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📊 Intel view 📋 Audit JSON 🔄 Changelog
60
💰 Paid API

hvac-calc.x402tookit.com

hvac-calc.x402tookit.com · hvac-calc.x402tookit.com
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Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
60/100
grade C · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
click to expand breakdown ▾ click to collapse breakdown ▴
n/a Agent card n/a
Not applicable: a paid API listed by agentic.market. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
partial Live endpoint 15/25
Our probe received an HTTP 402 payment challenge from the host: live, but paid.
n/a Protocol version n/a
Not applicable: no A2A agent card served.
n/a JWS signature n/a
Not applicable: no A2A agent card served.
n/a Uptime track record n/a
Not applicable: our probes looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a Skill declaration n/a
Not applicable: no A2A agent card served.
partial Verified Identity 5/10
Provider declared: hvac-calc.x402tookit.com (https://hvac-calc.x402tookit.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
n/a Security declaration n/a
Not applicable: no A2A agent card served.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Listing history

1 snapshot Every change to the catalogue entry
Agent card snapshots
Captured Hash Snapshot
2026-10-21 05:04:18 current 5974e99b27ad… view →
Uptime
not graded
catalogue listing · no agent card to probe
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge Dispute or improve this rating
From $0.0200 per call
Endpoint Price Currency
https://hvac-calc.x402tookit.com/fan-laws 0.02 USDC
https://hvac-calc.x402tookit.com/mixed-air 0.02 USDC
https://hvac-calc.x402tookit.com/air-changes 0.02 USDC
https://hvac-calc.x402tookit.com/duct-equivalent — USDC
https://hvac-calc.x402tookit.com/duct-velocity — USDC
https://hvac-calc.x402tookit.com/efficiency-convert — USDC
https://hvac-calc.x402tookit.com/sensible-heat — USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xb531320805c5bed1d46aeadcf4f008fdf172dbda on Base · basescan ↗
Listed by facilitators Coinbase CDP · 7
Agent cardhttps://hvac-calc.x402tookit.com
Providerhttps://hvac-calc.x402tookit.com
Docshttps://hvac-calc.x402tookit.com
Discovered via
agentic_market recrawl_paid

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-21 05:31:19 404 — —

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Embed your Agenstry badge

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Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/hvac-calc.x402tookit.com.svg)](https://agenstry.com/agents/hvac-calc.x402tookit.com)
[![Verified Business](https://agenstry.com/badge/hvac-calc.x402tookit.com/identity.svg)](https://agenstry.com/agents/hvac-calc.x402tookit.com)
[![Uptime](https://agenstry.com/badge/hvac-calc.x402tookit.com/uptime.svg)](https://agenstry.com/agents/hvac-calc.x402tookit.com)
[![A2A version](https://agenstry.com/badge/hvac-calc.x402tookit.com/protocol.svg)](https://agenstry.com/agents/hvac-calc.x402tookit.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "agentic.market",
  "service": {
    "id": "hvac-calc-x402tookit-com",
    "name": "hvac-calc.x402tookit.com",
    "description": "",
    "domain": "hvac-calc.x402tookit.com",
    "provider": "hvac-calc.x402tookit.com",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base",
      "eip155:137",
      "eip155:42161",
      "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://hvac-calc.x402tookit.com/air-changes",
        "description": "Air changes per hour (ACH) from airflow and room volume, or the CFM needed for a target ACH.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "ach",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "heightFt",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "lengthFt",
            "type": "number",
            "description": "",
            "example": 20,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "widthFt",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "ventilation",
          "ach",
          "airflow"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://hvac-calc.x402tookit.com/duct-equivalent",
        "description": "Equivalent round diameter of a rectangular duct (same friction), or the second side that matches a round duct.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "sideA",
            "type": "number",
            "description": "",
            "example": 12,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "sideB",
            "type": "number",
            "description": "",
            "example": 8,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "duct",
          "sizing",
          "rectangular"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://hvac-calc.x402tookit.com/duct-velocity",
        "description": "Air velocity (FPM) and velocity pressure (in. wg) in a round or rectangular duct from CFM, or the CFM at a velocity.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "cfm",
            "type": "number",
            "description": "",
            "example": 1000,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "diameterIn",
            "type": "number",
            "description": "",
            "example": 12,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "duct",
          "velocity",
          "pressure"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://hvac-calc.x402tookit.com/efficiency-convert",
        "description": "Convert EER, COP and kW per ton, and tons, BTU/h and kW of cooling capacity.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "eer",
            "type": "number",
            "description": "",
            "example": 12,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "tons",
            "type": "number",
            "description": "",
            "example": 3,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "eer",
          "cop",
          "tons"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://hvac-calc.x402tookit.com/fan-laws",
        "description": "Fan affinity laws: new airflow, pressure and power after a speed change (flow ~ N, pressure ~ N^2, power ~ N^3).",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "cfm",
            "type": "number",
            "description": "",
            "example": 1000,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "power",
            "type": "number",
            "description": "",
            "example": 2,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "rpmFrom",
            "type": "number",
            "description": "",
            "example": 1000,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "rpmTo",
            "type": "number",
            "description": "",
            "example": 1200,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "staticPressureInWg",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "fan",
          "affinity",
          "vfd"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://hvac-calc.x402tookit.com/mixed-air",
        "description": "Mixed-air temperature of two airstreams (return plus outside air) and the outside-air fraction.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "cfmA",
            "type": "number",
            "description": "",
            "example": 3000,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "cfmB",
            "type": "number",
            "description": "",
            "example": 1000,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "tempA",
            "type": "number",
            "description": "",
            "example": 75,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "tempB",
            "type": "number",
            "description": "",
            "example": 95,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "mixing",
          "outside-air",
          "economizer"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://hvac-calc.x402tookit.com/sensible-heat",
        "description": "Sensible heat from airflow and temperature difference (1.08 x CFM x dT), or the CFM needed for a heat load.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "cfm",
            "type": "number",
            "description": "",
            "example": 1000,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "deltaTF",
            "type": "number",
            "description": "",
            "example": 20,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "HVAC Airflow & Load Calc",
        "tags": [
          "hvac",
          "airflow",
          "cooling",
          "heating"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.02",
      "maxAmount": "0.02",
      "avgCostPerTransaction": "0.02",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "HVAC Airflow & Load Calc",
    "tags": [
      "hvac",
      "ventilation",
      "ach",
      "airflow",
      "duct",
      "sizing",
      "rectangular",
      "velocity",
      "pressure",
      "eer",
      "cop",
      "tons",
      "fan",
      "affinity",
      "vfd",
      "mixing",
      "outside-air",
      "economizer",
      "cooling",
      "heating"
    ],
    "iconUrl": ""
  }
}