Spread Paywall API

Recent payments · which agents last used it

Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.

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",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD7CDd563e8F6A249B076A702b7e2C233CCF3481d",
      "amount": "15000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
        "transactionVersions": [
          0,
          1
        ]
      },
      "payTo": "E21AWkUtLz4BP7AaT82CF7v86Kmv4YzN4NAR1FQnEmqy",
      "amount": "15000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://workspace-x402-paywall.onrender.com/markets/expiring-soon",
    "tags": [
      "data",
      "api",
      "x402"
    ],
    "mimeType": "application/json",
    "description": "Returns prediction markets on Polymarket and Kalshi closing inside a time window (default 48 hours), soonest first, with live Yes prices, volume, hours to close, and a near_boundary flag for contracts priced at or above 0.95 or at or below 0.05 - a resolution radar for prediction-market agents",
    "serviceName": "Spread Paywall API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "hours": "example",
            "limit": "example"
          }
        },
        "output": {
          "example": {
            "count": 20,
            "expiring": [
              {
                "yes": 0.97,
                "event": "World Series: Game 7",
                "venue": "polymarket",
                "market": "Will the Dodgers win Game 7?",
                "volume": 231000,
                "close_time": "2026-10-29T02:00:00.000Z",
                "near_boundary": true,
                "hours_to_close": 5.2
              }
            ],
            "window_hours": 48
          }
        }
      },
      "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"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "hours": {
                    "type": "string",
                    "description": "Integer 1-168, look-ahead window in hours (default 48)"
                  },
                  "limit": {
                    "type": "string",
                    "description": "Integer 1-50, max markets to return (default 20)"
                  }
                }
              }
            },
            "additionalProperties": false
          }
        }
      }
    }
  },
  "x402Version": 2,
  "sample_output": {
    "count": "<number>",
    "expiring": [
      {
        "yes": "<0-1>",
        "event": "<event title>",
        "venue": "polymarket",
        "market": "<market question>",
        "volume": "<number>",
        "subject": "<subject>",
        "close_time": "<ISO time>",
        "near_boundary": false,
        "hours_to_close": "<number>"
      }
    ],
    "window_hours": 48
  }
}

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",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xD7CDd563e8F6A249B076A702b7e2C233CCF3481d",
    "amount": "15000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
      "transactionVersions": [
        0,
        1
      ]
    },
    "payTo": "E21AWkUtLz4BP7AaT82CF7v86Kmv4YzN4NAR1FQnEmqy",
    "amount": "15000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "hours": "example",
          "limit": "example"
        }
      },
      "output": {
        "example": {
          "count": 20,
          "expiring": [
            {
              "yes": 0.97,
              "event": "World Series: Game 7",
              "venue": "polymarket",
              "market": "Will the Dodgers win Game 7?",
              "volume": 231000,
              "close_time": "2026-10-29T02:00:00.000Z",
              "near_boundary": true,
              "hours_to_close": 5.2
            }
          ],
          "window_hours": 48
        }
      }
    },
    "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"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "hours": {
                  "type": "string",
                  "description": "Integer 1-168, look-ahead window in hours (default 48)"
                },
                "limit": {
                  "type": "string",
                  "description": "Integer 1-50, max markets to return (default 20)"
                }
              }
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-11-08 07:17Z

Last indexed by Roundhouse

2026-11-15 11:50Z

Last enriched (probe, favicon, geo)

2026-11-10 10:16Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402