77trust / 100

Calc Glasgow Blatchford

x402 APIPassing, checked 4 h ago

Glasgow-Blatchford score (Blatchford 2000) for need for treatment after upper-gastrointestinal haemorrhage. Points from urea, haemoglobin (sex-specific), systolic BP, heart rate ≥100, melena, syncope, hepatic disease, and cardiac failure; max 23. Score 0 is the published low-risk screen; magent does not invent other GBS bands. Not a diagnosis, not Rockall, and not AIMS65. Urea may be mmol/L or BUN mg/dL; haemoglobin g/L or g/dL.

POST

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

Price: $0.005; per call in USDC
Uptime: 96.5%; last 30 days
Response time: 243 ms; 502 ms slowest 5%
Last check: Passed; 4 h ago, next any minute now

Run a free test call How to call it

Reliability

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

How to call it

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

Each call costs $0.005 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/glasgow_blatchford
content-type: application/json

{
  "items": [
    {
      "bun_mg_dl": 14,
      "cardiac_failure": false,
      "heart_rate_bpm": 80,
      "hemoglobin_g_dl": 14,
      "hemoglobin_g_l": 140,
      "hepatic_disease": false,
      "melena": false,
      "sex": "male",
      "syncope": false,
      "systolic_mm_hg": 120,
      "urea_mmol_l": 5
    },
    {
      "bun_mg_dl": 14,
      "cardiac_failure": false,
      "heart_rate_bpm": 80,
      "hemoglobin_g_dl": 14,
      "hemoglobin_g_l": 140,
      "hepatic_disease": false,
      "melena": false,
      "sex": "male",
      "syncope": false,
      "systolic_mm_hg": 120,
      "urea_mmol_l": 5
    }
  ]
}

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, 138 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Blatchford O, Murray WR, Blatchford M",
        "doi": "10.1016/S0140-6736(00)02816-6",
        "id": "blatchford-2000",
        "source": "Lancet. 2000;356(9238):1318-1321",
        "title": "A risk score to predict need for treatment for upper-gastrointestinal haemorrhage"
      },
      "components": [
        {
          "factor": "urea",
          "points": 0,
          "present": false,
          "value": 5
        },
        {
          "factor": "hemoglobin",
          "points": 0,
          "present": false,
          "value": 140
        },
        {
          "factor": "systolic",
          "points": 0,
          "present": false,
          "value": 120
        },
        {
          "factor": "heart_rate",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "melena",
          "points": 0,
          "present": false
        },
        {
          "factor": "syncope",
          "points": 0,
          "present": false
        },
        {
          "factor": "hepatic_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "cardiac_failure",
          "points": 0,
          "present": 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": "glasgow_blatchford",
      "formula_expression": "GBS = urea_mmol_l table + haemoglobin_g_l table (sex-specific) + systolic_mm_hg table + (heart_rate_bpm >= 100) + melena + 2*syncope + 2*hepatic_disease + 2*cardiac_failure; max 23; score 0 low, else not_low",
      "gbs_risk": "low",
      "heart_rate_bpm": 80,
      "hemoglobin_g_l": 140,
      "max_score": 23,
      "score": 0,
      "sex": "male",
      "systolic_mm_hg": 120,
      "urea_mmol_l": 5
    },
    {
      "citation": {
        "authors": "Blatchford O, Murray WR, Blatchford M",
        "doi": "10.1016/S0140-6736(00)02816-6",
        "id": "blatchford-2000",
        "source": "Lancet. 2000;356(9238):1318-1321",
        "title": "A risk score to predict need for treatment for upper-gastrointestinal haemorrhage"
      },
      "components": [
        {
          "factor": "urea",
          "points": 0,
          "present": false,
          "value": 5
        },
        {
          "factor": "hemoglobin",
          "points": 0,
          "present": false,
          "value": 140
        },
        {
          "factor": "systolic",
          "points": 0,
          "present": false,
          "value": 120
        },
        {
          "factor": "heart_rate",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "melena",
          "points": 0,
          "present": false
        },
        {
          "factor": "syncope",
          "points": 0,
          "present": false
        },
        {
          "factor": "hepatic_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "cardiac_failure",
          "points": 0,
          "present": 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": "glasgow_blatchford",
      "formula_expression": "GBS = urea_mmol_l table + haemoglobin_g_l table (sex-specific) + systolic_mm_hg table + (heart_rate_bpm >= 100) + melena + 2*syncope + 2*hepatic_disease + 2*cardiac_failure; max 23; score 0 low, else not_low",
      "gbs_risk": "low",
      "heart_rate_bpm": 80,
      "hemoglobin_g_l": 140,
      "max_score": 23,
      "score": 0,
      "sex": "male",
      "systolic_mm_hg": 120,
      "urea_mmol_l": 5
    }
  ],
  "path": "/api/calc/glasgow_blatchford"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

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/glasgow_blatchford' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bun_mg_dl":14,"cardiac_failure":false,"heart_rate_bpm":80,"hemoglobin_g_dl":14,"hemoglobin_g_l":140,"hepatic_disease":false,"melena":false,"sex":"male","syncope":false,"systolic_mm_hg":120,"urea_mmol_l":5},{"bun_mg_dl":14,"cardiac_failure":false,"heart_rate_bpm":80,"hemoglobin_g_dl":14,"hemoglobin_g_l":140,"hepatic_disease":false,"melena":false,"sex":"male","syncope":false,"systolic_mm_hg":120,"urea_mmol_l":5}]}'

# 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/glasgow_blatchford' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bun_mg_dl":14,"cardiac_failure":false,"heart_rate_bpm":80,"hemoglobin_g_dl":14,"hemoglobin_g_l":140,"hepatic_disease":false,"melena":false,"sex":"male","syncope":false,"systolic_mm_hg":120,"urea_mmol_l":5},{"bun_mg_dl":14,"cardiac_failure":false,"heart_rate_bpm":80,"hemoglobin_g_dl":14,"hemoglobin_g_l":140,"hepatic_disease":false,"melena":false,"sex":"male","syncope":false,"systolic_mm_hg":120,"urea_mmol_l":5}]}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fglasgow_blatchford&method=POST
const res = await pay("https://api.magentlab.com/api/calc/glasgow_blatchford", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "bun_mg_dl": 14,
        "cardiac_failure": false,
        "heart_rate_bpm": 80,
        "hemoglobin_g_dl": 14,
        "hemoglobin_g_l": 140,
        "hepatic_disease": false,
        "melena": false,
        "sex": "male",
        "syncope": false,
        "systolic_mm_hg": 120,
        "urea_mmol_l": 5
      },
      {
        "bun_mg_dl": 14,
        "cardiac_failure": false,
        "heart_rate_bpm": 80,
        "hemoglobin_g_dl": 14,
        "hemoglobin_g_l": 140,
        "hepatic_disease": false,
        "melena": false,
        "sex": "male",
        "syncope": false,
        "systolic_mm_hg": 120,
        "urea_mmol_l": 5
      }
    ]
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
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/glasgow_blatchford",
        json={
            "items": [
                {
                    "bun_mg_dl": 14,
                    "cardiac_failure": False,
                    "heart_rate_bpm": 80,
                    "hemoglobin_g_dl": 14,
                    "hemoglobin_g_l": 140,
                    "hepatic_disease": False,
                    "melena": False,
                    "sex": "male",
                    "syncope": False,
                    "systolic_mm_hg": 120,
                    "urea_mmol_l": 5,
                },
                {
                    "bun_mg_dl": 14,
                    "cardiac_failure": False,
                    "heart_rate_bpm": 80,
                    "hemoglobin_g_dl": 14,
                    "hemoglobin_g_l": 140,
                    "hepatic_disease": False,
                    "melena": False,
                    "sex": "male",
                    "syncope": False,
                    "systolic_mm_hg": 120,
                    "urea_mmol_l": 5,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

When	Result	HTTP	Time	Price
4 h ago	Passed	402	138 ms	$0.005
9 h ago	Passed	402	223 ms	$0.005
13 h ago	Passed	402	481 ms	$0.005
18 h ago	Passed	402	480 ms	$0.005
22 h ago	Passed	402	145 ms	$0.005

Show 10 older checks

26 h ago	Passed	402	207 ms	$0.005
30 h ago	Passed	402	179 ms	$0.005
34 h ago	Passed	402	228 ms	$0.005
38 h ago	Timed out	-	-	-
43 h ago	Passed	402	303 ms	$0.005
47 h ago	Passed	402	259 ms	$0.005
2 days ago	Passed	402	401 ms	$0.005
2 days ago	Passed	402	563 ms	$0.005
2 days ago	Passed	402	166 ms	$0.005
3 days ago	Passed	402	168 ms	$0.005

Trust score 77/ 100

Availability (30-day uptime)		29 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		3 / 15
Charges what it lists		10 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.005 per call
Listed at: $0.005
Token: USDC
Networks: Base
Pays to: 0x836B…9Ee2

Real usage

Paying agents: 1 in 30 days
Paid calls: 3 in 30 days
Last paid call: 4 days ago

Source: x402 Bazaar settlement data.

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Trust score

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