Treasury Yields

{
  "adjusted": true,
  "cache_seconds": 21600,
  "cached": false,
  "date": "2026-10-02",
  "disclaimer": "Informational only. Not investment advice.",
  "note": "No curve was published for 2026-10-04 (weekend, US federal holiday, market closure or not yet published); this is the nearest earlier date with a published curve.",
  "requested_date": "2026-10-04",
  "source": {
    "license": "US Government work, public domain",
    "name": "U.S. Department of the Treasury, Daily Treasury Par Yield Curve Rates",
    "notice": "Data: U.S. Department of the Treasury. No endorsement by the Treasury is implied.",
    "terms": "https://home.treasury.gov/subfooter/site-policies-and-notices",
    "url": "https://home.treasury.gov/resource-center/data-chart-center/interest-rates/TextView?type=daily_treasury_yield_curve"
  },
  "stale": false,
  "unit": "percent per year (bond-equivalent par yields, Treasury CMT curve)",
  "yields_pct": {
    "1 Mo": 4.04,
    "1 Yr": 4.46,
    "1.5 Mo": 4.09,
    "10 Yr": 5.28,
    "2 Mo": 4.11,
    "2 Yr": 4.83,
    "20 Yr": 5.67,
    "3 Mo": 4.19,
    "3 Yr": 4.96,
    "30 Yr": 5.63,
    "4 Mo": 4.26,
    "5 Yr": 5.06,
    "6 Mo": 4.27,
    "7 Yr": 5.17
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://tanod.dev/v1/finance/treasury/yields' \
  -H 'content-type: application/json' \
  --data-raw '{"date":"2026-10-04"}'

# 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://tanod.dev/v1/finance/treasury/yields' \
  -H 'content-type: application/json' \
  --data-raw '{"date":"2026-10-04"}' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftanod.dev%2Fv1%2Ffinance%2Ftreasury%2Fyields&method=POST
const res = await pay("https://tanod.dev/v1/finance/treasury/yields", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "date": "2026-10-04"
  }),
});
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://tanod.dev/v1/finance/treasury/yields",
        json={
            "date": "2026-10-04",
        },
    )
    print(res.status_code, res.text)