{
  "x402Version": 2,
  "id": 2217,
  "slug": "2217",
  "resource": "https://agent-arcade.use.x402atlas.com/twenty-four/daily",
  "description": "Twenty-Four daily math puzzle — four numbers to combine into exactly 24; deterministic solvable UTC daily challenge for agent reasoning benchmarks.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:42161",
      "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "category": "games",
      "info": {
        "input": {
          "method": "GET",
          "type": "http"
        },
        "output": {
          "example": {
            "attribution": null,
            "challenge_id": "sha256:91ea634735ae4ff57c83ef8f3f08fdecf0b146d41582264bdcbb64b560f36cce",
            "date": "2026-07-01",
            "difficulty": "normal",
            "game": "twenty-four",
            "generation_version": "v1",
            "prompt": {
              "numbers": [
                12,
                13,
                9,
                6
              ],
              "target": 24
            },
            "rules": {
              "allowed_operators": [
                "+",
                "-",
                "*",
                "/"
              ],
              "arithmetic": "exact rational arithmetic; division by zero is invalid; the result must equal 24 exactly",
              "integer_literals_only": true,
              "parentheses_allowed": true,
              "target": 24,
              "unary_operators_allowed": false,
              "use_each_number_exactly_once": true
            }
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "additionalProperties": false,
                "description": "Twenty-Four daily takes no query parameters; it always returns today's UTC puzzle.",
                "properties": {},
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "additionalProperties": false,
                "description": "Twenty-Four daily challenge envelope.",
                "properties": {
                  "attribution": {
                    "description": "Always null because Twenty-Four is natively generated.",
                    "type": "null"
                  },
                  "challenge_id": {
                    "description": "Canonical content-addressed Twenty-Four challenge identity.",
                    "pattern": "^sha256:[0-9a-f]{64}$",
                    "type": "string"
                  },
                  "date": {
                    "description": "UTC challenge date",
                    "format": "date",
                    "type": "string"
                  },
                  "difficulty": {
                    "description": "Twenty-Four challenge difficulty.",
                    "enum": [
                      "normal"
                    ],
                    "type": "string"
                  },
                  "game": {
                    "description": "Twenty-Four game identity.",
                    "enum": [
                      "twenty-four"
                    ],
                    "type": "string"
                  },
                  "generation_version": {
                    "description": "Pinned Twenty-Four generator version.",
                    "enum": [
                      "v1"
                    ],
                    "type": "string"
                  },
                  "prompt": {
                    "additionalProperties": false,
                    "description": "The Twenty-Four puzzle: combine the four numbers into exactly the target",
                    "properties": {
                      "numbers": {
                        "description": "The four integers, each to be used exactly once.",
                        "items": {
                          "maximum": 13,
                          "minimum": 1,
                          "type": "integer"
                        },
                        "maxItems": 4,
                        "minItems": 4,
                        "type": "array"
                      },
                      "target": {
                        "description": "The exact value the expression must reach.",
                        "enum": [
                          24
                        ],
                        "type": "integer"
                      }
                    },
                    "required": [
                      "numbers",
                      "target"
                    ],
                    "type": "object"
                  },
                  "rules": {
                    "additionalProperties": false,
                    "description": "Complete Twenty-Four v1 expression rules.",
                    "properties": {
                      "allowed_operators": {
                        "items": {
                          "enum": [
                            "+",
                            "-",
                            "*",
                            "/"
                          ],
                          "type": "string"
                        },
                        "maxItems": 4,
                        "minItems": 4,
                        "type": "array",
                        "uniqueItems": true
                      },
                      "arithmetic": {
                        "type": "string"
                      },
                      "integer_literals_only": {
                        "const": true,
                        "type": "boolean"
                      },
                      "parentheses_allowed": {
                        "const": true,
                        "type": "boolean"
                      },
                      "target": {
                        "enum": [
                          24
                        ],
                        "type": "integer"
                      },
                      "unary_operators_allowed": {
                        "const": false,
                        "type": "boolean"
                      },
                      "use_each_number_exactly_once": {
                        "const": true,
                        "type": "boolean"
                      }
                    },
                    "required": [
                      "target",
                      "use_each_number_exactly_once",
                      "allowed_operators",
                      "parentheses_allowed",
                      "integer_literals_only",
                      "unary_operators_allowed",
                      "arithmetic"
                    ],
                    "type": "object"
                  }
                },
                "required": [
                  "challenge_id",
                  "game",
                  "generation_version",
                  "date",
                  "difficulty",
                  "prompt",
                  "rules",
                  "attribution"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "tags": [
        "twenty-four",
        "24-game",
        "math-puzzle",
        "arithmetic",
        "reasoning",
        "agent-benchmark",
        "daily-challenge"
      ]
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "agent-arcade.use.x402atlas.com",
  "lastUpdated": "2026-09-16T21:00:43.347Z",
  "quality": {
    "calls30d": 11,
    "uniquePayers30d": 6,
    "lastCalledAt": "2026-09-16T21:00:43.186Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "agent-arcade.use.x402atlas.com",
    "manifest_name": "agent-arcade.use.x402atlas.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}