Sumbloom by CyberMax

{
  "protocolVersion": "0.3.0",
  "name": "Sumbloom by CyberMax",
  "description": "Paid API keys from $5/month (Starter: 10,000 puzzles a month); free tier 50 puzzles a day per IP with no key. Buy: https://sumbloom.cybermaxtools.com/buy/starter?s=lead \u00b7 all plans: https://sumbloom.cybermaxtools.com/docs#pricing. Original number puzzles for apps, classroom tools, newsletters and AI agents: 1,800 solver-checked Cage Grids (4x4 to 6x6, exactly one solution each), Target puzzles and Brick Pyramids at 3 levels, as JSON or printable SVG with solutions, plus a daily puzzle. Paid keys include commercial use in your app or product.",
  "url": "https://sumbloom.cybermaxtools.com/mcp",
  "preferredTransport": "JSONRPC",
  "version": "1.0.0",
  "provider": {
    "organization": "CyberMax",
    "url": "https://cybermaxtools.com/store/"
  },
  "documentationUrl": "https://sumbloom.cybermaxtools.com/docs",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "securitySchemes": {
    "apiKey": {
      "type": "apiKey",
      "in": "header",
      "name": "x-api-key",
      "description": "Optional paid key (https://sumbloom.cybermaxtools.com/docs#pricing); leave out for the free tier."
    }
  },
  "security": [
    {},
    {
      "apiKey": []
    }
  ],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "get_number_puzzle",
      "name": "get_number_puzzle",
      "description": "Returns an original number puzzle (Target, Cage Grid or Brick Pyramid) at easy, medium or hard, with its rules, the puzzle as JSON, an SVG image URL for printing and, optionally, the solution. Cage Grids and Pyramids have exactly one solution (solver-checked). Use it for math practice, classroom warm-ups, puzzle apps or a daily puzzle. Free tier 50 puzzles a day without a key; paid API keys (Bearer) for more.",
      "tags": [
        "sumbloom",
        "data api",
        "mcp"
      ]
    }
  ],
  "x-pricing": {
    "api": "Sumbloom API",
    "currency": "USD",
    "free": {
      "price": 0,
      "callsPerDayPerIp": 50,
      "perMinutePerIp": 30,
      "key": "none needed"
    },
    "plans": [
      {
        "id": "starter",
        "name": "Starter",
        "price": 5,
        "billing": "per month",
        "calls": 10000,
        "per": "calendar month (UTC)",
        "perMinute": 60,
        "buy": "https://sumbloom.cybermaxtools.com/buy/starter?s=agentcard"
      },
      {
        "id": "pro",
        "name": "Pro",
        "price": 15,
        "billing": "per month",
        "calls": 100000,
        "per": "calendar month (UTC)",
        "perMinute": 120,
        "buy": "https://sumbloom.cybermaxtools.com/buy/pro?s=agentcard"
      },
      {
        "id": "starter-yearly",
        "name": "Starter yearly",
        "price": 50,
        "billing": "per year",
        "calls": 10000,
        "per": "calendar month (UTC)",
        "perMinute": 60,
        "buy": "https://sumbloom.cybermaxtools.com/buy/starter-yearly?s=agentcard"
      },
      {
        "id": "pro-yearly",
        "name": "Pro yearly",
        "price": 150,
        "billing": "per year",
        "calls": 100000,
        "per": "calendar month (UTC)",
        "perMinute": 120,
        "buy": "https://sumbloom.cybermaxtools.com/buy/pro-yearly?s=agentcard"
      }
    ],
    "unit": "puzzles",
    "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://sumbloom.cybermaxtools.com/key"
    },
    "manageKey": "https://sumbloom.cybermaxtools.com/manage",
    "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://sumbloom.cybermaxtools.com/manage."
  },
  "x-mcp": "https://sumbloom.cybermaxtools.com/mcp",
  "x-openapi": "https://sumbloom.cybermaxtools.com/openapi.json"
}