https://carrero.es

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  "markdown": "Último Artículo\n\n## [La IA no está destruyendo empleo: está cambiando el precio del trabajo](https://carrero.es/la-ia-no-esta-destruyendo-empleo-esta-cambiando-el-precio-del-trabajo/)\n\n9 de junio de 2026\n\nDurante los últimos meses he leído demasiadas veces que la inteligencia artificial va a destruir el empleo sofisticado. Abogados, programadores, analistas, diseñadores, redactores, consultores, financieros, administradores de sistemas, … todos …\n\n[Leer más](https://carrero.es/la-ia-no-esta-destruyendo-empleo-esta-cambiando-el-precio-del-trabajo/)\n",
  "fullPageMarkdown": "Carrero.es es el sitio personal de David Carrero Fernández-Baillo                                            [Saltar al contenido](https://carrero.es/#content \"Saltar al contenido\")\n\nÚltimo Artículo\n\n## [La IA no está destruyendo empleo: está cambiando el precio del trabajo](https://carrero.es/la-ia-no-esta-destruyendo-empleo-esta-cambiando-el-precio-del-trabajo/)\n\n9 de junio de 2026\n\nDurante los últimos meses he leído demasiadas veces que la inteligencia artificial va a destruir el empleo sofisticado. Abogados, programadores, analistas, diseñadores, redactores, consultores, financieros, administradores de sistemas, … todos …\n\n[Leer más](https://carrero.es/la-ia-no-esta-destruyendo-empleo-esta-cambiando-el-precio-del-trabajo/)\n\n### [Vivimos dentro de dos inflaciones distintas](https://carrero.es/vivimos-dentro-de-dos-inflaciones-distintas/)\n\n2 de junio de 2026\n\n[Ver artículo](https://carrero.es/vivimos-dentro-de-dos-inflaciones-distintas/)\n\n### [Amazon no está creciendo: está ocupando capas enteras de la economía](https://carrero.es/amazon-no-esta-creciendo-esta-ocupando-capas-enteras-de-la-economia/)\n\n26 de mayo de 2026\n\n[Ver artículo](https://carrero.es/amazon-no-esta-creciendo-esta-ocupando-capas-enteras-de-la-economia/)\n\n### [Open source, IA y confianza: cuando el código abierto no basta](https://carrero.es/open-source-ia-y-confianza-cuando-el-codigo-abierto-no-basta/)\n\n22 de mayo de 2026\n\n[Ver artículo](https://carrero.es/open-source-ia-y-confianza-cuando-el-codigo-abierto-no-basta/)\n\n### [DirtyFrag, Copy Fail y el aviso que Linux no puede ignorar](https://carrero.es/dirtyfrag-copy-fail-aviso-que-linux-no-puede-ignorar/)\n\n19 de mayo de 2026\n\n[Ver artículo](https://carrero.es/dirtyfrag-copy-fail-aviso-que-linux-no-puede-ignorar/)\n\n### [Bloquear IPs por el fútbol es una barbaridad técnica que ya afecta a todos](https://carrero.es/bloquear-ips-por-el-futbol-es-una-barbaridad-tecnica-que-ya-afecta-a-todos/)\n\n16 de mayo de 2026\n\n[Ver artículo](https://carrero.es/bloquear-ips-por-el-futbol-es-una-barbaridad-tecnica-que-ya-afecta-a-todos/)\n\n### [Copy Fail y la falsa sensación de seguridad en nuestros sistemas](https://carrero.es/copy-fail-falsa-sensacion-seguridad-nuestros-sistemas/)\n\n12 de mayo de 2026\n\n[Ver artículo](https://carrero.es/copy-fail-falsa-sensacion-seguridad-nuestros-sistemas/)\n\n1[2](https://carrero.es/?query-22506824-page=2)[3](https://carrero.es/?query-22506824-page=3)…[521](https://carrero.es/?query-22506824-page=521) [Siguente](https://carrero.es/?query-22506824-page=2)\n\nBuscar:\n",
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  "llmsTxtPreview": "# Carrero.es\n\n> Carrero.es en un blog iniciado por David Carrero Fernández-Baillo. Todo sobre Internet, Tecnología y Negocios. BA y emprendediendo otra vez con Stackscale.\n\n## Main\n- [Carrero.es es el sitio personal de David Carrero Fernández-Baillo](https://carrero.es): Carrero.es en un blog iniciado por David Carrero Fernández-Baillo. Todo sobre Internet, Tecnología y Negocios. BA y emp…\n- [Carrero](https://carrero.es/)\n- [Mis inversiones BA](https://carrero.es/inversiones/)\n- [Newsletter](https://carrero.es/boletin/)\n- [Suscribete al RSS](https://carrero.es/feed)\n- [Contacto](https://carrero.es/contactar/)\n\n",
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      "code": "<meta property=\"og:image\" content=\"https://yoursite.com/og-image.jpg\">\n<meta property=\"og:url\" content=\"https://carrero.es\">\n<meta property=\"og:type\" content=\"website\">",
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        }
      ]
    },
    {
      "id": "add_content_signals",
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      "language": "txt",
      "code": "User-agent: *\nContent-Signal: search=yes, ai-input=yes, ai-train=no",
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        },
        {
          "id": "nginx",
          "label": "Nginx",
          "language": "nginx",
          "filename": "server block",
          "code": "# Inside your server { } block:\nadd_header Content-Signal \"search=yes, ai-input=yes, ai-train=no\" always;"
        },
        {
          "id": "apache",
          "label": "Apache",
          "language": "apache",
          "filename": ".htaccess",
          "code": "# In .htaccess (or VirtualHost):\nHeader set Content-Signal \"search=yes, ai-input=yes, ai-train=no\""
        },
        {
          "id": "wordpress",
          "label": "WordPress",
          "language": "php",
          "filename": "functions.php",
          "code": "<?php\n// In your theme's functions.php or a small mu-plugin\nadd_action('send_headers', function () {\n    header('Content-Signal: search=yes, ai-input=yes, ai-train=no');\n});\n\n// Optional: also append the directive to the dynamic robots.txt\nadd_filter('robots_txt', function ($output) {\n    return $output . \"\\nContent-Signal: search=yes, ai-input=yes, ai-train=no\\n\";\n}, 10, 1);"
        },
        {
          "id": "nextjs",
          "label": "Next.js",
          "language": "typescript",
          "filename": "middleware.ts",
          "code": "// middleware.ts (Next.js 13+ App Router or Pages Router)\nimport { NextResponse } from 'next/server';\nexport function middleware() {\n  const res = NextResponse.next();\n  res.headers.set(\n    'Content-Signal',\n    'search=yes, ai-input=yes, ai-train=no'\n  );\n  return res;\n}\nexport const config = { matcher: '/:path*' };"
        },
        {
          "id": "cloudflare",
          "label": "Cloudflare Workers",
          "language": "javascript",
          "filename": "worker.js",
          "code": "// Cloudflare Worker that proxies your origin and adds the header\nexport default {\n  async fetch(request, env, ctx) {\n    const res = await fetch(request);\n    const newRes = new Response(res.body, res);\n    newRes.headers.set(\n      'Content-Signal',\n      'search=yes, ai-input=yes, ai-train=no'\n    );\n    return newRes;\n  },\n};"
        },
        {
          "id": "express",
          "label": "Express / Fastify",
          "language": "javascript",
          "filename": "server.js",
          "code": "// Express\napp.use((req, res, next) => {\n  res.setHeader('Content-Signal', 'search=yes, ai-input=yes, ai-train=no');\n  next();\n});\n\n// Fastify\nfastify.addHook('onSend', (request, reply, payload, done) => {\n  reply.header('Content-Signal', 'search=yes, ai-input=yes, ai-train=no');\n  done();\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\">"
        }
      ]
    }
  ]
}

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