Linkheft by CyberMax

{
  "protocolVersion": "0.3.0",
  "name": "Linkheft by CyberMax",
  "description": "Paid API keys from $19/month (Prospector: 100,000 domain lookups a month); free tier 1000 domain lookups a day per IP with no key. Buy: https://linkheft-api.cybermaxtools.com/buy/prospector?s=lead \u00b7 all plans: https://linkheft-api.cybermaxtools.com/docs#pricing. Bulk domain authority API: for up to 50 domains per call, a 0-100 authority score, the Common Crawl web-graph harmonic and PageRank ranks, host count, previous rank and trend (rising/stable/falling), Majestic Million rank, referring subnets and IPs, and found true/false. Open data (Common Crawl + Majestic Million), 10,296,726 domains. REST + MCP server.",
  "url": "https://linkheft-api.cybermaxtools.com/mcp",
  "preferredTransport": "JSONRPC",
  "version": "1.0.0",
  "provider": {
    "organization": "CyberMax",
    "url": "https://cybermaxtools.com/store/"
  },
  "documentationUrl": "https://linkheft-api.cybermaxtools.com/docs",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "securitySchemes": {
    "apiKey": {
      "type": "apiKey",
      "in": "header",
      "name": "x-api-key",
      "description": "Optional paid key (https://linkheft-api.cybermaxtools.com/docs#pricing); leave out for the free tier."
    }
  },
  "security": [
    {},
    {
      "apiKey": []
    }
  ],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "domain_authority",
      "name": "Domain authority (bulk)",
      "description": "Authority score (0-100), Common Crawl web-graph rank (harmonic + PageRank), hosts, previous rank and trend, Majestic Million rank, referring subnets and IPs for 1-50 domains, URLs or emails. found=false when a domain is outside the top 10M and the Majestic Million.",
      "tags": [
        "linkheft",
        "data api",
        "mcp"
      ]
    },
    {
      "id": "dataset_info",
      "name": "Data release",
      "description": "The Common Crawl web-graph release, Majestic Million date, as-of date and size of the data behind domain_authority.",
      "tags": [
        "linkheft",
        "data api",
        "mcp"
      ]
    }
  ],
  "x-pricing": {
    "api": "Linkheft API",
    "currency": "USD",
    "free": {
      "price": 0,
      "callsPerDayPerIp": 1000,
      "perMinutePerIp": 10,
      "key": "none needed"
    },
    "plans": [
      {
        "id": "prospector",
        "name": "Prospector",
        "price": 19,
        "billing": "per month",
        "calls": 100000,
        "per": "calendar month (UTC)",
        "perMinute": 30,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/prospector?s=agentcard"
      },
      {
        "id": "agency",
        "name": "Agency",
        "price": 49,
        "billing": "per month",
        "calls": 500000,
        "per": "calendar month (UTC)",
        "perMinute": 60,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/agency?s=agentcard"
      },
      {
        "id": "platform",
        "name": "Platform",
        "price": 99,
        "billing": "per month",
        "calls": 2000000,
        "per": "calendar month (UTC)",
        "perMinute": 120,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/platform?s=agentcard"
      },
      {
        "id": "payg",
        "name": "Pay as you go",
        "price": 5,
        "billing": "one-time",
        "calls": 25000,
        "per": "until used",
        "perMinute": 30,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/payg?s=agentcard"
      },
      {
        "id": "prospector-yearly",
        "name": "Prospector yearly",
        "price": 190,
        "billing": "per year",
        "calls": 100000,
        "per": "calendar month (UTC)",
        "perMinute": 30,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/prospector-yearly?s=agentcard"
      },
      {
        "id": "agency-yearly",
        "name": "Agency yearly",
        "price": 490,
        "billing": "per year",
        "calls": 500000,
        "per": "calendar month (UTC)",
        "perMinute": 60,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/agency-yearly?s=agentcard"
      },
      {
        "id": "platform-yearly",
        "name": "Platform yearly",
        "price": 990,
        "billing": "per year",
        "calls": 2000000,
        "per": "calendar month (UTC)",
        "perMinute": 120,
        "buy": "https://linkheft-api.cybermaxtools.com/buy/platform-yearly?s=agentcard"
      }
    ],
    "unit": "domain lookups",
    "howToUse": {
      "header": "x-api-key: YOUR_KEY",
      "alt": [
        "Authorization: Bearer YOUR_KEY",
        "?key=YOUR_KEY"
      ],
      "mcp": "send the key as Authorization: Bearer YOUR_KEY",
      "usage": "https://linkheft-api.cybermaxtools.com/key"
    },
    "manageKey": "https://linkheft-api.cybermaxtools.com/manage",
    "allAccess": {
      "name": "CyberMax API All-Access",
      "apis": 15,
      "url": "https://api-all-access.cybermaxtools.com/?s=agentcard-linkheft-api",
      "plans": [
        {
          "id": "all-access",
          "price": 119,
          "billing": "per month",
          "callsHere": 100000,
          "per": "calendar month (UTC)"
        },
        {
          "id": "all-access-pack",
          "price": 32,
          "billing": "one-time",
          "callsHere": 25000,
          "per": "until used"
        }
      ],
      "note": "One key for every CyberMax API; Linkheft counts it separately."
    },
    "payments": "Stripe Checkout: card, Apple Pay, Google Pay, Link. Prices are in USD; where your country charges VAT or sales tax, Stripe adds it at checkout and shows it before you pay. Cancel any time at https://linkheft-api.cybermaxtools.com/manage."
  },
  "x-mcp": "https://linkheft-api.cybermaxtools.com/mcp",
  "x-openapi": "https://linkheft-api.cybermaxtools.com/openapi.json"
}