longevity biomarker derived

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {
      "lang": "en",
      "biomarker": "ApoB"
    }
  },
  "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": {
      "category": "Cardiovascular",
      "biomarker": "ApoB",
      "assessment": "SUBOPTIMAL",
      "value_provided": "105 mg/dL",
      "what_this_measures": "ApoB counts every atherogenic lipoprotein particle in your blood — a more accurate cardiovascular risk predictor than LDL-C",
      "longevity_significance": "ApoB is the strongest modifiable predictor of atherosclerosis and cardiovascular mortality — reducing it is arguably the highest-leverage longevity intervention available",
      "longevity_optimal_range": {
        "value": "<70 mg/dL",
        "source": "Peter Attia / cardiovascular longevity consensus",
        "rationale": "Lower ApoB dramatically reduces lifetime cardiovascular event risk — the leading cause of premature death globally"
      }
    }
  }
}