going derived

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {}
  },
  "output": {
    "type": "json",
    "errors": {
      "400": {
        "example": {
          "error": "invalid request"
        },
        "description": "Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."
      },
      "402": {
        "description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
      },
      "500": {
        "example": {
          "error": "upstream_failed"
        },
        "description": "Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."
      }
    },
    "example": {
      "going": "Good to Firm",
      "track": "ascot (UK)",
      "data_basis": "observed_gauge",
      "rain_7d_mm": 5.3,
      "attribution": [
        "Weather data from MET Norway (met.no), used under CC BY 4.0.",
        "Observed rainfall from the UK Environment Agency real-time flood-monitoring API (environment.data.gov.uk), used under the Open Government Licence v3.0."
      ],
      "going_trend": "Drying — no significant rain forecast",
      "temperature_c": 18.2,
      "moisture_index": 18.5,
      "wind_speed_kmh": 12.4,
      "source_licences": [
        {
          "api": "https://api.met.no/weatherapi/locationforecast/2.0/",
          "source": "MET Norway (Norwegian Meteorological Institute)",
          "licence": "CC BY 4.0",
          "licence_url": "https://creativecommons.org/licenses/by/4.0/"
        },
        {
          "api": "https://environment.data.gov.uk/flood-monitoring/doc/rainfall",
          "source": "UK Environment Agency real-time flood-monitoring API",
          "licence": "Open Government Licence v3.0",
          "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
        }
      ],
      "forecast_next_3d": [
        {
          "date": "2026-07-13",
          "partial": true,
          "temperature_max_c": 21,
          "temperature_min_c": 12,
          "precipitation_sum_mm": 0.2
        }
      ],
      "going_confidence": "high",
      "antecedent_window": "Going is based on 5.3mm of OBSERVED rainfall over the last 7 days, measured at a real rain gauge through 2026-07-13 (no lag).",
      "going_description": "Fast ground, minimal cut — speed favoured",
      "antecedent_lag_days": 0,
      "antecedent_covers_through": "2026-07-13"
    }
  }
}