MacroPulse US GDP & Economic Revision Trail

{
  "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": {
    "key": "gdp_change",
    "name": "Real GDP — Percent Change (Annual Rate)",
    "prints": [
      {
        "as_of": "2026-06-25T12:32:41.000Z",
        "value": 2.1,
        "round_id": "36893488147419103237",
        "revision_from_previous": 0.5
      },
      {
        "as_of": "2026-06-11T12:49:51.000Z",
        "value": 1.6,
        "round_id": "36893488147419103236",
        "revision_from_previous": 0
      }
    ],
    "contract": "0xe0eda54fC1362C0d7d0ff855E4fCEA79916Fe094",
    "deterministic": true,
    "latest_vs_first": {
      "first_print": {
        "value": 1.4
      },
      "latest_print": {
        "value": 2.1
      },
      "total_revision": 0.7
    },
    "trail_semantics": "revisions"
  }
}