LastLook Data — last 30 days of any FRED series

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xB4848d1b4b7E31B75b9b30d717F89777dC65D68e",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "category": "finance",
      "description": "Financial market data for AI agents — Treasury yields, mortgage rates, FX rates, energy prices, and macro indicators. Pay per query via x402.",
      "input": {
        "method": "GET",
        "queryParams": {
          "id": "DGS30"
        },
        "type": "http"
      },
      "logo_url": "https://api.lastlookdata.com/logo.png",
      "name": "LastLook Data",
      "output": {
        "example": {
          "count": 4,
          "days": 30,
          "end": "2026-05-09",
          "note": "Source: Federal Reserve Bank of St. Louis (FRED)",
          "observations": [
            {
              "date": "2026-04-10",
              "value": 6.82
            },
            {
              "date": "2026-05-09",
              "value": 6.79
            }
          ],
          "series_id": "MORTGAGE30US",
          "service": "LastLook Data",
          "start": "2026-04-10"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "id": {
                  "description": "FRED series ID",
                  "enum": [
                    "DGS30",
                    "DGS10",
                    "DGS5",
                    "DGS2",
                    "DGS1MO",
                    "MORTGAGE30US",
                    "MORTGAGE15US",
                    "MSPUS",
                    "HOUST",
                    "FEDFUNDS",
                    "SOFR",
                    "DPRIME",
                    "DTB3",
                    "IORB",
                    "EFFR",
                    "CPIAUCSL",
                    "CPILFESL",
                    "UNRATE",
                    "GDP",
                    "SAHMREALTIME",
                    "DCOILWTICO",
                    "DCOILBRENTEU",
                    "GASREGCOVW",
                    "DHHNGSP"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "id"
              ],
              "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://api.lastlookdata.com/api/series/30"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://api.lastlookdata.com/api/series/30");
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://api.lastlookdata.com/api/series/30")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header