DEX Data & Agent Utilities · Treasury

GETBase

$0.03

per call · USD Coin on Base

US Treasury par yield curve, every constant maturity from 1 month to 30 years for a published business day. Returns curve[] with tenor, months and percent, spreads (2s10s, 3m10y, 5s30s) and an explicit inversion flag - the real question is whether the curve is inverted, not what fourteen numbers are. A tenor Treasury did not publish is null, never zero. Pass ?latest=1 OR ?date=YYYY-MM-DD, not both. Errors: 400 conflicting_params|bad_latest|bad_date, 404 no_curve with the available range.

Endpoint

GET https://x402.donnyautomation.com/treasury

Calls / 30d

Unique payers / 30d

Sep 9

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://x402.donnyautomation.com/treasury", {
  method: "GET",
});
const data = await res.json();

cURL

curl -X GET \
  "https://x402.donnyautomation.com/treasury?latest=1" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "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"
}

Payment details

Pay to0x2740651e046c59ab2a6510401140643292d3a96f

AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913

NetworksBase

Schemesexact

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