{
  "tool": "acos-change-explainer",
  "methodVersion": "1.0.0",
  "docs": "https://profitfirstppc.com/tools/acos-change-explainer/",
  "openapi": "https://profitfirstppc.com/api/openapi.json",
  "usage": "POST normalized totals from comparable reports. Browser files never call this endpoint. GET returns usage.",
  "example": {
    "before": {
      "clicks": 1000,
      "spend": 1000,
      "orders": 100,
      "sales": 5000
    },
    "after": {
      "clicks": 1000,
      "spend": 1200,
      "orders": 80,
      "sales": 3600
    }
  }
}