ToolVet
15trust / 100

Us Treasury Auctions

by Vextorium in Markets & finance

x402 APIFailing, checked 2 h ago

US Treasury debt auctions (bills, notes, bonds, TIPS, FRNs): upcoming announced auctions or recent results with term, offering amount, high yield and bid-to-cover demand. Official Fiscal Data.

POST
https://api.vextorium.com/v1/us-treasury-auctions
Price
$0.003
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 2 h ago: Amount "0.003" is not in atomic token units

Status and outage history · Atom feed

How to call it

POST https://api.vextorium.com/v1/us-treasury-auctions

Each call costs $0.003 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://api.vextorium.com/v1/us-treasury-auctions
content-type: application/json

{
  "limit": 5
}

Parameters

ParameterTypeRequiredDescription
limitintegerNo1-100 (default 15)
typestringNo One of: bill, note, bond, tips, frn.
upcomingbooleanNo

Example response

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

Example response, 28 lines
{
  "auctions": [
    {
      "auction_date": "2026-10-01",
      "awarded_rate_pct": 3.956,
      "bid_to_cover": 2.83,
      "coupon_pct": null,
      "cusip": "912797VP9",
      "maturity": "2026-11-03",
      "offered_amount_usd": 100000000000,
      "term": "4-Week",
      "type": "Bill"
    },
    {
      "auction_date": "2026-10-01",
      "awarded_rate_pct": 4.071,
      "bid_to_cover": 2.7,
      "coupon_pct": null,
      "cusip": "912797VZ7",
      "maturity": "2026-12-01",
      "offered_amount_usd": 95000000000,
      "term": "8-Week",
      "type": "Bill"
    }
  ],
  "source": "U.S. Treasury Fiscal Data (public domain)",
  "upcoming": false
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/us-treasury-auctions' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":5}'

# 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://api.vextorium.com/v1/us-treasury-auctions' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":5}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fus-treasury-auctions&method=POST
const res = await pay("https://api.vextorium.com/v1/us-treasury-auctions", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 5
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/us-treasury-auctions",
        json={
            "limit": 5,
        },
    )
    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
2 h agoAmount "0.003" is not in atomic token units402102 ms$0.003
7 h agoAmount "0.003" is not in atomic token units402240 ms$0.003
12 h agoAmount "0.003" is not in atomic token units40298 ms$0.003
16 h agoAmount "0.003" is not in atomic token units40275 ms$0.003
21 h agoAmount "0.003" is not in atomic token units402101 ms$0.003
Show 10 older checks
26 h agoAmount "0.003" is not in atomic token units402110 ms$0.003
30 h agoAmount "0.003" is not in atomic token units402130 ms$0.003
35 h agoAmount "0.003" is not in atomic token units40282 ms$0.003
39 h agoAmount "0.003" is not in atomic token units40280 ms$0.003
44 h agoAmount "0.003" is not in atomic token units402131 ms$0.003
2 days agoAmount "0.003" is not in atomic token units402242 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40286 ms$0.003
2 days agoAmount "0.003" is not in atomic token units402227 ms$0.003
3 days agoAmount "0.003" is not in atomic token units402217 ms$0.003
3 days agoAmount "0.003" is not in atomic token units40282 ms$0.003