US Treasury yield curve in one call: 1mo/3mo/6mo/1yr/2yr/5yr/10yr/30yr yields, the 10y-2y

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xe4181c7de066959bcca010525304ba68a84768e0",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "FTwh34f9yBgdD2ydjQUqHnZGRtQsHMHaRm8w2hpcB79L",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "type": "http"
      },
      "output": {
        "example": {
          "as_of": "2026-07-23",
          "curve": {
            "10yr": 4.71,
            "1mo": 3.82,
            "1yr": 4.15,
            "2yr": 4.37,
            "30yr": 5.17,
            "3mo": 3.95,
            "5yr": 4.46,
            "6mo": 4.09
          },
          "curve_dates": {
            "10yr": "2026-07-23",
            "1mo": "2026-07-23",
            "1yr": "2026-07-23",
            "2yr": "2026-07-23",
            "30yr": "2026-07-23",
            "3mo": "2026-07-23",
            "5yr": "2026-07-23",
            "6mo": "2026-07-23"
          },
          "failed_maturities": [],
          "inverted": {
            "10y_2y": false,
            "10y_3mo": false
          },
          "spreads": {
            "10y_minus_2y_pct": 0.34,
            "10y_minus_3mo_pct": 0.76
          }
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {},
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "builder-code": {
    "info": {
      "a": "bc_vyd5u8m3"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": false,
      "properties": {
        "a": {
          "description": "App builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        },
        "s": {
          "description": "Service builder codes",
          "items": {
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "type": "array"
        },
        "w": {
          "description": "Wallet builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        }
      },
      "type": "object"
    }
  }
}

curl "https://www.x402financialdata.com/yield-curve"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://www.x402financialdata.com/yield-curve");
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://www.x402financialdata.com/yield-curve")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header