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

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");

Part of these workflows

This tool is one step in 4 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.
• Forecasting bake-off - Don't guess which forecasting method to trust. Backtest all four (naive/drift, SES, Holt, Holt-Winters) on a real series, rank by out-of-sample RMSE, then forecast forward with the winner and its 95% prediction interval. Method selection without the hand-waving.
• Fed economic snapshot - Key Federal Reserve economic indicators - fed funds rate, unemployment, and CPI - in one call.

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