67trust / 100

Calc Cheops

by magent in Other

x402 APIFailing, checked 5 h ago

McGrath 1985 CHEOPS from six caller-assigned observational categories (cry 1-3; facial 0-2; child_verbal 0-2; torso, touch, and legs 1-2). magent sums only (published range 4-13) and does not observe the child. No invented analgesic cutoffs. Not a pain diagnosis or analgesic order. Not FLACC. Not BOPS.

POST

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

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 150 ms; 434 ms slowest 5%
Last check: Failed; 5 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 5 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/cheops

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/cheops
content-type: application/json

{
  "items": [
    {
      "child_verbal": 0,
      "cry": 1,
      "facial": 0,
      "legs": 1,
      "torso": 1,
      "touch": 1
    },
    {
      "child_verbal": 0,
      "cry": 1,
      "facial": 0,
      "legs": 1,
      "torso": 1,
      "touch": 1
    }
  ]
}

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, 122 lines

{
  "count": 2,
  "items": [
    {
      "child_verbal": 0,
      "citation": {
        "authors": "McGrath PJ, Johnson G, Goodman JT, Schillinger J, Dunn J, Chapman J",
        "doi": "10.1016/0304-3959(84)90167-2",
        "id": "mcgrath-1985",
        "source": "In: Fields HL, ed. Advances in Pain Research and Therapy. Vol 9. New York: Raven Press; 1985:395-402",
        "title": "CHEOPS: a behavioral scale for rating postoperative pain in children"
      },
      "components": [
        {
          "factor": "cry",
          "points": 1,
          "present": true,
          "value": 1
        },
        {
          "factor": "facial",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "child_verbal",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "torso",
          "points": 1,
          "present": true,
          "value": 1
        },
        {
          "factor": "touch",
          "points": 1,
          "present": true,
          "value": 1
        },
        {
          "factor": "legs",
          "points": 1,
          "present": true,
          "value": 1
        }
      ],
      "cry": 1,
      "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.",
      "facial": 0,
      "formula": "cheops",
      "formula_expression": "CHEOPS = cry + facial + child_verbal + torso + touch + legs; McGrath 1985 published integers; min 4, max 13",
      "legs": 1,
      "max_score": 13,
      "score": 4,
      "torso": 1,
      "touch": 1
    },
    {
      "child_verbal": 0,
      "citation": {
        "authors": "McGrath PJ, Johnson G, Goodman JT, Schillinger J, Dunn J, Chapman J",
        "doi": "10.1016/0304-3959(84)90167-2",
        "id": "mcgrath-1985",
        "source": "In: Fields HL, ed. Advances in Pain Research and Therapy. Vol 9. New York: Raven Press; 1985:395-402",
        "title": "CHEOPS: a behavioral scale for rating postoperative pain in children"
      },
      "components": [
        {
          "factor": "cry",
          "points": 1,
          "present": true,
          "value": 1
        },
        {
          "factor": "facial",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "child_verbal",
          "points": 0,
          "present": true,
          "value": 0
        },
        {
          "factor": "torso",
          "points": 1,
          "present": true,
          "value": 1
        },
        {
          "factor": "touch",
          "points": 1,
          "present": true,
          "value": 1
        },
        {
          "factor": "legs",
          "points": 1,
          "present": true,
          "value": 1
        }
      ],
      "cry": 1,
      "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.",
      "facial": 0,
      "formula": "cheops",
      "formula_expression": "CHEOPS = cry + facial + child_verbal + torso + touch + legs; McGrath 1985 published integers; min 4, max 13",
      "legs": 1,
      "max_score": 13,
      "score": 4,
      "torso": 1,
      "touch": 1
    }
  ],
  "path": "/api/calc/cheops"
}

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/cheops' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"child_verbal":0,"cry":1,"facial":0,"legs":1,"torso":1,"touch":1},{"child_verbal":0,"cry":1,"facial":0,"legs":1,"torso":1,"touch":1}]}'

# 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/cheops' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"child_verbal":0,"cry":1,"facial":0,"legs":1,"torso":1,"touch":1},{"child_verbal":0,"cry":1,"facial":0,"legs":1,"torso":1,"touch":1}]}' \
  | 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%2Fcheops&method=POST
const res = await pay("https://api.magentlab.com/api/calc/cheops", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "child_verbal": 0,
        "cry": 1,
        "facial": 0,
        "legs": 1,
        "torso": 1,
        "touch": 1
      },
      {
        "child_verbal": 0,
        "cry": 1,
        "facial": 0,
        "legs": 1,
        "torso": 1,
        "touch": 1
      }
    ]
  }),
});
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/cheops",
        json={
            "items": [
                {
                    "child_verbal": 0,
                    "cry": 1,
                    "facial": 0,
                    "legs": 1,
                    "torso": 1,
                    "touch": 1,
                },
                {
                    "child_verbal": 0,
                    "cry": 1,
                    "facial": 0,
                    "legs": 1,
                    "torso": 1,
                    "touch": 1,
                },
            ],
        },
    )
    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
5 h ago	Timed out	-	-	-
10 h ago	Timed out	-	-	-
14 h ago	Timed out	-	-	-
19 h ago	Passed	402	148 ms	$0.007
24 h ago	Passed	402	136 ms	$0.007

Show 10 older checks

29 h ago	Passed	402	144 ms	$0.007
33 h ago	Passed	402	152 ms	$0.007
38 h ago	Passed	402	153 ms	$0.007
42 h ago	Passed	402	177 ms	$0.007
47 h ago	Passed	402	157 ms	$0.007
2 days ago	Passed	402	434 ms	$0.007
2 days ago	Passed	402	229 ms	$0.007
2 days ago	Passed	402	442 ms	$0.007
3 days ago	Passed	402	136 ms	$0.007
3 days ago	Passed	402	298 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-cheops.svg)](https://toolvet.app/s/calc-cheops)