62trust / 100

Calc Chip

by magent in Other

x402 APIFailing, checked 7 h ago

Smits 2007 CHIP rule (adults ≥16, GCS 13-15). CT if ≥1 major (pedestrian/cyclist vs vehicle, ejected, vomiting, PTA ≥4 h, skull-fracture signs, GCS <15, GCS drop ≥2 at 1 h, anticoagulants, posttraumatic seizure, age ≥60) or ≥2 minor (fall from elevation, persistent anterograde amnesia, PTA 2 to <4 h, skull contusion, neurologic deficit, LOC, GCS drop of 1 at 1 h, age 40-60). Not a diagnosis; not Canadian CT Head, NEXUS, PECARN, or 2022 CHIP. magent does not examine the patient.

POST

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

Price: $0.007; per call in USDC
Uptime: 91.3%; last 30 days
Response time: 299 ms; 506 ms slowest 5%
Last check: Failed; 7 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 7 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/chip

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/chip
content-type: application/json

{
  "items": [
    {
      "age": 30,
      "anticoagulant_therapy": false,
      "clinical_signs_skull_fracture": false,
      "ejected_from_vehicle": false,
      "fall_from_any_elevation": false,
      "gcs": 15,
      "gcs_deterioration_1": false,
      "gcs_deterioration_ge_2": false,
      "loss_of_consciousness": false,
      "neurologic_deficit": false,
      "pedestrian_or_cyclist_vs_vehicle": false,
      "persistent_anterograde_amnesia": false,
      "posttraumatic_seizure": false,
      "pta_2_to_lt_4h": false,
      "pta_ge_4h": false,
      "skull_contusion": false,
      "vomiting": false
    },
    {
      "age": 30,
      "anticoagulant_therapy": false,
      "clinical_signs_skull_fracture": false,
      "ejected_from_vehicle": false,
      "fall_from_any_elevation": false,
      "gcs": 15,
      "gcs_deterioration_1": false,
      "gcs_deterioration_ge_2": false,
      "loss_of_consciousness": false,
      "neurologic_deficit": false,
      "pedestrian_or_cyclist_vs_vehicle": false,
      "persistent_anterograde_amnesia": false,
      "posttraumatic_seizure": false,
      "pta_2_to_lt_4h": false,
      "pta_ge_4h": false,
      "skull_contusion": false,
      "vomiting": 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, 196 lines

{
  "count": 2,
  "items": [
    {
      "age_years": 30,
      "citation": {
        "authors": "Smits M, Dippel DW, Steyerberg EW, et al.",
        "doi": "10.7326/0003-4819-146-6-200703200-00004",
        "id": "smits-2007",
        "pmid": "17371884",
        "source": "Ann Intern Med. 2007;146(6):397-405",
        "title": "Predicting intracranial traumatic findings on computed tomography in patients with minor head injury: the CHIP prediction rule"
      },
      "criteria": [
        {
          "factor": "pedestrian_or_cyclist_vs_vehicle",
          "met": false
        },
        {
          "factor": "ejected_from_vehicle",
          "met": false
        },
        {
          "factor": "vomiting",
          "met": false
        },
        {
          "factor": "pta_ge_4h",
          "met": false
        },
        {
          "factor": "clinical_signs_skull_fracture",
          "met": false
        },
        {
          "factor": "gcs_lt_15",
          "met": false,
          "value": 15
        },
        {
          "factor": "gcs_deterioration_ge_2",
          "met": false
        },
        {
          "factor": "anticoagulant_therapy",
          "met": false
        },
        {
          "factor": "posttraumatic_seizure",
          "met": false
        },
        {
          "factor": "age_ge_60",
          "met": false,
          "value": 30
        },
        {
          "factor": "fall_from_any_elevation",
          "met": false
        },
        {
          "factor": "persistent_anterograde_amnesia",
          "met": false
        },
        {
          "factor": "pta_2_to_lt_4h",
          "met": false
        },
        {
          "factor": "skull_contusion",
          "met": false
        },
        {
          "factor": "neurologic_deficit",
          "met": false
        },
        {
          "factor": "loss_of_consciousness",
          "met": false
        },
        {
          "factor": "gcs_deterioration_1",
          "met": false
        },
        {
          "factor": "age_40_to_60",
          "met": false,
          "value": 30
        }
      ],
      "ct_indicated": 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": "chip",
      "formula_expression": "ct indicated if ≥1 major (pedestrian_or_cyclist_vs_vehicle, ejected_from_vehicle, vomiting, pta_ge_4h, clinical_signs_skull_fracture, gcs < 15, gcs_deterioration_ge_2, anticoagulant_therapy, posttraumatic_seizure, age ≥ 60) or ≥2 minor (fall_from_any_elevation, persistent_anterograde_amnesia, pta_2_to_lt_4h, skull_contusion, neurologic_deficit, loss_of_consciousness, gcs_deterioration_1, age 40-60)",
      "gcs": 15,
      "major_count": 0,
      "minor_count": 0
    },
    {
      "age_years": 30,
      "citation": {
        "authors": "Smits M, Dippel DW, Steyerberg EW, et al.",
        "doi": "10.7326/0003-4819-146-6-200703200-00004",
        "id": "smits-2007",
        "pmid": "17371884",
        "source": "Ann Intern Med. 2007;146(6):397-405",
        "title": "Predicting intracranial traumatic findings on computed tomography in patients with minor head injury: the CHIP prediction rule"
      },
      "criteria": [
        {
          "factor": "pedestrian_or_cyclist_vs_vehicle",
          "met": false
        },
        {
          "factor": "ejected_from_vehicle",
          "met": false
        },
        {
          "factor": "vomiting",
          "met": false
        },
        {
          "factor": "pta_ge_4h",
          "met": false
        },
        {
          "factor": "clinical_signs_skull_fracture",
          "met": false
        },
        {
          "factor": "gcs_lt_15",
          "met": false,
          "value": 15
        },
        {
          "factor": "gcs_deterioration_ge_2",
          "met": false
        },
        {
          "factor": "anticoagulant_therapy",
          "met": false
        },
        {
          "factor": "posttraumatic_seizure",
          "met": false
        },
        {
          "factor": "age_ge_60",
          "met": false,
          "value": 30
        },
        {
          "factor": "fall_from_any_elevation",
          "met": false
        },
        {
          "factor": "persistent_anterograde_amnesia",
          "met": false
        },
        {
          "factor": "pta_2_to_lt_4h",
          "met": false
        },
        {
          "factor": "skull_contusion",
          "met": false
        },
        {
          "factor": "neurologic_deficit",
          "met": false
        },
        {
          "factor": "loss_of_consciousness",
          "met": false
        },
        {
          "factor": "gcs_deterioration_1",
          "met": false
        },
        {
          "factor": "age_40_to_60",
          "met": false,
          "value": 30
        }
      ],
      "ct_indicated": 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": "chip",
      "formula_expression": "ct indicated if ≥1 major (pedestrian_or_cyclist_vs_vehicle, ejected_from_vehicle, vomiting, pta_ge_4h, clinical_signs_skull_fracture, gcs < 15, gcs_deterioration_ge_2, anticoagulant_therapy, posttraumatic_seizure, age ≥ 60) or ≥2 minor (fall_from_any_elevation, persistent_anterograde_amnesia, pta_2_to_lt_4h, skull_contusion, neurologic_deficit, loss_of_consciousness, gcs_deterioration_1, age 40-60)",
      "gcs": 15,
      "major_count": 0,
      "minor_count": 0
    }
  ],
  "path": "/api/calc/chip"
}

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/chip' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":30,"anticoagulant_therapy":false,"clinical_signs_skull_fracture":false,"ejected_from_vehicle":false,"fall_from_any_elevation":false,"gcs":15,"gcs_deterioration_1":false,"gcs_deterioration_ge_2":false,"loss_of_consciousness":false,"neurologic_deficit":false,"pedestrian_or_cyclist_vs_vehicle":false,"persistent_anterograde_amnesia":false,"posttraumatic_seizure":false,"pta_2_to_lt_4h":false,"pta_ge_4h":false,"skull_contusion":false,"vomiting":false},{"age":30,"anticoagulant_therapy":false,"clinical_signs_skull_fracture":false,"ejected_from_vehicle":false,"fall_from_any_elevation":false,"gcs":15,"gcs_deterioration_1":false,"gcs_deterioration_ge_2":false,"loss_of_consciousness":false,"neurologic_deficit":false,"pedestrian_or_cyclist_vs_vehicle":false,"persistent_anterograde_amnesia":false,"posttraumatic_seizure":false,"pta_2_to_lt_4h":false,"pta_ge_4h":false,"skull_contusion":false,"vomiting":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/chip' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":30,"anticoagulant_therapy":false,"clinical_signs_skull_fracture":false,"ejected_from_vehicle":false,"fall_from_any_elevation":false,"gcs":15,"gcs_deterioration_1":false,"gcs_deterioration_ge_2":false,"loss_of_consciousness":false,"neurologic_deficit":false,"pedestrian_or_cyclist_vs_vehicle":false,"persistent_anterograde_amnesia":false,"posttraumatic_seizure":false,"pta_2_to_lt_4h":false,"pta_ge_4h":false,"skull_contusion":false,"vomiting":false},{"age":30,"anticoagulant_therapy":false,"clinical_signs_skull_fracture":false,"ejected_from_vehicle":false,"fall_from_any_elevation":false,"gcs":15,"gcs_deterioration_1":false,"gcs_deterioration_ge_2":false,"loss_of_consciousness":false,"neurologic_deficit":false,"pedestrian_or_cyclist_vs_vehicle":false,"persistent_anterograde_amnesia":false,"posttraumatic_seizure":false,"pta_2_to_lt_4h":false,"pta_ge_4h":false,"skull_contusion":false,"vomiting":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%2Fchip&method=POST
const res = await pay("https://api.magentlab.com/api/calc/chip", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 30,
        "anticoagulant_therapy": false,
        "clinical_signs_skull_fracture": false,
        "ejected_from_vehicle": false,
        "fall_from_any_elevation": false,
        "gcs": 15,
        "gcs_deterioration_1": false,
        "gcs_deterioration_ge_2": false,
        "loss_of_consciousness": false,
        "neurologic_deficit": false,
        "pedestrian_or_cyclist_vs_vehicle": false,
        "persistent_anterograde_amnesia": false,
        "posttraumatic_seizure": false,
        "pta_2_to_lt_4h": false,
        "pta_ge_4h": false,
        "skull_contusion": false,
        "vomiting": false
      },
      {
        "age": 30,
        "anticoagulant_therapy": false,
        "clinical_signs_skull_fracture": false,
        "ejected_from_vehicle": false,
        "fall_from_any_elevation": false,
        "gcs": 15,
        "gcs_deterioration_1": false,
        "gcs_deterioration_ge_2": false,
        "loss_of_consciousness": false,
        "neurologic_deficit": false,
        "pedestrian_or_cyclist_vs_vehicle": false,
        "persistent_anterograde_amnesia": false,
        "posttraumatic_seizure": false,
        "pta_2_to_lt_4h": false,
        "pta_ge_4h": false,
        "skull_contusion": false,
        "vomiting": 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/chip",
        json={
            "items": [
                {
                    "age": 30,
                    "anticoagulant_therapy": False,
                    "clinical_signs_skull_fracture": False,
                    "ejected_from_vehicle": False,
                    "fall_from_any_elevation": False,
                    "gcs": 15,
                    "gcs_deterioration_1": False,
                    "gcs_deterioration_ge_2": False,
                    "loss_of_consciousness": False,
                    "neurologic_deficit": False,
                    "pedestrian_or_cyclist_vs_vehicle": False,
                    "persistent_anterograde_amnesia": False,
                    "posttraumatic_seizure": False,
                    "pta_2_to_lt_4h": False,
                    "pta_ge_4h": False,
                    "skull_contusion": False,
                    "vomiting": False,
                },
                {
                    "age": 30,
                    "anticoagulant_therapy": False,
                    "clinical_signs_skull_fracture": False,
                    "ejected_from_vehicle": False,
                    "fall_from_any_elevation": False,
                    "gcs": 15,
                    "gcs_deterioration_1": False,
                    "gcs_deterioration_ge_2": False,
                    "loss_of_consciousness": False,
                    "neurologic_deficit": False,
                    "pedestrian_or_cyclist_vs_vehicle": False,
                    "persistent_anterograde_amnesia": False,
                    "posttraumatic_seizure": False,
                    "pta_2_to_lt_4h": False,
                    "pta_ge_4h": False,
                    "skull_contusion": False,
                    "vomiting": 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
7 h ago	Timed out	-	-	-
18 h ago	Timed out	-	-	-
28 h ago	Passed	402	182 ms	$0.007
37 h ago	Passed	402	464 ms	$0.007
47 h ago	Passed	402	152 ms	$0.007

Show 10 older checks

2 days ago	Passed	402	259 ms	$0.007
3 days ago	Passed	402	336 ms	$0.007
3 days ago	Passed	402	180 ms	$0.007
3 days ago	Passed	402	333 ms	$0.007
3 days ago	Passed	402	317 ms	$0.007
3 days ago	Passed	402	221 ms	$0.007
3 days ago	Passed	402	339 ms	$0.007
4 days ago	Passed	402	241 ms	$0.007
4 days ago	Passed	402	299 ms	$0.007
4 days ago	Passed	402	476 ms	$0.007

History

12 Oct 2026	Price changed from $0.005 to $0.007

Trust score 62/ 100

Availability (30-day uptime)		27 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		0 / 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

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Trust score

[![ToolVet trust score](https://toolvet.app/badge/calc-chip-2.svg)](https://toolvet.app/s/calc-chip-2)