Treasury

{
  "attribution": "Daily Treasury Par Yield Curve Rates, U.S. Department of the Treasury (public domain).",
  "curve": [
    {
      "months": 3,
      "percent": 3.91,
      "tenor": "3 Mo"
    },
    {
      "months": 24,
      "percent": 4.25,
      "tenor": "2 Yr"
    },
    {
      "months": 120,
      "percent": 4.7,
      "tenor": "10 Yr"
    }
  ],
  "date": "2026-08-03",
  "inversion": {
    "2s10s": false,
    "3m10y": false,
    "anyInverted": false
  },
  "isLatest": true,
  "spreads": {
    "2s10s": 0.45,
    "3m10y": 0.79,
    "5s30s": 0.83,
    "unit": "percentage points"
  },
  "ts": "2026-08-03T00:00:00.000Z"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://x402.donnyautomation.com/treasury?latest=1'

# 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://x402.donnyautomation.com/treasury?latest=1' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.donnyautomation.com%2Ftreasury
const res = await pay("https://x402.donnyautomation.com/treasury?latest=1");
console.log(res.status, await res.text());

# 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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://x402.donnyautomation.com/treasury?latest=1")
    print(res.status_code, res.text)