FRED time series

Fetch any of FRED's ~800,000 economic time series by series ID — GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, chg, ch1, pch, pc1, pca, cca, log). ?seriesId=GDPC1&startDate=2018-01-01&endDate=2023-12-31&units=pc1

Input

Field	Type	Description
seriesId *	string	FRED series ID, e.g. GDPC1, CPIAUCSL, UNRATE, DFF
startDate	string	ISO start date (YYYY-MM-DD), optional
endDate	string	ISO end date (YYYY-MM-DD), optional
limit	number	Max observations, 1-100000 (default 1000)
units	string	Transformation: lin, chg, ch1, pch, pc1 (YoY %), pca, cca, log
frequency	string	Aggregate to d/w/m/q/sa/a, etc. (optional)

Example output

{
  "seriesId": "GDPC1",
  "count": 20,
  "observations": [
    {
      "date": "2018-01-01",
      "value": 18733
    }
  ],
  "source": "FRED (St. Louis Fed)"
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/fred-series?seriesId=GDPC1&startDate=2018-01-01&endDate=2022-12-31"

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

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

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/fred-series?seriesId=GDPC1&startDate=2018-01-01&endDate=2022-12-31");

Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

Part of these workflows

This tool is one step in 2 curated multi-tool workflows — agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

• Financial research — Pull SEC filings, real-time quotes, historical prices, and macro context for a single ticker in one pass.
• Trend analysis — Take any numeric time series — a stock's daily close, a FRED macro indicator, a treasury yield history — and run it through the full quantitative workup: descriptives, moving averages, trend line, outliers, optional correlation against a benchmark, and a deterministic forecast forward with a 95% prediction interval. Everything an analyst writes a notebook for, in one chain of cheap calls.

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