://stackharden.com/series/data-tier-hardening/)[### AI security\n\nStrategic and architectural pieces on deploying agentic AI in security contexts — control posture, reference architecture, threat modelling, prompt-injection defences, audit-trail design, with a …\n\n3 pieces · Open series →](https://stackharden.com/series/ai-security/)[### Edge hardening\n\nNginx at the public boundary — modern TLS configuration, rate-limiting and fail2ban patterns, and the operational defaults that keep the edge from becoming the weak link.\n\n3 pieces · Open series →](https://stackharden.com/series/edge-hardening/)[### Host hardening\n\nUbuntu and RHEL / AlmaLinux baselines, the SSH hardening they both depend on, and the system-state controls that turn a fresh provider image into a defensible internet-facing host.\n\n3 pieces · Open series →](https://stackharden.com/series/host-hardening/)[### Compliance\n\nNIS2, ISO 27001, and GDPR translated into the configurations, controls, and evidence an auditor will actually look at — with a short closing position on what is governance work that does not appear on …\n\n2 pieces · Open series →](https://stackharden.com/series/compliance/)[### Launch readiness\n\nPre-launch verification — the 'have we actually done it' layer for new systems about to take production traffic. Currently anchored by the pre-launch VPS security checklist.\n\n2 pieces · Open series →](https://stackharden.com/series/launch-readiness/)[### AI readiness\n\nMaking sites and services consumable by AI agents — Link headers, content signals, schema.org markup, and the emerging conventions that determine whether AI assistants can identify, ingest, and …\n\n1 piece · Open series →](https://stackharden.com/series/ai-readiness/)[### App deployment\n\nPractical deployment recipes for application stacks on a hardened VPS — gunicorn or equivalent under systemd, Caddy or Nginx in front, and the real-world integration bumps that only show up the first …\n\n1 piece · Open series →](https://stackharden.com/series/app-deployment/)\n\n## Latest checklists[All checklists →](https://stackharden.com/checklist/)\n\n[### NIS2 Technical Readiness Checklist\n\nA technical readiness checklist for the NIS2 risk-management measures that have a real surface on the box — hardening, patching, …\n\nOpen checklist →](https://stackharden.com/checklist/nis2-readiness/)[### Agentic AI Deployment Readiness Checklist\n\nA design-review checklist for deploying an agentic AI system in a security context — architecture, threat model coverage, prompt-injection …\n\nOpen checklist →](https://stackharden.com/checklist/agentic-ai-deployment/)[### WordPress Hosting Security Checklist\n\nA pre-launch and ongoing security checklist for agencies hosting WordPress sites — server isolation, wp-config flags, admin posture, plugin …\n\nOpen checklist →](https://stackharden.com/checklist/wordpress-security/)\n\n## Latest guides[All guides →](https://stackharden.com/guides/)\n\n[### Making a Static Site Agent-Ready: What I Changed, What I Didn't, and Why\n\nA practitioner's walk-through of the agent-readiness signals that matter for a static content site on Hugo + Cloudflare Pages — Link headers, Content-Signal, the …\n\nRead guide →](https://stackharden.com/guides/agent-readiness-static-site/)[### Building Agentic AI for Security: Architecture, Threat Modelling, and the Audit Trail You Will Actually Need\n\nReference architecture for an agentic AI security pipeline — STRIDE threat modelling, practical prompt-injection defences, and the audit trail your auditor will actually ask for.\n\nRead guide →](https://stackharden.com/guides/agentic-ai-pipeline-reference/)[### Agentic AI in Security: Why Control Posture Matters More Than Capability\n\nHow to govern agentic AI in a security environment — human-in-the-loop vs human-on-the-loop, least privilege for autonomous systems, the prompt-injection attack surface, and the …\n\nRead guide →](https://stackharden.com/guides/agentic-ai-control-posture/)[### Deploying a Flask Tools Site on a Hardened VPS Behind Caddy\n\nA faithful walkthrough of deploying a small Flask app to a single VPS — system user, gunicorn over a unix socket, systemd with the hardening directives this site recommends, Caddy …\n\nRead guide →](https://stackharden.com/guides/deploying-flask-on-caddy/)[### Log Minimisation Recipes — Nginx, Apache, PostgreSQL, Applications\n\nPractical log\\_format and configuration recipes that capture what you need for debugging and security without retaining what you don't. The application-layer companion to the …\n\nRead guide →](https://stackharden.com/guides/log-minimisation-recipes/)[### Nginx Rate Limiting — limit\\_req, limit\\_conn, and fail2ban\n\nNginx rate limiting that actually protects authentication endpoints, signup flows, and expensive APIs — without locking out legitimate traffic. With sensible defaults and the …\n\nRead guide →](https://stackharden.com/guides/nginx-ratelimit/)[### WordPress Hardening for Agencies\n\nA WordPress hardening baseline aimed at agency hosting — server posture, wp-config flags, admin protection, plugin discipline, and the items that turn a CMS into a compliance …\n\nRead guide →](https://stackharden.com/guides/wordpress-hardening/)[### Hardened RHEL / AlmaLinux VPS Baseline\n\nA pragmatic RHEL 9 / AlmaLinux 9 hardening baseline — first-boot user setup, SSH, firewalld, automatic patching, SELinux verification, audit logging, and the order to apply them …\n\nRead guide →](https://stackharden.com/guides/rhel-baseline/)[### Hardened Ubuntu VPS Baseline\n\nA pragmatic Ubuntu 24.04 LTS hardening baseline — first-boot user setup, SSH, firewall, automatic security updates, audit logging, and time-sync — applied in the right order.\n\nRead guide →](https://stackharden.com/guides/ubuntu-baseline/)[### Encrypted Backups with restic\n\nAn opinionated restic backup baseline — repository design, passphrase survival, retention, off-site targets, verification, and restoration drills. The compliance-friendly default …\n\nRead guide →](https://stackharden.com/guides/encrypted-backups-restic/)\n\nEmails when a new guide, script, or tool ships — roughly weekly, sometimes every few days. Double opt-in, no tracking.\n\n[Subscribe →](https://stackharden.com/subscribe/)\n\n[](https://stackharden.com/#top \"Go to Top (Alt + G)\")\n\n[Subscribe](https://stackharden.com/subscribe/)  ·  [Write for us](https://stackharden.com/contribute/)  ·  [Privacy](https://stackharden.com/privacy/)  ·  [Cookies](https://stackharden.com/cookies/)  ·  [Disclaimer](https://stackharden.com/disclaimer/)\n\nOperated by Data Vision IT Consulting Limited, Kilbride, Wicklow, Ireland.\n",
  "markdownStats": {
    "images": 0,
    "links": 3,
    "tables": 0,
    "codeBlocks": 0,
    "headings": 0
  },
  "tokens": {
    "htmlTokens": 5735,
    "markdownTokens": 115,
    "reduction": 5620,
    "reductionPercent": 98
  },
  "score": {
    "score": 76,
    "grade": "B",
    "dimensions": {
      "semanticHtml": {
        "score": 93,
        "weight": 20,
        "grade": "A",
        "checks": {
          "uses_article_or_main": {
            "score": 100,
            "weight": 20,
            "details": "Has <main>"
          },
          "proper_heading_hierarchy": {
            "score": 70,
            "weight": 25,
            "details": "no <h1>"
          },
          "semantic_elements": {
            "score": 100,
            "weight": 20,
            "details": "10 semantic elements, 11 divs (ratio: 48%)"
          },
          "meaningful_alt_texts": {
            "score": 100,
            "weight": 15,
            "details": "No images found"
          },
          "low_div_nesting": {
            "score": 100,
            "weight": 20,
            "details": "Avg div depth: 0.1, max: 1"
          }
        }
      },
      "contentEfficiency": {
        "score": 70,
        "weight": 25,
        "grade": "C",
        "checks": {
          "token_reduction_ratio": {
            "score": 100,
            "weight": 40,
            "details": "98% token reduction (HTML→Markdown)"
          },
          "content_to_noise_ratio": {
            "score": 0,
            "weight": 30,
            "details": "Content ratio: 1.6% (364 content chars / 22163 HTML bytes)"
          },
          "minimal_inline_styles": {
            "score": 100,
            "weight": 15,
            "details": "0/216 elements with inline styles (0.0%)"
          },
          "reasonable_page_weight": {
            "score": 100,
            "weight": 15,
            "details": "HTML size: 22KB"
          }
        }
      },
      "aiDiscoverability": {
        "score": 47,
        "weight": 25,
        "grade": "D",
        "checks": {
          "has_llms_txt": {
            "score": 0,
            "weight": 20,
            "details": "No llms.txt found"
          },
          "has_robots_txt": {
            "score": 100,
            "weight": 10,
            "details": "robots.txt exists"
          },
          "robots_allows_ai_bots": {
            "score": 100,
            "weight": 15,
            "details": "All major AI bots allowed"
          },
          "has_sitemap": {
            "score": 100,
            "weight": 10,
            "details": "Sitemap found"
          },
          "supports_markdown_negotiation": {
            "score": 0,
            "weight": 25,
            "details": "No Markdown for Agents support detected"
          },
          "has_content_signals": {
            "score": 60,
            "weight": 20,
            "details": "robots.txt: search=yes, ai-input=yes, ai-train=no"
          }
        }
      },
      "structuredData": {
        "score": 92,
        "weight": 15,
        "grade": "A",
        "checks": {
          "has_schema_org": {
            "score": 100,
            "weight": 30,
            "details": "JSON-LD found: Organization"
          },
          "has_open_graph": {
            "score": 67,
            "weight": 25,
            "details": "2/3 OG tags present"
          },
          "has_meta_description": {
            "score": 100,
            "weight": 20,
            "details": "Meta description: 126 chars"
          },
          "has_canonical_url": {
            "score": 100,
            "weight": 15,
            "details": "Canonical URL present"
          },
          "has_lang_attribute": {
            "score": 100,
            "weight": 10,
            "details": "lang=\"en\""
          }
        }
      },
      "accessibility": {
        "score": 93,
        "weight": 15,
        "grade": "A",
        "checks": {
          "content_without_js": {
            "score": 100,
            "weight": 40,
            "details": "Content available without JavaScript"
          },
          "reasonable_page_size": {
            "score": 100,
            "weight": 30,
            "details": "Page size: 22KB"
          },
          "fast_content_position": {
            "score": 75,
            "weight": 30,
            "details": "Main content starts at 30% of HTML"
          }
        }
      }
    }
  },
  "recommendations": [
    {
      "id": "add_llms_txt",
      "priority": "critical",
      "category": "aiDiscoverability",
      "titleKey": "rec.add_llms_txt.title",
      "descriptionKey": "rec.add_llms_txt.description",
      "howToKey": "rec.add_llms_txt.howto",
      "effort": "quick-win",
      "estimatedImpact": 10,
      "checkScore": 0,
      "checkDetails": "No llms.txt found"
    },
    {
      "id": "improve_content_ratio",
      "priority": "critical",
      "category": "contentEfficiency",
      "titleKey": "rec.improve_content_ratio.title",
      "descriptionKey": "rec.improve_content_ratio.description",
      "howToKey": "rec.improve_content_ratio.howto",
      "effort": "moderate",
      "estimatedImpact": 6,
      "checkScore": 0,
      "checkDetails": "Content ratio: 1.6% (364 content chars / 22163 HTML bytes)"
    },
    {
      "id": "add_markdown_negotiation",
      "priority": "critical",
      "category": "aiDiscoverability",
      "titleKey": "rec.add_markdown_negotiation.title",
      "descriptionKey": "rec.add_markdown_negotiation.description",
      "howToKey": "rec.add_markdown_negotiation.howto",
      "effort": "significant",
      "estimatedImpact": 6,
      "checkScore": 0,
      "checkDetails": "No Markdown for Agents support detected"
    },
    {
      "id": "fix_heading_hierarchy",
      "priority": "medium",
      "category": "semanticHtml",
      "titleKey": "rec.fix_heading_hierarchy.title",
      "descriptionKey": "rec.fix_heading_hierarchy.description",
      "howToKey": "rec.fix_heading_hierarchy.howto",
      "effort": "quick-win",
      "estimatedImpact": 6,
      "checkScore": 70,
      "checkDetails": "no <h1>"
    },
    {
      "id": "add_open_graph",
      "priority": "medium",
      "category": "structuredData",
      "titleKey": "rec.add_open_graph.title",
      "descriptionKey": "rec.add_open_graph.description",
      "howToKey": "rec.add_open_graph.howto",
      "effort": "quick-win",
      "estimatedImpact": 4,
      "checkScore": 67,
      "checkDetails": "2/3 OG tags present"
    }
  ],
  "llmsTxtPreview": "# StackHarden\n\n> Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\n\n## Main\n- [StackHarden](https://stackharden.com): Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context ba…\n- [About](https://stackharden.com/about/)\n- [StackHarden](https://stackharden.com/)\n- [Guides](https://stackharden.com/guides/)\n- [Scripts](https://stackharden.com/scripts/)\n- [Checklists](https://stackharden.com/checklist/)\n- [Learner](https://stackharden.com/learner/)\n- [Series](https://stackharden.com/series/)\n- [Next  »](https://stackharden.com/page/2/)\n\n",
  "llmsTxtExisting": null,
  "emergingProtocols": {
    "oauthDiscovery": {
      "exists": false,
      "url": "https://stackharden.com/.well-known/oauth-authorization-server"
    },
    "mcpServerCard": {
      "exists": false,
      "url": "https://stackharden.com/.well-known/mcp.json"
    },
    "a2aAgentCard": {
      "exists": false,
      "url": "https://stackharden.com/.well-known/agent.json"
    },
    "count": 0
  },
  "snippets": [
    {
      "id": "add_llms_txt",
      "title": "Create /llms.txt",
      "description": "Upload this file to your web root. It tells AI agents what your site is about and which pages matter.",
      "language": "markdown",
      "code": "# StackHarden\n\n> Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\n\n## Main\n- [StackHarden](https://stackharden.com): Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context ba…\n- [About](https://stackharden.com/about/)\n- [StackHarden](https://stackharden.com/)\n- [Guides](https://stackharden.com/guides/)\n- [Scripts](https://stackharden.com/scripts/)\n- [Checklists](https://stackharden.com/checklist/)\n- [Learner](https://stackharden.com/learner/)\n- [Series](https://stackharden.com/series/)\n- [Next  »](https://stackharden.com/page/2/)\n\n",
      "filename": "/llms.txt"
    },
    {
      "id": "fix_heading_hierarchy",
      "title": "Fix heading hierarchy",
      "description": "Your page has no <h1>. Every page needs exactly one <h1> as the main heading. Add it inside your <main> or <article>.",
      "language": "html",
      "code": "<h1>StackHarden</h1>",
      "filename": "<main> or <article>"
    },
    {
      "id": "add_open_graph",
      "title": "Add missing Open Graph tags",
      "description": "Open Graph tags control how your page looks when shared on social media and how AI platforms preview your URL in answers.",
      "language": "html",
      "code": "<meta property=\"og:image\" content=\"https://yoursite.com/og-image.jpg\">\n<meta property=\"og:url\" content=\"https://stackharden.com\">\n<meta property=\"og:type\" content=\"website\">",
      "filename": "<head>",
      "stacks": [
        {
          "id": "html",
          "label": "HTML <head>",
          "language": "html",
          "filename": "<head>",
          "code": "<meta property=\"og:image\" content=\"https://yoursite.com/og-image.jpg\">\n<meta property=\"og:url\" content=\"https://stackharden.com\">\n<meta property=\"og:type\" content=\"website\">"
        },
        {
          "id": "wordpress",
          "label": "WordPress",
          "language": "php",
          "filename": "functions.php",
          "code": "<?php\n// Quick Open Graph tags without a plugin (skip if Yoast / Rank Math is active)\nadd_action('wp_head', function () {\n    if (!is_singular()) return;\n    $post = get_queried_object();\n    $title = get_the_title($post);\n    $desc  = get_the_excerpt($post) ?: wp_trim_words(strip_tags($post->post_content), 30);\n    $image = get_the_post_thumbnail_url($post, 'large') ?: 'https://yoursite.com/og-image.jpg';\n    $url   = get_permalink($post);\n    printf('<meta property=\"og:title\" content=\"%s\">' . \"\\n\", esc_attr($title));\n    printf('<meta property=\"og:description\" content=\"%s\">' . \"\\n\", esc_attr($desc));\n    printf('<meta property=\"og:image\" content=\"%s\">' . \"\\n\", esc_url($image));\n    printf('<meta property=\"og:url\" content=\"%s\">' . \"\\n\", esc_url($url));\n    echo '<meta property=\"og:type\" content=\"article\">' . \"\\n\";\n}, 5);"
        },
        {
          "id": "nextjs",
          "label": "Next.js",
          "language": "typescript",
          "filename": "app/page.tsx",
          "code": "// Next.js App Router — Metadata API\nimport type { Metadata } from 'next';\n\nexport const metadata: Metadata = {\n  title: \"StackHarden\",\n  description: \"Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\",\n  openGraph: {\n    title: \"StackHarden\",\n    description: \"Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\",\n    url: \"https://stackharden.com\",\n    images: [\"https://yoursite.com/og-image.jpg\"],\n    type: 'website',\n  },\n};"
        }
      ]
    },
    {
      "id": "add_markdown_negotiation",
      "title": "Support Markdown for Agents",
      "description": "Let AI agents request a clean Markdown version of any page via content negotiation, .md alternate URLs, link tags or Link headers.",
      "language": "html",
      "code": "<!-- Mechanism 3: link tag advertising the .md alternate -->\n<link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">",
      "filename": "<head>",
      "stacks": [
        {
          "id": "html",
          "label": "HTML <head>",
          "language": "html",
          "filename": "<head>",
          "code": "<!-- Mechanism 3: link tag advertising the .md alternate -->\n<link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">"
        },
        {
          "id": "express",
          "label": "Express",
          "language": "javascript",
          "filename": "server.js",
          "code": "// Mechanisms 1 + 4: content negotiation + Link header\napp.get('/page', (req, res) => {\n  res.setHeader('Vary', 'Accept');\n  res.setHeader('Link', '</page.md>; rel=\"alternate\"; type=\"text/markdown\"');\n  if ((req.headers.accept || '').includes('text/markdown')) {\n    res.type('text/markdown; charset=utf-8');\n    return res.send(renderMarkdown('page'));\n  }\n  res.render('page');\n});"
        },
        {
          "id": "fastify",
          "label": "Fastify",
          "language": "javascript",
          "filename": "server.js",
          "code": "// Mechanisms 1 + 4: content negotiation + Link header\nfastify.get('/page', async (req, reply) => {\n  reply.header('Vary', 'Accept');\n  reply.header('Link', '</page.md>; rel=\"alternate\"; type=\"text/markdown\"');\n  if ((req.headers.accept || '').includes('text/markdown')) {\n    return reply.type('text/markdown; charset=utf-8').send(renderMarkdown('page'));\n  }\n  return reply.view('/page.ejs');\n});"
        },
        {
          "id": "nextjs",
          "label": "Next.js",
          "language": "typescript",
          "filename": "app/page/route.ts",
          "code": "// Next.js App Router — Route Handler returning Markdown\nimport { NextRequest } from 'next/server';\nimport { renderMarkdown } from '@/lib/md';\nexport async function GET(req: NextRequest) {\n  const accept = req.headers.get('accept') || '';\n  if (accept.includes('text/markdown')) {\n    return new Response(await renderMarkdown('page'), {\n      headers: {\n        'Content-Type': 'text/markdown; charset=utf-8',\n        'Vary': 'Accept',\n      },\n    });\n  }\n  // Fall through to the page component\n  return new Response(null, { status: 404 });\n}"
        },
        {
          "id": "wordpress",
          "label": "WordPress",
          "language": "php",
          "filename": "functions.php",
          "code": "<?php\n// Mechanism 1: respond to Accept: text/markdown on the same URL\nadd_action('template_redirect', function () {\n    if (!is_singular()) return;\n    $accept = $_SERVER['HTTP_ACCEPT'] ?? '';\n    if (strpos($accept, 'text/markdown') === false) return;\n    header('Content-Type: text/markdown; charset=utf-8');\n    header('Vary: Accept');\n    $post = get_queried_object();\n    echo \"# \" . get_the_title($post) . \"\\n\\n\";\n    echo wp_strip_all_tags(apply_filters('the_content', $post->post_content));\n    exit;\n});"
        },
        {
          "id": "static",
          "label": "Hugo / Jekyll / Astro",
          "language": "txt",
          "filename": "static/page.md",
          "code": "# Mechanism 2: serve .md alongside .html\n# Hugo: place page.md in /static/ — built unchanged\n# Jekyll: drop page.md in /assets/ — copied as-is\n# Astro: src/pages/page.md.ts that exports a GET returning markdown\n\n# Then advertise with mechanism 3 in <head>:\n#   <link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">"
        }
      ]
    }
  ]
}

Nutzen Sie unsere API, um dies programmatisch abzurufen (kommt bald)

Dieses JSON ist für den internen Gebrauch bestimmt — im Gegensatz zu den Markdown- und llms.txt-Dateien soll es nicht auf Ihre Website hochgeladen werden. Speichern Sie es als Ausgangswert, um Ihren Score im Zeitverlauf zu verfolgen, teilen Sie es mit Ihrem Entwicklerteam oder integrieren Sie es in Ihre CI/CD-Pipeline.

Teilen Sie Ihre Ergebnisse

Twitter LinkedIn

Badge einbetten

Fügen Sie dieses Badge zu Ihrer Website hinzu. Es aktualisiert sich automatisch, wenn sich Ihr KI-Bereitschafts-Score ändert.

AgentReady.md score for stackharden.com
Script Empfohlen
<script src="https://agentready.md/badge.js" data-id="ae0ab0c0-3510-4b0a-acb3-d0a80078b1bd" data-domain="stackharden.com"></script>
Markdown
[![AgentReady.md score for stackharden.com](https://agentready.md/badge/stackharden.com.svg)](https://agentready.md/de/r/ae0ab0c0-3510-4b0a-acb3-d0a80078b1bd)

Demnächst: Vollständige Domain-Analyse

Crawlen Sie Ihre gesamte Domain, generieren Sie llms.txt und überwachen Sie Ihren KI-Bereitschaftswert im Zeitverlauf. Tragen Sie sich in die Warteliste ein.

Sie stehen auf der Liste! Wir benachrichtigen Sie, sobald es verfügbar ist.