ToolVet
78trust / 100

Check Roster Changes

by check_roster_changes in Other

x402 APIPassing, checked 4 h ago

Use this to find which carriers on your own list changed on or after a date, and what changed: authority, insurance, out-of-service and other tracked fields, each with old and new values. Metered: a base price plus a per-roster-entry price, both shown in get_catalog; billed whenever at least one roster entry resolves, even if nothing changed. As fresh as the last data refresh.

POST
https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_roster_changes
Price
$0.06
per call in USDC
Uptime
100%
last 30 days
Response time
220 ms
334 ms slowest 5%
Last check
Passed
4 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_roster_changes

Each call costs $0.06 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_roster_changes
content-type: application/json

{
  "roster_usdot_numbers": [
    2122247,
    1234567
  ],
  "since": "2026-09-01"
}

Parameters

ParameterTypeRequiredDescription
roster_usdot_numbersarray of integerYesUSDOT numbers of the carriers to watch: your own list, at most 100 per call.
sincestringYesISO date, YYYY-MM-DD. Changes on or after this date are returned.

Example response

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

{
  "roster_changes": {
    "roster_not_found": [],
    "roster_size": 2,
    "since": "2026-09-01"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.06.

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_roster_changes' \
  -H 'content-type: application/json' \
  --data-raw '{"roster_usdot_numbers":[2122247,1234567],"since":"2026-09-01"}'

# 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_roster_changes' \
  -H 'content-type: application/json' \
  --data-raw '{"roster_usdot_numbers":[2122247,1234567],"since":"2026-09-01"}' \
  | 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 $0.06 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.06" });
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 $0.06 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffmcsa-mcp-843680657471.us-central1.run.app%2Fx402%2Fcheck_roster_changes&method=POST
const res = await pay("https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_roster_changes", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "roster_usdot_numbers": [
      2122247,
      1234567
    ],
    "since": "2026-09-01"
  }),
});
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 $0.06 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.06"})
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_roster_changes",
        json={
            "roster_usdot_numbers": [
                2122247,
                1234567,
            ],
            "since": "2026-09-01",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402249 ms$0.06
8 h agoPassed402229 ms$0.06
12 h agoPassed402239 ms$0.06
15 h agoPassed402238 ms$0.06
19 h agoPassed402227 ms$0.06
Show 10 older checks
23 h agoPassed402244 ms$0.06
27 h agoPassed402253 ms$0.06
30 h agoPassed402210 ms$0.06
33 h agoPassed402205 ms$0.06
36 h agoPassed402264 ms$0.06
39 h agoPassed402207 ms$0.06
42 h agoPassed402243 ms$0.06
45 h agoPassed402200 ms$0.06
2 days agoPassed402214 ms$0.06
2 days agoPassed402175 ms$0.06