{
  "id": "api:x402-2da5b09dbaa1ddfd",
  "kind": "api",
  "name": "x402-agent-api.onrender.com/api/v1/hvac-duct-size",
  "description": "HVAC duct sizing calculator: any two of duct size (round or rectangular), airflow, velocity and friction rate. Round and rectangular equivalents, nearest standard sizes, friction loss per 100 ft (Darcy-Weisbach, Colebrook), velocity pressure, design checks. Equal-friction sizing, fixed-depth ducts, IP or SI. Shows every step with the numbers. $0.002 USDC per call.",
  "category": "x402",
  "url": "https://x402-agent-api.onrender.com/api/v1/hvac-duct-size",
  "price": null,
  "x402": true,
  "meta": {
    "network": "eip155:8453",
    "scheme": "exact",
    "pay_to": "0x6847231bD28E16A0A57c59793f6B8BD8CC0043aC",
    "method": "POST",
    "last_updated": "2026-10-25T11:38:08.727Z"
  },
  "trust": {
    "verified": false,
    "uptime_pct": 100,
    "latency_ms": 186,
    "checks": 1
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}