BuiltWith

{
  "protocolVersion": "0.3.0",
  "name": "BuiltWith",
  "description": "BuiltWith is a website technology intelligence agent. It identifies the technology stack, relationships, trends, products, traffic, trust signals, financial and social profiles, keywords, and metadata for any website, and can list and rank the websites that use a given technology.",
  "url": "https://api.builtwith.com/mcp",
  "preferredTransport": "HTTP+JSON",
  "iconUrl": "https://builtwith.com/favicon.ico",
  "version": "1.3.0",
  "documentationUrl": "https://api.builtwith.com/llms.txt",
  "provider": {
    "organization": "BuiltWith Pty Ltd",
    "url": "https://builtwith.com"
  },
  "capabilities": {
    "streaming": true,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "securitySchemes": {
    "builtwithApiKey": {
      "type": "http",
      "scheme": "bearer",
      "description": "Bring your own BuiltWith API key. Send it as: Authorization: Bearer YOUR_BUILTWITH_API_KEY. Get a key at https://builtwith.com/api."
    }
  },
  "security": [
    {
      "builtwithApiKey": []
    }
  ],
  "skills": [
    {
      "id": "domain-technology-profile",
      "name": "Domain technology profile",
      "description": "Look up the full technology stack detected on a website, including current and historical technologies, first/last detected dates, categories, and metadata.",
      "tags": [
        "technology-lookup",
        "tech-stack",
        "domain",
        "metadata"
      ],
      "examples": [
        "What technologies does shopify.com use?",
        "Show the full tech profile and metadata for stripe.com",
        "When did example.com start using Cloudflare?"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json",
        "text/plain"
      ]
    },
    {
      "id": "technology-changes",
      "name": "Technology change tracking",
      "description": "Report technologies added, dropped, or changed on a website over time, and the redirects associated with a domain.",
      "tags": [
        "change-tracking",
        "added",
        "dropped",
        "redirects"
      ],
      "examples": [
        "What technologies has airbnb.com added or dropped recently?",
        "Show the redirect history for example.com"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "website-relationships",
      "name": "Website relationships",
      "description": "Discover relationships between websites \u2014 shared analytics, advertising, hosting, and tracking identifiers that link domains to the same owner or network.",
      "tags": [
        "relationships",
        "ownership",
        "connected-sites"
      ],
      "examples": [
        "What other websites are related to example.com?",
        "Find sites that share the same Google Analytics account as example.com"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "technology-lists-and-trends",
      "name": "Technology lists and trends",
      "description": "List and rank the websites using a specific technology, with adoption trends over time, market share, and tag-based segmentation.",
      "tags": [
        "lists",
        "trends",
        "market-share",
        "adoption"
      ],
      "examples": [
        "List the most popular websites using Klaviyo",
        "Show the adoption trend for Next.js over the last year",
        "Which ecommerce platforms are gaining market share?"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "company-and-firmographics",
      "name": "Company and firmographics",
      "description": "Resolve a company name to its primary website, and retrieve firmographic, financial, social, traffic, and trust signals for a domain.",
      "tags": [
        "company",
        "firmographics",
        "financial",
        "social",
        "trust",
        "traffic"
      ],
      "examples": [
        "What is the website for the company 'Patagonia'?",
        "Give me the financial and social profile for shopify.com",
        "Is example.com a trustworthy website?"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "keywords-and-recommendations",
      "name": "Keywords and recommendations",
      "description": "Retrieve the keywords a website ranks for, search websites by keyword, and get technology recommendations for a domain.",
      "tags": [
        "keywords",
        "search",
        "recommendations"
      ],
      "examples": [
        "What keywords does example.com rank for?",
        "Find websites about 'sustainable fashion'",
        "Recommend technologies for example.com"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "natural-language-site-discovery",
      "name": "Natural-language site discovery",
      "description": "Answer free-form questions that find and rank lists of websites by technology, concept, or attribute, returning structured results.",
      "tags": [
        "ask",
        "discovery",
        "semantic-search",
        "vector"
      ],
      "examples": [
        "Find US-based Shopify stores selling outdoor gear that also use Klaviyo",
        "List SaaS companies using Stripe and Intercom"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "supportsAuthenticatedExtendedCard": false,
  "additionalInterfaces": [
    {
      "url": "https://api.builtwith.com/mcp",
      "transport": "HTTP+JSON"
    }
  ]
}