HALOWERK marktwerk

Live 402 challenge

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

{
  "docs": "https://markt.halowerk.com/llms.txt",
  "name": "exchange_trading_hours",
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "asset": "USDC",
        "version": "2",
        "eip712Domain": {
          "name": "USD Coin",
          "chainId": 8453,
          "version": "2",
          "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        },
        "network_name": "Base Mainnet",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "pricing": "https://markt.halowerk.com/pricing",
  "summary": "Trading hours and holiday calendar for ten regulated exchanges: whether the main session is running right now, which phase the day is in, when it next opens and closes, seconds until that change, half days and the holidays of the coming thirty days, all in the exchange own time zone.",
  "resource": {
    "url": "https://markt.halowerk.com/hours",
    "iconUrl": "https://markt.halowerk.com/favicon.svg",
    "mimeType": "application/json",
    "description": "Answers the timing question an agent has before it schedules anything against a regulated exchange: is the main session running, and if not, when does it start. Covers XETR, XFRA, XNYS, XNAS, XLON, XPAR, XAMS, XSWX, XTKS and XHKG with pre trading, main session, post trading, half days and the holidays of 2026 and 2027. Time zones are resolved through IANA names and Intl at the queried instant, never through a fixed offset to UTC, because summer time starts and ends on different dates in the Euro",
    "serviceName": "HALOWERK marktwerk"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "mic": "XETR"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "mic"
                ],
                "properties": {
                  "mic": {
                    "type": "string",
                    "default": "XETR",
                    "pattern": "^[A-Za-z]{4}$",
                    "description": "Market Identifier Code of the exchange: XETR, XFRA, XNYS, XNAS, XLON, XPAR, XAMS, XSWX, XTKS or XHKG."
                  },
                  "timestamp": {
                    "type": "string",
                    "description": "Instant to evaluate, as an ISO 8601 string. Empty or absent means now."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          }
        }
      }
    }
  },
  "price_usdc": "0.002",
  "description": "Answers the timing question an agent has before it schedules anything against a regulated exchange: is the main session running, and if not, when does it start. Covers XETR, XFRA, XNYS, XNAS, XLON, XPAR, XAMS, XSWX, XTKS and XHKG with pre trading, main session, post trading, half days and the holidays of 2026 and 2027. Time zones are resolved through IANA names and Intl at the queried instant, never through a fixed offset to UTC, because summer time starts and ends on different dates in the European Union and the United States and a hardcoded offset is wrong for several weeks each year. Tokyo and Hong Kong trade in two blocks with a midday recess, so phase can be break: reporting that recess as closed would tell a caller the day is over when it is not. Every holiday carries a basis field saying whether the date was computed from a rule, transcribed from a published calendar, or is still provisional, because the Hong Kong dates follow the lunar calendar and are gazetted yearly while the Western ones follow Easter and nth weekday rules that can be recomputed. table_maintained_on states when the table was last touched. There is no external source and no price, quote or volume field of any kind: this endpoint is calendar and time logic, and the licensing line that keeps quote data out of it is the reason it can be sold at all.",
  "inputSchema": {
    "type": "object",
    "required": [
      "mic"
    ],
    "properties": {
      "mic": {
        "type": "string",
        "default": "XETR",
        "pattern": "^[A-Za-z]{4}$",
        "description": "Market Identifier Code of the exchange: XETR, XFRA, XNYS, XNAS, XLON, XPAR, XAMS, XSWX, XTKS or XHKG."
      },
      "timestamp": {
        "type": "string",
        "description": "Instant to evaluate, as an ISO 8601 string. Empty or absent means now."
      }
    },
    "additionalProperties": false
  },
  "price_model": "per_call",
  "x402Version": 2,
  "instructions": "Sign the accepted terms with an x402 client and repeat the request with the payment header.",
  "outputSchema": {
    "type": "object",
    "properties": {
      "mic": {
        "type": "string"
      },
      "note": {
        "type": "string"
      },
      "open": {
        "type": "boolean"
      },
      "phase": {
        "enum": [
          "pre",
          "main",
          "break",
          "post",
          "closed"
        ],
        "type": "string"
      },
      "exchange": {
        "type": "string"
      },
      "half_day": {
        "type": "boolean"
      },
      "timezone": {
        "type": "string"
      },
      "next_open_iso": {
        "type": [
          "string",
          "null"
        ]
      },
      "next_close_iso": {
        "type": [
          "string",
          "null"
        ]
      },
      "seconds_to_change": {
        "type": [
          "integer",
          "null"
        ]
      },
      "table_maintained_on": {
        "type": "string"
      },
      "holidays_next_30_days": {
        "type": "array",
        "items": {
          "type": "object"
        }
      }
    }
  },
  "payment_header": "PAYMENT-SIGNATURE",
  "capability_request": {
    "url": "https://bedarf.halowerk.com/capabilities/request",
    "cost": "free",
    "method": "POST",
    "description": "Missing a capability, or does the scope not fit? Report the need here - no payment required. Similar reports are bundled; the response returns an id you can check back on.",
    "body_example": {
      "max_price": 0.01,
      "description": "what exactly is needed",
      "requested_capability": "short label"
    }
  }
}

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",
      "asset": "USDC",
      "version": "2",
      "eip712Domain": {
        "name": "USD Coin",
        "chainId": 8453,
        "version": "2",
        "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      },
      "network_name": "Base Mainnet",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "mic": "XETR"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "mic"
              ],
              "properties": {
                "mic": {
                  "type": "string",
                  "default": "XETR",
                  "pattern": "^[A-Za-z]{4}$",
                  "description": "Market Identifier Code of the exchange: XETR, XFRA, XNYS, XNAS, XLON, XPAR, XAMS, XSWX, XTKS or XHKG."
                },
                "timestamp": {
                  "type": "string",
                  "description": "Instant to evaluate, as an ISO 8601 string. Empty or absent means now."
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-08-12 09:15Z

Last indexed by Roundhouse

2026-09-11 09:00Z

Last enriched (probe, favicon, geo)

2026-09-21 07:45Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402