ToolVet
78trust / 100

Check Applicant Against Roster

by check_applicant_against_roster in Other

x402 APIPassing, checked 2 h ago

Use this to check one applicant carrier against a roster of carriers you already work with — e.g. catching one you previously cut for a revocation or suspension trying to re-enter under a new USDOT number. Returns whether it's linked to any roster member and which ones, never a carrier outside your own roster. Metered: a base price plus a per-roster-entry price, both shown in get_catalog; billed whenever the applicant resolves, whether or not it matches anything on your roster.

POST
https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster
Price
$0.1
per call in USDC
Uptime
100%
last 30 days
Response time
216 ms
282 ms slowest 5%
Last check
Passed
2 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://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster

Each call costs $0.1 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://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster
content-type: application/json

{
  "roster_usdot_numbers": [
    2345678,
    3456789
  ],
  "usdot_number": 1234567
}

Parameters

ParameterTypeRequiredDescription
roster_usdot_numbersarray of integerYesUSDOT numbers of carriers you already do business with or are vetting — your own list. Must not include usdot_number itself, and is capped per call (see get_catalog for the current limit).
usdot_numberintegerYesThe applicant carrier's USDOT number.

Example response

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

{
  "check": {
    "linked": false,
    "matched_roster_usdot_numbers": [],
    "roster_size": 2,
    "usdot_number": 1234567
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.1.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster' \
  -H 'content-type: application/json' \
  --data-raw '{"roster_usdot_numbers":[2345678,3456789],"usdot_number":1234567}'

# 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://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster' \
  -H 'content-type: application/json' \
  --data-raw '{"roster_usdot_numbers":[2345678,3456789],"usdot_number":1234567}' \
  | 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 $0.1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.1" });
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 $0.1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffmcsa-mcp-843680657471.us-central1.run.app%2Fx402%2Fcheck_applicant_against_roster&method=POST
const res = await pay("https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "roster_usdot_numbers": [
      2345678,
      3456789
    ],
    "usdot_number": 1234567
  }),
});
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 $0.1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_applicant_against_roster",
        json={
            "roster_usdot_numbers": [
                2345678,
                3456789,
            ],
            "usdot_number": 1234567,
        },
    )
    print(res.status_code, res.text)

Security scan

1 finding

  • Payment address changed recently in payment
    Payment address changed from J2AjnRuaBKWXmAyrnPpU9S1PEm1AtZh61qDJaLE4fsnW to 0x4c96766F29d98a363A23C30Cf739E4DD1CBcA5d4

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402282 ms$0.1
6 h agoPassed402252 ms$0.1
10 h agoPassed402171 ms$0.1
14 h agoPassed402186 ms$0.1
18 h agoPassed402225 ms$0.1
Show 10 older checks
22 h agoPassed402205 ms$0.1
25 h agoPassed402253 ms$0.1
28 h agoPassed402245 ms$0.1
31 h agoPassed402190 ms$0.1
35 h agoPassed402171 ms$0.1
38 h agoPassed402168 ms$0.1
41 h agoPassed402228 ms$0.1
44 h agoPassed402231 ms$0.1
2 days agoPassed402231 ms$0.1
2 days agoPassed402249 ms$0.1

History

13 Oct 2026Payment address changed from J2AjnRuaBKWXmAyrnPpU9S1PEm1AtZh61qDJaLE4fsnW to 0x4c96766F29d98a363A23C30Cf739E4DD1CBcA5d4