saylorinnovations.com

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required to access this resource.",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "memo": "saylor:fun:dice",
        "name": "USD Coin",
        "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "memo": "saylor:fun:dice",
        "session": "eyJhcnRpY2xlSWQiOiJmdW46ZGljZSIsInJlZmVyZW5jZSI6IkE3bkFKeWdUdExzR0wyS2s2Q0p6a0N1NGdWVlFTS1hLV29CNjJ3dGt5MU5KIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIwNzc0NDA1OTd9.5kMmeC9aHwKzecTnnJ-Se-Z4W5c5vcbku29TmXvyzDI",
        "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
        "reference": "A7nAJygTtLsGL2Kk6CJzkCu4gVVQSKXKWoB62wtky1NJ"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://saylorinnovations.com/api/fun/dice",
    "tags": [
      "dice roller",
      "random number",
      "tabletop rpg",
      "x402 test",
      "utility"
    ],
    "iconUrl": "https://saylorinnovations.com/og-image.jpg",
    "mimeType": "application/json",
    "description": "Dice roller - any number of faces and dice, with each roll and the total",
    "serviceName": "Saylor Innovations Utilities"
  },
  "extensions": {
    "tags": [
      "dice roller",
      "random number",
      "tabletop rpg",
      "x402 test",
      "utility"
    ],
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "count": "1",
            "faces": "6"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "faces": 6,
            "rolls": [
              4
            ],
            "total": 4,
            "notation": "1d6"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "POST",
                  "PUT",
                  "PATCH",
                  "DELETE",
                  "HEAD"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "count": {
                    "type": "string",
                    "default": "1",
                    "pattern": "^[0-9]{1,2}$",
                    "examples": [
                      "1",
                      "2",
                      "5"
                    ],
                    "description": "How many dice to roll, 1 to 20 (default 1)"
                  },
                  "faces": {
                    "type": "string",
                    "default": "6",
                    "pattern": "^[0-9]{1,4}$",
                    "examples": [
                      "6",
                      "20",
                      "100"
                    ],
                    "description": "Number of faces on each die, 2 to 1000 (default 6)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "json"
              },
              "example": {
                "type": "object",
                "required": [
                  "rolls",
                  "total"
                ],
                "properties": {
                  "count": {
                    "type": "number",
                    "description": "Number of dice rolled"
                  },
                  "faces": {
                    "type": "number",
                    "description": "Number of faces on each die"
                  },
                  "rolls": {
                    "type": "array",
                    "items": {
                      "type": "number"
                    },
                    "description": "Each die result in roll order, from 1 to faces"
                  },
                  "total": {
                    "type": "number",
                    "description": "Sum of all rolls"
                  },
                  "notation": {
                    "type": "string",
                    "description": "Standard dice notation, e.g. 2d20"
                  },
                  "generated_at": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "Time this response was generated (UTC)"
                  }
                }
              }
            }
          }
        }
      }
    },
    "method": "GET",
    "example": {
      "count": 1,
      "faces": 6,
      "rolls": [
        4
      ],
      "total": 4,
      "notation": "1d6"
    },
    "license": "LicenseRef-Saylor-Agent-Use-1.0",
    "mimeType": "application/json",
    "freshness": "generated on every request",
    "freeSample": "https://saylorinnovations.com/api/fun/dice/free",
    "tokenCount": null,
    "inputSchema": {
      "count": {
        "default": "1",
        "pattern": "^[0-9]{1,2}$",
        "examples": [
          "1",
          "2",
          "5"
        ],
        "description": "How many dice to roll, 1 to 20 (default 1)"
      },
      "faces": {
        "default": "6",
        "pattern": "^[0-9]{1,4}$",
        "examples": [
          "6",
          "20",
          "100"
        ],
        "description": "Number of faces on each die, 2 to 1000 (default 6)"
      }
    },
    "serviceName": "Saylor Innovations Utilities",
    "instructions": "STANDARD PATH (works with stock x402 clients): send payload.transaction — a base64 partially-signed Solana transaction — and we route verify/settle through an x402 facilitator that sponsors the fee and submits it. Include the chosen accepts entry as \"accepted\" so we can match terms. ALTERNATIVE PATH (no facilitator): Pick ONE entry from accepts and use the reference and session from THAT entry — each asset has its own. USDC or USDT: send an SPL transfer of the exact amount. Native SOL (asset=So11111111111111111111111111111111111111112, extra.native=true): send that many lamports with a system transfer. Either way include extra.reference as a read-only account (Solana Pay style), then retry with PAYMENT-SIGNATURE: base64({x402Version:2, payload:{session, reference}}). If your client cannot attach a reference, send payload.signature instead (USDC only). SOL amounts are quoted live and expire in 120s; stablecoins do not move. The facilitator path verifies and settles in this request. Only the alternative self-submitted Solana path needs retries while the transfer is indexed (typically 3-4 attempts over 10-20s). On that path, a 402 saying \"payment not found on-chain yet\" means keep retrying.",
    "outputSchema": {
      "type": "object",
      "required": [
        "rolls",
        "total"
      ],
      "properties": {
        "count": {
          "type": "number",
          "description": "Number of dice rolled"
        },
        "faces": {
          "type": "number",
          "description": "Number of faces on each die"
        },
        "rolls": {
          "type": "array",
          "items": {
            "type": "number"
          },
          "description": "Each die result in roll order, from 1 to faces"
        },
        "total": {
          "type": "number",
          "description": "Sum of all rolls"
        },
        "notation": {
          "type": "string",
          "description": "Standard dice notation, e.g. 2d20"
        }
      }
    },
    "noPathTemplate": true,
    "settlementModes": [
      "facilitator-transaction",
      "self-submitted-reference"
    ],
    "typicalLatencyMs": 10
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://saylorinnovations.com/api/fun/dice",
    "description": "",
    "maxAmountRequired": "10000",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "mimeType": "application/json",
    "resource": "https://saylorinnovations.com/api/fun/dice",
    "description": "",
    "maxAmountRequired": "10000",
    "maxTimeoutSeconds": 120
  }
]

Provenance

Seen in the source catalog

2026-10-16 19:14Z

Last indexed by Roundhouse

2026-10-25 11:16Z

Last enriched (probe, favicon, geo)

2026-10-15 15:15Z

x402 version

1

Max timeout

120s

Liveness probe

HTTP 402