US Treasury par yield curve, every constant maturity from 1 month to 30 years for a publis

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2740651e046c59aB2A6510401140643292d3a96F",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "30000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "latest": "1"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "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"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "date": {
                  "description": "YYYY-MM-DD business day, for a specific past day. A non-publication day returns 404 with the available range, not the nearest guess.",
                  "type": "string"
                },
                "latest": {
                  "description": "Pass latest=1 for the most recent published curve. Use instead of date, not with it.",
                  "type": "string"
                }
              },
              "required": [],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://x402.donnyautomation.com/treasury"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://x402.donnyautomation.com/treasury");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://x402.donnyautomation.com/treasury")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header