ToolVet
78trust / 100

Cryptovar Risk Compare

by securaw.com in Onchain & crypto

x402 APIPassing, checked 5 h ago

Compare 2 or 3 annualized volatility scenarios for a single exposure using Monte Carlo VaR. 0.50 USDC total. All other parameters, seed and path count stay identical. Returns each VaR, difference from the first scenario, original audit and replay proof. Supply base parameters and distinct sigmas. No live prices or correlated portfolio model. Automatic delivery, 30-minute SLA. Idempotency-Key required.

POST
https://www.securaw.com/cryptovar/x402/risk_compare
Price
$0.5
per call in USDC
Uptime
100%
last 30 days
Response time
182 ms
261 ms slowest 5%
Last check
Passed
5 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

POST https://www.securaw.com/cryptovar/x402/risk_compare

Each call costs $0.5 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://www.securaw.com/cryptovar/x402/risk_compare
content-type: application/json

{
  "parameters": {
    "base": {
      "N": 10000,
      "S0": 100000,
      "T": 0.0027397260273972603,
      "alpha": 0.99,
      "engine": "black_scholes",
      "mu": 0,
      "seed": 123,
      "sigma": 0.3
    },
    "sigmas": [
      0.3,
      0.6
    ]
  },
  "service": "risk_compare"
}

Parameters

ParameterTypeRequiredDescription
parametersobjectYes
servicestringYes One of: risk_compare.

Example response

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

Example response, 35 lines
{
  "result": {
    "scenarios": [
      {
        "delta_var": 0,
        "parameters": {
          "N": 10000,
          "S0": 100000,
          "T": 0.0027397260273972603,
          "alpha": 0.99,
          "engine": "black_scholes",
          "mu": 0,
          "seed": 123,
          "sigma": 0.3
        },
        "var": 3597.0445285491296
      },
      {
        "delta_var": 3490.5699627241847,
        "parameters": {
          "N": 10000,
          "S0": 100000,
          "T": 0.0027397260273972603,
          "alpha": 0.99,
          "engine": "black_scholes",
          "mu": 0,
          "seed": 123,
          "sigma": 0.6
        },
        "var": 7087.614491273314
      }
    ]
  },
  "service": "risk_compare"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.5.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.securaw.com/cryptovar/x402/risk_compare' \
  -H 'content-type: application/json' \
  --data-raw '{"parameters":{"base":{"N":10000,"S0":100000,"T":0.0027397260273972603,"alpha":0.99,"engine":"black_scholes","mu":0,"seed":123,"sigma":0.3},"sigmas":[0.3,0.6]},"service":"risk_compare"}'

# 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://www.securaw.com/cryptovar/x402/risk_compare' \
  -H 'content-type: application/json' \
  --data-raw '{"parameters":{"base":{"N":10000,"S0":100000,"T":0.0027397260273972603,"alpha":0.99,"engine":"black_scholes","mu":0,"seed":123,"sigma":0.3},"sigmas":[0.3,0.6]},"service":"risk_compare"}' \
  | 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 $0.5 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.5" });
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 $0.5 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.securaw.com%2Fcryptovar%2Fx402%2Frisk_compare&method=POST
const res = await pay("https://www.securaw.com/cryptovar/x402/risk_compare", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "parameters": {
      "base": {
        "N": 10000,
        "S0": 100000,
        "T": 0.0027397260273972603,
        "alpha": 0.99,
        "engine": "black_scholes",
        "mu": 0,
        "seed": 123,
        "sigma": 0.3
      },
      "sigmas": [
        0.3,
        0.6
      ]
    },
    "service": "risk_compare"
  }),
});
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 $0.5 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.5"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://www.securaw.com/cryptovar/x402/risk_compare",
        json={
            "parameters": {
                "base": {
                    "N": 10000,
                    "S0": 100000,
                    "T": 0.0027397260273972603,
                    "alpha": 0.99,
                    "engine": "black_scholes",
                    "mu": 0,
                    "seed": 123,
                    "sigma": 0.3,
                },
                "sigmas": [
                    0.3,
                    0.6,
                ],
            },
            "service": "risk_compare",
        },
    )
    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
5 h agoPassed402154 ms$0.5
10 h agoPassed402190 ms$0.5
14 h agoPassed40245 ms$0.5
19 h agoPassed402261 ms$0.5
23 h agoPassed402225 ms$0.5
Show 10 older checks
28 h agoPassed402189 ms$0.5
31 h agoPassed402245 ms$0.5
36 h agoPassed40240 ms$0.5
40 h agoPassed402193 ms$0.5
44 h agoPassed402191 ms$0.5
2 days agoPassed402188 ms$0.5
2 days agoPassed402236 ms$0.5
2 days agoPassed402191 ms$0.5
3 days agoPassed402216 ms$0.5
3 days agoPassed402182 ms$0.5