ToolVet
61trust / 100

Margin Call

by Investing Math in Markets & finance

x402 APIPassing, checked 8 h ago

Margin call price for shares bought on margin: your cash, the loan, the maintenance requirement and the trigger price.

GET
https://invest-math.x402tookit.com/margin-call
Price
$0.02
per call in USDC
Uptime
63.2%
last 30 days
Response time
522 ms
1.2 s slowest 5%
Last check
Passed
8 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

How to call it

GET https://invest-math.x402tookit.com/margin-call

Each call costs $0.02 in USDC on Polygon, 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.

GET https://invest-math.x402tookit.com/margin-call?initialMarginPct=50&maintenancePct=25&price=50&shares=100

Parameters

ParameterTypeRequiredDescription
initialMarginPctnumberNoShare of the purchase paid with your own cash, 10 to 100 (default 50)
maintenancePctnumberNoMaintenance margin in percent of position value, 10 to 60 (default 25)
pricenumberYesPurchase price per share
sharesnumberYesShares bought

Example response

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

{
  "asOf": "2026-10-11T20:30:29.462Z",
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "dropToCallPct": 33.3333,
  "dropToWipeoutPct": 50,
  "leverage": 2,
  "loan": 2500,
  "marginCallPrice": 33.333333,
  "notChecked": [
    "your broker's real rules: maintenance can be higher, house rules change without notice, and volatile stocks often carry 30 to 100% requirements",
    "interest on the loan, which grows the debt and raises the call price over time",
    "…2 more"
  ],
  "ownCash": 2500,
  "positionValue": 5000,
  "reasons": [
    "Equity ratio = (price x shares - loan) / (price x shares); a call fires when it falls to the maintenance percent.",
    "Call price = loan / (shares x (1 - maintenance)).",
    "…1 more"
  ],
  "source": "computed locally",
  "summary": "Position 5000 with 2500 of your own cash and a 2500 loan: a margin call triggers if the price falls to 33.3333, a 33.3% drop (2x leverage).",
  "verdict": "COMPUTED"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://invest-math.x402tookit.com/margin-call?initialMarginPct=50&maintenancePct=25&price=50&shares=100'

# 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 - 'https://invest-math.x402tookit.com/margin-call?initialMarginPct=50&maintenancePct=25&price=50&shares=100' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Finvest-math.x402tookit.com%2Fmargin-call
const res = await pay("https://invest-math.x402tookit.com/margin-call?initialMarginPct=50&maintenancePct=25&price=50&shares=100");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://invest-math.x402tookit.com/margin-call?initialMarginPct=50&maintenancePct=25&price=50&shares=100")
    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

WhenResultHTTPTimePrice
8 h agoPassed4021.2 s$0.02
21 h agoExpected HTTP 402, got 530530141 ms-
33 h agoPassed402516 ms$0.02
46 h agoExpected HTTP 402, got 530530136 ms-
2 days agoPassed402657 ms$0.02
Show 10 older checks
3 days agoPassed402619 ms$0.02
4 days agoExpected HTTP 402, got 530530136 ms-
4 days agoExpected HTTP 402, got 53053087 ms-
5 days agoExpected HTTP 402, got 53053091 ms-
5 days agoPassed402528 ms$0.02
5 days agoExpected HTTP 402, got 530530196 ms-
5 days agoExpected HTTP 402, got 530530173 ms-
5 days agoPassed402492 ms$0.02
6 days agoPassed402512 ms$0.02
6 days agoPassed402541 ms$0.02