46trust / 100

Calc Easi

by magent in Other

x402 APIFailing, checked 3 h ago

Hanifin 2001 EASI from four regions. Each region: area 0-6 and erythema, edema/papulation, excoriation, and lichenification 0-3. Region score = (sum of signs) × area × adult weight (head/neck 0.1, upper extremities 0.2, trunk 0.3, lower extremities 0.4). Total max 72. Adult weights only. magent does not examine the skin. No IGA or later severity bands. Not a diagnosis.

POST

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

Price: $0.007; per call in USDC
Uptime: 86.5%; last 30 days
Response time: 322 ms; 723 ms slowest 5%
Last check: Failed; 3 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 3 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/easi

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/easi
content-type: application/json

{
  "items": [
    {
      "head_neck_area": 0,
      "head_neck_edema_papulation": 0,
      "head_neck_erythema": 0,
      "head_neck_excoriation": 0,
      "head_neck_lichenification": 0,
      "lower_extremities_area": 0,
      "lower_extremities_edema_papulation": 0,
      "lower_extremities_erythema": 0,
      "lower_extremities_excoriation": 0,
      "lower_extremities_lichenification": 0,
      "trunk_area": 0,
      "trunk_edema_papulation": 0,
      "trunk_erythema": 0,
      "trunk_excoriation": 0,
      "trunk_lichenification": 0,
      "upper_extremities_area": 0,
      "upper_extremities_edema_papulation": 0,
      "upper_extremities_erythema": 0,
      "upper_extremities_excoriation": 0,
      "upper_extremities_lichenification": 0
    },
    {
      "head_neck_area": 0,
      "head_neck_edema_papulation": 0,
      "head_neck_erythema": 0,
      "head_neck_excoriation": 0,
      "head_neck_lichenification": 0,
      "lower_extremities_area": 0,
      "lower_extremities_edema_papulation": 0,
      "lower_extremities_erythema": 0,
      "lower_extremities_excoriation": 0,
      "lower_extremities_lichenification": 0,
      "trunk_area": 0,
      "trunk_edema_papulation": 0,
      "trunk_erythema": 0,
      "trunk_excoriation": 0,
      "trunk_lichenification": 0,
      "upper_extremities_area": 0,
      "upper_extremities_edema_papulation": 0,
      "upper_extremities_erythema": 0,
      "upper_extremities_excoriation": 0,
      "upper_extremities_lichenification": 0
    }
  ]
}

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, 112 lines

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Hanifin JM, Thurston M, Omoto M, Cherill R, Tofte SJ, Graeber M",
        "doi": "10.1034/j.1600-0625.2001.100102.x",
        "id": "hanifin-2001",
        "pmid": "11168575",
        "source": "Exp Dermatol. 2001;10(1):11-18",
        "title": "The eczema area and severity index (EASI): assessment of reliability in atopic dermatitis"
      },
      "components": [
        {
          "area": 0,
          "factor": "head_neck",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.1
        },
        {
          "area": 0,
          "factor": "upper_extremities",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.2
        },
        {
          "area": 0,
          "factor": "trunk",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.3
        },
        {
          "area": 0,
          "factor": "lower_extremities",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.4
        }
      ],
      "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": "easi",
      "formula_expression": "EASI = 0.1*(head_neck_erythema + head_neck_edema_papulation + head_neck_excoriation + head_neck_lichenification)*head_neck_area + 0.2*(upper_extremities_erythema + upper_extremities_edema_papulation + upper_extremities_excoriation + upper_extremities_lichenification)*upper_extremities_area + 0.3*(trunk_erythema + trunk_edema_papulation + trunk_excoriation + trunk_lichenification)*trunk_area + 0.4*(lower_extremities_erythema + lower_extremities_edema_papulation + lower_extremities_excoriation + lower_extremities_lichenification)*lower_extremities_area; each area integer 0-6 (0 none, 1 <10%, 2 10-29%, 3 30-49%, 4 50-69%, 5 70-89%, 6 90-100%); each sign integer 0-3 (0 none, 1 mild, 2 moderate, 3 severe); adult region weights head/neck 0.1, upper extremities 0.2, trunk 0.3, lower extremities 0.4; max 72; magent uses these adult weights only; this paper published no Investigator Global Assessment or mild-moderate-severe EASI cutoffs",
      "head_neck_score": 0,
      "lower_extremities_score": 0,
      "max_score": 72,
      "score": 0,
      "trunk_score": 0,
      "upper_extremities_score": 0
    },
    {
      "citation": {
        "authors": "Hanifin JM, Thurston M, Omoto M, Cherill R, Tofte SJ, Graeber M",
        "doi": "10.1034/j.1600-0625.2001.100102.x",
        "id": "hanifin-2001",
        "pmid": "11168575",
        "source": "Exp Dermatol. 2001;10(1):11-18",
        "title": "The eczema area and severity index (EASI): assessment of reliability in atopic dermatitis"
      },
      "components": [
        {
          "area": 0,
          "factor": "head_neck",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.1
        },
        {
          "area": 0,
          "factor": "upper_extremities",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.2
        },
        {
          "area": 0,
          "factor": "trunk",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.3
        },
        {
          "area": 0,
          "factor": "lower_extremities",
          "points": 0,
          "present": true,
          "value": 0,
          "weight": 0.4
        }
      ],
      "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": "easi",
      "formula_expression": "EASI = 0.1*(head_neck_erythema + head_neck_edema_papulation + head_neck_excoriation + head_neck_lichenification)*head_neck_area + 0.2*(upper_extremities_erythema + upper_extremities_edema_papulation + upper_extremities_excoriation + upper_extremities_lichenification)*upper_extremities_area + 0.3*(trunk_erythema + trunk_edema_papulation + trunk_excoriation + trunk_lichenification)*trunk_area + 0.4*(lower_extremities_erythema + lower_extremities_edema_papulation + lower_extremities_excoriation + lower_extremities_lichenification)*lower_extremities_area; each area integer 0-6 (0 none, 1 <10%, 2 10-29%, 3 30-49%, 4 50-69%, 5 70-89%, 6 90-100%); each sign integer 0-3 (0 none, 1 mild, 2 moderate, 3 severe); adult region weights head/neck 0.1, upper extremities 0.2, trunk 0.3, lower extremities 0.4; max 72; magent uses these adult weights only; this paper published no Investigator Global Assessment or mild-moderate-severe EASI cutoffs",
      "head_neck_score": 0,
      "lower_extremities_score": 0,
      "max_score": 72,
      "score": 0,
      "trunk_score": 0,
      "upper_extremities_score": 0
    }
  ],
  "path": "/api/calc/easi"
}

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/easi' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"head_neck_area":0,"head_neck_edema_papulation":0,"head_neck_erythema":0,"head_neck_excoriation":0,"head_neck_lichenification":0,"lower_extremities_area":0,"lower_extremities_edema_papulation":0,"lower_extremities_erythema":0,"lower_extremities_excoriation":0,"lower_extremities_lichenification":0,"trunk_area":0,"trunk_edema_papulation":0,"trunk_erythema":0,"trunk_excoriation":0,"trunk_lichenification":0,"upper_extremities_area":0,"upper_extremities_edema_papulation":0,"upper_extremities_erythema":0,"upper_extremities_excoriation":0,"upper_extremities_lichenification":0},{"head_neck_area":0,"head_neck_edema_papulation":0,"head_neck_erythema":0,"head_neck_excoriation":0,"head_neck_lichenification":0,"lower_extremities_area":0,"lower_extremities_edema_papulation":0,"lower_extremities_erythema":0,"lower_extremities_excoriation":0,"lower_extremities_lichenification":0,"trunk_area":0,"trunk_edema_papulation":0,"trunk_erythema":0,"trunk_excoriation":0,"trunk_lichenification":0,"upper_extremities_area":0,"upper_extremities_edema_papulation":0,"upper_extremities_erythema":0,"upper_extremities_excoriation":0,"upper_extremities_lichenification":0}]}'

# 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/easi' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"head_neck_area":0,"head_neck_edema_papulation":0,"head_neck_erythema":0,"head_neck_excoriation":0,"head_neck_lichenification":0,"lower_extremities_area":0,"lower_extremities_edema_papulation":0,"lower_extremities_erythema":0,"lower_extremities_excoriation":0,"lower_extremities_lichenification":0,"trunk_area":0,"trunk_edema_papulation":0,"trunk_erythema":0,"trunk_excoriation":0,"trunk_lichenification":0,"upper_extremities_area":0,"upper_extremities_edema_papulation":0,"upper_extremities_erythema":0,"upper_extremities_excoriation":0,"upper_extremities_lichenification":0},{"head_neck_area":0,"head_neck_edema_papulation":0,"head_neck_erythema":0,"head_neck_excoriation":0,"head_neck_lichenification":0,"lower_extremities_area":0,"lower_extremities_edema_papulation":0,"lower_extremities_erythema":0,"lower_extremities_excoriation":0,"lower_extremities_lichenification":0,"trunk_area":0,"trunk_edema_papulation":0,"trunk_erythema":0,"trunk_excoriation":0,"trunk_lichenification":0,"upper_extremities_area":0,"upper_extremities_edema_papulation":0,"upper_extremities_erythema":0,"upper_extremities_excoriation":0,"upper_extremities_lichenification":0}]}' \
  | 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%2Feasi&method=POST
const res = await pay("https://api.magentlab.com/api/calc/easi", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "head_neck_area": 0,
        "head_neck_edema_papulation": 0,
        "head_neck_erythema": 0,
        "head_neck_excoriation": 0,
        "head_neck_lichenification": 0,
        "lower_extremities_area": 0,
        "lower_extremities_edema_papulation": 0,
        "lower_extremities_erythema": 0,
        "lower_extremities_excoriation": 0,
        "lower_extremities_lichenification": 0,
        "trunk_area": 0,
        "trunk_edema_papulation": 0,
        "trunk_erythema": 0,
        "trunk_excoriation": 0,
        "trunk_lichenification": 0,
        "upper_extremities_area": 0,
        "upper_extremities_edema_papulation": 0,
        "upper_extremities_erythema": 0,
        "upper_extremities_excoriation": 0,
        "upper_extremities_lichenification": 0
      },
      {
        "head_neck_area": 0,
        "head_neck_edema_papulation": 0,
        "head_neck_erythema": 0,
        "head_neck_excoriation": 0,
        "head_neck_lichenification": 0,
        "lower_extremities_area": 0,
        "lower_extremities_edema_papulation": 0,
        "lower_extremities_erythema": 0,
        "lower_extremities_excoriation": 0,
        "lower_extremities_lichenification": 0,
        "trunk_area": 0,
        "trunk_edema_papulation": 0,
        "trunk_erythema": 0,
        "trunk_excoriation": 0,
        "trunk_lichenification": 0,
        "upper_extremities_area": 0,
        "upper_extremities_edema_papulation": 0,
        "upper_extremities_erythema": 0,
        "upper_extremities_excoriation": 0,
        "upper_extremities_lichenification": 0
      }
    ]
  }),
});
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/easi",
        json={
            "items": [
                {
                    "head_neck_area": 0,
                    "head_neck_edema_papulation": 0,
                    "head_neck_erythema": 0,
                    "head_neck_excoriation": 0,
                    "head_neck_lichenification": 0,
                    "lower_extremities_area": 0,
                    "lower_extremities_edema_papulation": 0,
                    "lower_extremities_erythema": 0,
                    "lower_extremities_excoriation": 0,
                    "lower_extremities_lichenification": 0,
                    "trunk_area": 0,
                    "trunk_edema_papulation": 0,
                    "trunk_erythema": 0,
                    "trunk_excoriation": 0,
                    "trunk_lichenification": 0,
                    "upper_extremities_area": 0,
                    "upper_extremities_edema_papulation": 0,
                    "upper_extremities_erythema": 0,
                    "upper_extremities_excoriation": 0,
                    "upper_extremities_lichenification": 0,
                },
                {
                    "head_neck_area": 0,
                    "head_neck_edema_papulation": 0,
                    "head_neck_erythema": 0,
                    "head_neck_excoriation": 0,
                    "head_neck_lichenification": 0,
                    "lower_extremities_area": 0,
                    "lower_extremities_edema_papulation": 0,
                    "lower_extremities_erythema": 0,
                    "lower_extremities_excoriation": 0,
                    "lower_extremities_lichenification": 0,
                    "trunk_area": 0,
                    "trunk_edema_papulation": 0,
                    "trunk_erythema": 0,
                    "trunk_excoriation": 0,
                    "trunk_lichenification": 0,
                    "upper_extremities_area": 0,
                    "upper_extremities_edema_papulation": 0,
                    "upper_extremities_erythema": 0,
                    "upper_extremities_excoriation": 0,
                    "upper_extremities_lichenification": 0,
                },
            ],
        },
    )
    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
3 h ago	Timed out	-	-	-
9 h ago	Timed out	-	-	-
15 h ago	Timed out	-	-	-
19 h ago	Timed out	-	-	-
24 h ago	Timed out	-	-	-

Show 10 older checks

29 h ago	Passed	402	442 ms	$0.007
34 h ago	Passed	402	330 ms	$0.007
38 h ago	Passed	402	425 ms	$0.007
43 h ago	Passed	402	463 ms	$0.007
47 h ago	Passed	402	939 ms	$0.007
2 days ago	Passed	402	723 ms	$0.007
2 days ago	Passed	402	177 ms	$0.007
3 days ago	Passed	402	160 ms	$0.007
3 days ago	Passed	402	166 ms	$0.007
3 days ago	Passed	402	350 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 46/ 100

Availability (30-day uptime)		26 / 30
Valid x402 challenge		0 / 15
Response time		7 / 10
Real paying agents (30 days)		3 / 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
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: 5 days ago

Source: x402 Bazaar settlement data.

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Trust score

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