PayAPI Market UK Finance Data API

Endpoints and prices

Payment evidence

402 payload captured at 2026-07-20 19:18:01 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://finance.payapi.market/interest-rates",
    "description": "Bank of England base rate history with current rate and time series."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "months": 12
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "source": "Bank of England",
            "history": [
              {
                "date": "2024-08-01",
                "rate": 5
              },
              {
                "date": "2024-11-07",
                "rate": 4.75
              }
            ],
            "currency": "GBP",
            "data_points": 8,
            "current_rate": 4.75,
            "period_months": 12
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "months"
                ],
                "properties": {
                  "months": {
                    "type": "integer",
                    "maximum": 120,
                    "minimum": 1,
                    "description": "Months of base-rate history to return (1-120)."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "source": {
                    "type": "string"
                  },
                  "history": {
                    "type": "array",
                    "description": "Rate change history with date and rate."
                  },
                  "currency": {
                    "type": "string"
                  },
                  "data_points": {
                    "type": "integer"
                  },
                  "current_rate": {
                    "type": "number"
                  },
                  "period_months": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}