Marketplace · API · x402

x402-agent-api.onrender.com/api/v1/hvac-psychrometrics

Psychrometric calculator for HVAC engineering: from any two of dry bulb, wet bulb, dew point, RH, humidity ratio, enthalpy or grains, the full moist-air state (plus specific volume, density, vapor pressure) at any elevation, IP or SI. ASHRAE Fundamentals 2021 equations, cross-checked against PsychroLib. Shows every step with the numbers and ASHRAE references. $0.002 USDC per call.

Endpointhttps://x402-agent-api.onrender.com/api/v1/hvac-psychrometrics
Trust100% uptime over 1 checks · ~933 ms
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0x6847231bD28E16A0A57c59793f6B8BD8CC0043aC
methodPOST
last updated2026-10-28T17:11:56.941Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402-agent-api.onrender.com/api/v1/hvac-psychrometrics
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-ef67f48dfa2dc1eb

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}

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