ToolVet
78trust / 100

Us Treasury Rates

by eu-verify in Markets & finance

x402 APIPassing, checked 3 h ago

Monthly average interest rates the US Treasury pays on its outstanding securities, from the official FiscalData API (Average Interest Rates dataset, updated monthly). Query: ?security=Treasury Bills (exact security_desc, optional; e.g. Treasury Notes, Treasury Bonds) &since=2026-01-01 (optional record_date floor) &limit=12 (1-100, newest first). Returns record_date, security type/name and avg rate in percent. Cached 24h.

GET
https://data.greeneris.io/v1/us/treasury-rates
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
186 ms
452 ms slowest 5%
Last check
Passed
3 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

How to call it

GET https://data.greeneris.io/v1/us/treasury-rates

Each call costs $0.005 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/us/treasury-rates?limit=3&security=Treasury+Bills

Parameters

ParameterTypeRequiredDescription
limitintegerNoMax records, newest first (1-100) Default: 12.
securitystringNoExact security_desc filter, e.g. Treasury Bills
sincestringNoOnly records with record_date >= this ISO date

Example response

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

{
  "count": 2,
  "rates": [
    {
      "avg_interest_rate_pct": 3.706,
      "record_date": "2026-06-30",
      "security": "Treasury Bills",
      "security_type": "Marketable"
    },
    {
      "avg_interest_rate_pct": 3.741,
      "record_date": "2026-05-31",
      "security": "Treasury Bills",
      "security_type": "Marketable"
    }
  ],
  "source": "US Treasury FiscalData API, Average Interest Rates on Treasury Securities (monthly, public domain)"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://data.greeneris.io/v1/us/treasury-rates?limit=3&security=Treasury+Bills'

# 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/us/treasury-rates?limit=3&security=Treasury+Bills' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fdata.greeneris.io%2Fv1%2Fus%2Ftreasury-rates
const res = await pay("https://data.greeneris.io/v1/us/treasury-rates?limit=3&security=Treasury+Bills");
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
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/us/treasury-rates?limit=3&security=Treasury+Bills")
    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
3 h agoPassed402173 ms$0.005
7 h agoPassed402178 ms$0.005
12 h agoPassed402378 ms$0.005
16 h agoPassed402380 ms$0.005
20 h agoPassed402332 ms$0.005
Show 10 older checks
24 h agoPassed402460 ms$0.005
28 h agoPassed402488 ms$0.005
32 h agoPassed402186 ms$0.005
36 h agoPassed402333 ms$0.005
39 h agoPassed402176 ms$0.005
43 h agoPassed402198 ms$0.005
47 h agoPassed402173 ms$0.005
2 days agoPassed402183 ms$0.005
2 days agoPassed402175 ms$0.005
2 days agoPassed402411 ms$0.005