Fred Series

Last 30 days

Uptime

100%

Response time

77 ms typical, 274 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.maxwellinternational.ai/v1/macro/fred/series?id=CPIAUCSL"

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.maxwellinternational.ai%2Fv1%2Fmacro%2Ffred%2Fseries
const res = await pay("https://api.maxwellinternational.ai/v1/macro/fred/series?id=CPIAUCSL");
console.log(await res.json());

Example input

{
  "id": "CPIAUCSL"
}

Example output

{
  "count": 119,
  "fetchedAt": "2026-10-05T08:14:41.748Z",
  "frequency": "Monthly",
  "lastUpdated": "2026-09-11 08:37:49-05",
  "latest": {
    "date": "2026-08-01",
    "value": "334.131"
  },
  "observations": [
    {
      "date": "2016-09-01",
      "value": "241.176"
    }
  ],
  "ok": true,
  "seasonalAdjustment": "Seasonally Adjusted",
  "seriesId": "CPIAUCSL",
  "source": "https://api.stlouisfed.org/fred/series/observations",
  "title": "Consumer Price Index for All Urban Consumers: All Items in U.S. City Average",
  "units": "Index 1982-1984=100"
}

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