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": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
        "transactionVersions": [
          0,
          1
        ]
      },
      "payTo": "E21AWkUtLz4BP7AaT82CF7v86Kmv4YzN4NAR1FQnEmqy",
      "amount": "50000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://workspace-x402-paywall.onrender.com/brief/full",
    "tags": [
      "data",
      "api",
      "x402"
    ],
    "mimeType": "application/json",
    "description": "Full market bundle for agents: the complete topic brief (prediction markets on Polymarket and Kalshi, SEC EDGAR company record, crypto spot price, short context), the one-call market brief (BTC/ETH/SOL spot with 24h change, Fear & Greed index, trending prediction markets, widest verified cross-venue gap), the live SOL CEX/DEX spread snapshot, and prediction markets expiring in the next 48 hours - four calls in one, at one $0.05 price",
    "serviceName": "Spread Paywall API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "q": "example"
          }
        },
        "output": {
          "example": {
            "note": "One-call bundle: topic brief + market brief + SOL spread + expiring markets.",
            "as_of": "2026-10-28T14:00:00.000Z",
            "topic": "fed",
            "bundle": "full",
            "price_usd": 0.05,
            "components": {
              "sol_spread": {
                "asset": "SOL",
                "widest_spread": {
                  "gross_bps": 38.2,
                  "est_net_bps": 31.7
                }
              },
              "topic_brief": {
                "topic": "fed",
                "crypto": null,
                "company": null,
                "context": null,
                "prediction_markets": {
                  "kalshi": [],
                  "polymarket": []
                }
              },
              "market_brief": {
                "as_of": "2026-10-28T14:00:00.000Z",
                "crypto": [],
                "fear_greed": {
                  "value": 32,
                  "classification": "Fear"
                },
                "top_cross_venue_gap": null,
                "trending_predictions": []
              },
              "markets_expiring_soon": {
                "count": 0,
                "expiring": [],
                "window_hours": 48
              }
            },
            "standalone_total_usd": 0.09
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                "required": [
                  "q"
                ],
                "properties": {
                  "q": {
                    "type": "string",
                    "description": "Topic keyword or ticker (e.g. fed, trump, NVDA, bitcoin)"
                  }
                }
              }
            },
            "additionalProperties": false
          }
        }
      }
    }
  },
  "x402Version": 2,
  "sample_output": {
    "note": "<bundle note>",
    "as_of": "<ISO timestamp>",
    "topic": "<query>",
    "bundle": "full",
    "price_usd": 0.05,
    "components": {
      "sol_spread": "<object, same shape as /spread>",
      "topic_brief": "<object, same shape as /brief/topic>",
      "market_brief": "<object, same shape as /market/brief>",
      "markets_expiring_soon": "<object, same shape as /markets/expiring-soon>"
    },
    "standalone_total_usd": 0.09
  }
}

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": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
      "transactionVersions": [
        0,
        1
      ]
    },
    "payTo": "E21AWkUtLz4BP7AaT82CF7v86Kmv4YzN4NAR1FQnEmqy",
    "amount": "50000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "q": "example"
        }
      },
      "output": {
        "example": {
          "note": "One-call bundle: topic brief + market brief + SOL spread + expiring markets.",
          "as_of": "2026-10-28T14:00:00.000Z",
          "topic": "fed",
          "bundle": "full",
          "price_usd": 0.05,
          "components": {
            "sol_spread": {
              "asset": "SOL",
              "widest_spread": {
                "gross_bps": 38.2,
                "est_net_bps": 31.7
              }
            },
            "topic_brief": {
              "topic": "fed",
              "crypto": null,
              "company": null,
              "context": null,
              "prediction_markets": {
                "kalshi": [],
                "polymarket": []
              }
            },
            "market_brief": {
              "as_of": "2026-10-28T14:00:00.000Z",
              "crypto": [],
              "fear_greed": {
                "value": 32,
                "classification": "Fear"
              },
              "top_cross_venue_gap": null,
              "trending_predictions": []
            },
            "markets_expiring_soon": {
              "count": 0,
              "expiring": [],
              "window_hours": 48
            }
          },
          "standalone_total_usd": 0.09
        }
      }
    },
    "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",
              "required": [
                "q"
              ],
              "properties": {
                "q": {
                  "type": "string",
                  "description": "Topic keyword or ticker (e.g. fed, trump, NVDA, bitcoin)"
                }
              }
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-11-08 07:17Z

Last indexed by Roundhouse

2026-11-15 15:20Z

Last enriched (probe, favicon, geo)

2026-11-09 05:45Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402