ToolVet
75trust / 100

Validate Isin

by eu-verify in Markets & finance

x402 APIPassing, checked 11 min ago

Deterministic ISIN check before routing an order or paying a market-data API: structure regex (2-letter country or XS/EU, 9-char NSIN, check digit) and the Luhn checksum over the base-36 expansion. Query: ?isin=US0378331005. Returns valid, country_code, nsin, check_digit and is_international. A corrupted ISIN means a rejected order or the wrong instrument. Pure offline computation, 1y cache.

GET
https://data.greeneris.io/v1/validate/isin
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
344 ms
396 ms slowest 5%
Last check
Passed
11 min ago, next in 19 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://data.greeneris.io/v1/validate/isin

Each call costs $0.002 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.

GET https://data.greeneris.io/v1/validate/isin?isin=US0378331005

Parameters

ParameterTypeRequiredDescription
isinstringYesISIN to validate, 12 characters

Example response

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

{
  "check_digit": "5",
  "country_code": "US",
  "is_international": false,
  "isin": "US0378331005",
  "nsin": "037833100",
  "source": "offline ISO 6166 structure + Luhn base-36 checksum (no securities reference data)",
  "valid": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://data.greeneris.io/v1/validate/isin?isin=US0378331005'

# 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://data.greeneris.io/v1/validate/isin?isin=US0378331005' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fdata.greeneris.io%2Fv1%2Fvalidate%2Fisin
const res = await pay("https://data.greeneris.io/v1/validate/isin?isin=US0378331005");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://data.greeneris.io/v1/validate/isin?isin=US0378331005")
    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
11 min agoPassed402356 ms$0.002
4 h agoPassed402339 ms$0.002
9 h agoPassed402355 ms$0.002
13 h agoPassed402357 ms$0.002
17 h agoPassed402387 ms$0.002
Show 10 older checks
21 h agoPassed402349 ms$0.002
25 h agoPassed402390 ms$0.002
29 h agoPassed402341 ms$0.002
33 h agoPassed402302 ms$0.002
37 h agoPassed402379 ms$0.002
41 h agoPassed402360 ms$0.002
45 h agoPassed402326 ms$0.002
2 days agoPassed402396 ms$0.002
2 days agoPassed402335 ms$0.002
2 days agoPassed402360 ms$0.002