Public holidays for ~200 countries and their subdivisions, plus business-day arithmetic: i

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x15459498e1191d8787c83177809bd54022fA18c4",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "country": "US",
          "days": 3,
          "from": "2026-12-24"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "body": {
          "businessDays": "number (range mode); calendarDays; holidays[]",
          "calendar": "object — { country, countryName, state?, types, weekend, source }",
          "holidays": "array (year mode) — { date, name, type, substitute? }",
          "isBusinessDay": "boolean (date mode); isHoliday; holidays[]; nextBusinessDay",
          "result": "string (days mode) — resulting date; weekday; skipped { weekendDays, holidays }"
        },
        "bodyType": "json",
        "example": {
          "calendar": {
            "country": "US",
            "countryName": "United States of America",
            "source": "date-holidays ruleset (data CC-BY-3.0, attribution required if redistributed)",
            "types": [
              "public"
            ],
            "weekend": [
              "Sunday",
              "Saturday"
            ]
          },
          "days": 3,
          "from": "2026-12-24",
          "result": "2026-12-30",
          "skipped": {
            "holidays": [
              {
                "date": "2026-12-25",
                "name": "Christmas Day"
              }
            ],
            "weekendDays": 2
          },
          "weekday": "Wednesday"
        }
      }
    },
    "routeTemplate": "/holidays",
    "schema": {
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "country": {
                  "description": "2-letter ISO country code (required).",
                  "type": "string"
                },
                "date": {
                  "description": "YYYY-MM-DD — is this date a holiday / business day, and the next business day.",
                  "type": "string"
                },
                "days": {
                  "description": "Add this many business days to from (negative to subtract).",
                  "type": "integer"
                },
                "from": {
                  "description": "YYYY-MM-DD start date for days/to modes.",
                  "type": "string"
                },
                "region": {
                  "description": "Sub-subdivision code where the ruleset has one.",
                  "type": "string"
                },
                "state": {
                  "description": "Subdivision code (e.g. CA for US-California, NSW for AU).",
                  "type": "string"
                },
                "to": {
                  "description": "YYYY-MM-DD — count business days in [from, to] and list holidays inside.",
                  "type": "string"
                },
                "types": {
                  "description": "Holiday types that block a business day (default [public]).",
                  "items": {
                    "enum": [
                      "public",
                      "bank",
                      "school",
                      "optional",
                      "observance"
                    ],
                    "type": "string"
                  },
                  "type": "array"
                },
                "weekend": {
                  "description": "Weekend weekdays 0=Sunday…6=Saturday (default [0,6]).",
                  "items": {
                    "type": "integer"
                  },
                  "type": "array"
                },
                "year": {
                  "description": "List all holidays in this year (default: current year) when no date/from is given.",
                  "type": "integer"
                }
              },
              "required": [
                "country"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        }
      }
    }
  }
}

curl "https://workbot1.oddsys.org/holidays"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://workbot1.oddsys.org/holidays");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://workbot1.oddsys.org/holidays")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header