67trust / 100

Calc Denver Bcvi

x402 APIFailing, checked 2 h ago

Modified Denver BCVI (Cothren 2005). Positive if any sign (arterial hemorrhage; cervical bruit age <50; expanding cervical hematoma; focal deficit; neuro exam incongruous with head CT; stroke on secondary CT) or any risk factor (LeFort II/III; C-spine subluxation, transverse foramen, or C1-C3; basilar skull with carotid canal; DAI with GCS <6; near hanging with anoxia). Imaging indicated when positive. Not Biffl grade, expanded Denver, NEXUS, or Canadian C-spine. magent does not read CTA.

POST

https://api.magentlab.com/api/calc/denver_bcvi

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 233 ms; 566 ms slowest 5%
Last check: Failed; 2 h ago, next any minute now

Run a free test call How to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 2 h ago: Timed out

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.magentlab.com/api/calc/denver_bcvi

Each call costs $0.007 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.magentlab.com/api/calc/denver_bcvi
content-type: application/json

{
  "items": [
    {
      "arterial_hemorrhage": false,
      "basilar_skull_fracture_carotid_canal": false,
      "cervical_bruit_age_lt_50": false,
      "cspine_subluxation_transverse_foramen_or_c1_c3": false,
      "dai_gcs_lt_6": false,
      "expanding_cervical_hematoma": false,
      "focal_neuro_deficit": false,
      "lefort_ii_or_iii": false,
      "near_hanging_anoxic_brain_injury": false,
      "neuro_exam_incongruous_head_ct": false,
      "stroke_on_secondary_ct": false
    },
    {
      "arterial_hemorrhage": false,
      "basilar_skull_fracture_carotid_canal": false,
      "cervical_bruit_age_lt_50": false,
      "cspine_subluxation_transverse_foramen_or_c1_c3": false,
      "dai_gcs_lt_6": false,
      "expanding_cervical_hematoma": false,
      "focal_neuro_deficit": false,
      "lefort_ii_or_iii": false,
      "near_hanging_anoxic_brain_injury": false,
      "neuro_exam_incongruous_head_ct": false,
      "stroke_on_secondary_ct": false
    }
  ]
}

Parameters

Parameter	Type	Required	Description
`items`	array of object	Yes

Example response

The provider's example. We can't check it without paying.

Example response, 132 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Cothren CC, Moore EE",
        "doi": "10.1590/S1807-59322005000600011",
        "id": "cothren-2005",
        "pmid": "16358138",
        "source": "Clinics (Sao Paulo). 2005;60(6):489-496",
        "title": "Blunt cerebrovascular injuries"
      },
      "criteria": [
        {
          "factor": "arterial_hemorrhage",
          "met": false
        },
        {
          "factor": "cervical_bruit_age_lt_50",
          "met": false
        },
        {
          "factor": "expanding_cervical_hematoma",
          "met": false
        },
        {
          "factor": "focal_neuro_deficit",
          "met": false
        },
        {
          "factor": "neuro_exam_incongruous_head_ct",
          "met": false
        },
        {
          "factor": "stroke_on_secondary_ct",
          "met": false
        },
        {
          "factor": "lefort_ii_or_iii",
          "met": false
        },
        {
          "factor": "cspine_subluxation_transverse_foramen_or_c1_c3",
          "met": false
        },
        {
          "factor": "basilar_skull_fracture_carotid_canal",
          "met": false
        },
        {
          "factor": "dai_gcs_lt_6",
          "met": false
        },
        {
          "factor": "near_hanging_anoxic_brain_injury",
          "met": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "denver_bcvi",
      "formula_expression": "screen positive iff any published sign (arterial hemorrhage, cervical bruit age <50, expanding cervical hematoma, focal neurologic deficit, neurologic exam incongruous with head CT, or stroke on secondary CT) or any published high-energy risk factor (LeFort II or III, C-spine subluxation or transverse-foramen or C1-C3 fracture, basilar skull fracture with carotid canal, DAI with GCS <6, or near hanging with anoxic brain injury); imaging indicated when screen positive",
      "imaging_indicated": false,
      "risk_factor_positive": false,
      "screen_positive": false,
      "sign_positive": false
    },
    {
      "citation": {
        "authors": "Cothren CC, Moore EE",
        "doi": "10.1590/S1807-59322005000600011",
        "id": "cothren-2005",
        "pmid": "16358138",
        "source": "Clinics (Sao Paulo). 2005;60(6):489-496",
        "title": "Blunt cerebrovascular injuries"
      },
      "criteria": [
        {
          "factor": "arterial_hemorrhage",
          "met": false
        },
        {
          "factor": "cervical_bruit_age_lt_50",
          "met": false
        },
        {
          "factor": "expanding_cervical_hematoma",
          "met": false
        },
        {
          "factor": "focal_neuro_deficit",
          "met": false
        },
        {
          "factor": "neuro_exam_incongruous_head_ct",
          "met": false
        },
        {
          "factor": "stroke_on_secondary_ct",
          "met": false
        },
        {
          "factor": "lefort_ii_or_iii",
          "met": false
        },
        {
          "factor": "cspine_subluxation_transverse_foramen_or_c1_c3",
          "met": false
        },
        {
          "factor": "basilar_skull_fracture_carotid_canal",
          "met": false
        },
        {
          "factor": "dai_gcs_lt_6",
          "met": false
        },
        {
          "factor": "near_hanging_anoxic_brain_injury",
          "met": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "denver_bcvi",
      "formula_expression": "screen positive iff any published sign (arterial hemorrhage, cervical bruit age <50, expanding cervical hematoma, focal neurologic deficit, neurologic exam incongruous with head CT, or stroke on secondary CT) or any published high-energy risk factor (LeFort II or III, C-spine subluxation or transverse-foramen or C1-C3 fracture, basilar skull fracture with carotid canal, DAI with GCS <6, or near hanging with anoxic brain injury); imaging indicated when screen positive",
      "imaging_indicated": false,
      "risk_factor_positive": false,
      "screen_positive": false,
      "sign_positive": false
    }
  ],
  "path": "/api/calc/denver_bcvi"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

curl: see the payment challenge

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/denver_bcvi' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"arterial_hemorrhage":false,"basilar_skull_fracture_carotid_canal":false,"cervical_bruit_age_lt_50":false,"cspine_subluxation_transverse_foramen_or_c1_c3":false,"dai_gcs_lt_6":false,"expanding_cervical_hematoma":false,"focal_neuro_deficit":false,"lefort_ii_or_iii":false,"near_hanging_anoxic_brain_injury":false,"neuro_exam_incongruous_head_ct":false,"stroke_on_secondary_ct":false},{"arterial_hemorrhage":false,"basilar_skull_fracture_carotid_canal":false,"cervical_bruit_age_lt_50":false,"cspine_subluxation_transverse_foramen_or_c1_c3":false,"dai_gcs_lt_6":false,"expanding_cervical_hematoma":false,"focal_neuro_deficit":false,"lefort_ii_or_iii":false,"near_hanging_anoxic_brain_injury":false,"neuro_exam_incongruous_head_ct":false,"stroke_on_secondary_ct":false}]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.magentlab.com/api/calc/denver_bcvi' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"arterial_hemorrhage":false,"basilar_skull_fracture_carotid_canal":false,"cervical_bruit_age_lt_50":false,"cspine_subluxation_transverse_foramen_or_c1_c3":false,"dai_gcs_lt_6":false,"expanding_cervical_hematoma":false,"focal_neuro_deficit":false,"lefort_ii_or_iii":false,"near_hanging_anoxic_brain_injury":false,"neuro_exam_incongruous_head_ct":false,"stroke_on_secondary_ct":false},{"arterial_hemorrhage":false,"basilar_skull_fracture_carotid_canal":false,"cervical_bruit_age_lt_50":false,"cspine_subluxation_transverse_foramen_or_c1_c3":false,"dai_gcs_lt_6":false,"expanding_cervical_hematoma":false,"focal_neuro_deficit":false,"lefort_ii_or_iii":false,"near_hanging_anoxic_brain_injury":false,"neuro_exam_incongruous_head_ct":false,"stroke_on_secondary_ct":false}]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

JavaScript: pay and call

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fdenver_bcvi&method=POST
const res = await pay("https://api.magentlab.com/api/calc/denver_bcvi", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "arterial_hemorrhage": false,
        "basilar_skull_fracture_carotid_canal": false,
        "cervical_bruit_age_lt_50": false,
        "cspine_subluxation_transverse_foramen_or_c1_c3": false,
        "dai_gcs_lt_6": false,
        "expanding_cervical_hematoma": false,
        "focal_neuro_deficit": false,
        "lefort_ii_or_iii": false,
        "near_hanging_anoxic_brain_injury": false,
        "neuro_exam_incongruous_head_ct": false,
        "stroke_on_secondary_ct": false
      },
      {
        "arterial_hemorrhage": false,
        "basilar_skull_fracture_carotid_canal": false,
        "cervical_bruit_age_lt_50": false,
        "cspine_subluxation_transverse_foramen_or_c1_c3": false,
        "dai_gcs_lt_6": false,
        "expanding_cervical_hematoma": false,
        "focal_neuro_deficit": false,
        "lefort_ii_or_iii": false,
        "near_hanging_anoxic_brain_injury": false,
        "neuro_exam_incongruous_head_ct": false,
        "stroke_on_secondary_ct": false
      }
    ]
  }),
});
console.log(res.status, await res.text());

Python: pay and call

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.magentlab.com/api/calc/denver_bcvi",
        json={
            "items": [
                {
                    "arterial_hemorrhage": False,
                    "basilar_skull_fracture_carotid_canal": False,
                    "cervical_bruit_age_lt_50": False,
                    "cspine_subluxation_transverse_foramen_or_c1_c3": False,
                    "dai_gcs_lt_6": False,
                    "expanding_cervical_hematoma": False,
                    "focal_neuro_deficit": False,
                    "lefort_ii_or_iii": False,
                    "near_hanging_anoxic_brain_injury": False,
                    "neuro_exam_incongruous_head_ct": False,
                    "stroke_on_secondary_ct": False,
                },
                {
                    "arterial_hemorrhage": False,
                    "basilar_skull_fracture_carotid_canal": False,
                    "cervical_bruit_age_lt_50": False,
                    "cspine_subluxation_transverse_foramen_or_c1_c3": False,
                    "dai_gcs_lt_6": False,
                    "expanding_cervical_hematoma": False,
                    "focal_neuro_deficit": False,
                    "lefort_ii_or_iii": False,
                    "near_hanging_anoxic_brain_injury": False,
                    "neuro_exam_incongruous_head_ct": False,
                    "stroke_on_secondary_ct": False,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

1 finding

Charges more than its listed price in payment
Listed at $0.005, charges $0.007

Recent checks

When	Result	HTTP	Time	Price
2 h ago	Timed out	-	-	-
7 h ago	Timed out	-	-	-
12 h ago	Timed out	-	-	-
17 h ago	Passed	402	151 ms	$0.007
22 h ago	Passed	402	290 ms	$0.007

Show 10 older checks

26 h ago	Passed	402	2.0 s	$0.007
31 h ago	Passed	402	154 ms	$0.007
36 h ago	Passed	402	386 ms	$0.007
40 h ago	Passed	402	174 ms	$0.007
45 h ago	Passed	402	284 ms	$0.007
2 days ago	Passed	402	271 ms	$0.007
2 days ago	Passed	402	416 ms	$0.007
2 days ago	Passed	402	190 ms	$0.007
3 days ago	Passed	402	212 ms	$0.007
3 days ago	Passed	402	233 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 67/ 100

Availability (30-day uptime)		27 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		5 / 15
Charges what it lists		0 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.007 per call
Listed at: $0.005 (charges more)
Token: USDC
Networks: Base
Pays to: 0x836B…9Ee2

Real usage

Paying agents: 2 in 30 days
Paid calls: 5 in 30 days
Last paid call: 5 days ago

Source: x402 Bazaar settlement data.

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Trust score

[![ToolVet trust score](https://toolvet.app/badge/calc-denver-bcvi.svg)](https://toolvet.app/s/calc-denver-bcvi)