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 · 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.",
  "author": "CyberMax",
  "wellKnownURI": "https://sumbloom.cybermax-tools.workers.dev/.well-known/agent-card.json",
  "url": "https://sumbloom.cybermaxtools.com/mcp",
  "version": "1.0.0",
  "provider": {
    "organization": "CyberMax",
    "url": "https://cybermaxtools.com/store/"
  },
  "documentationUrl": "https://sumbloom.cybermaxtools.com/docs",
  "iconUrl": null,
  "supportsAuthenticatedExtendedCard": null,
  "security": [
    {},
    {
      "apiKey": []
    }
  ],
  "securitySchemes": {
    "apiKey": {
      "in": "header",
      "name": "x-api-key",
      "type": "apiKey",
      "description": "Optional paid key (https://sumbloom.cybermaxtools.com/docs#pricing); leave out for the free tier."
    }
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "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"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    }
  ],
  "conformance": true,
  "conformance_errors": null,
  "homepage": null,
  "repository": null,
  "license": null,
  "pricing": null,
  "contact": null,
  "id": "d6e46740-5105-4b62-9653-8aba2c89ede3",
  "category": "games-entertainment",
  "category_secondary": null
}