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FRED Macro Series Observations via Maxwell x402
x402
FRED Macro Series Observations via Maxwell x402 is a paid API for AI agents from api.maxwellinternational.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-30).
Fetches time-series macroeconomic data observations from the St. Louis Fed FRED API for a given series (e.g. GDP, CPI, unemployment) via a pay-per-call x402 proxy.
Price / call$0.005
Success—
StatusUnknown
How this service works
FRED (Federal Reserve Bank of St. Louis) series observations by series id, e.g. GDP, UNRATE, CPIAUCSL: dates and values with the series title, units and frequency.
Output
A JSON object containing the series title, units, frequency, seasonal adjustment type, source URL, fetch timestamp, last updated date, total observation count, the latest observation (date + value), and an array of all historical observations each with a date and value.
Example use cases
Track US GDP growth over time
“Fetch me the full historical GDP time series from FRED, quarterly frequency, seasonally adjusted, so I can see how it's trended over the last 30 years.”
Monitor current inflation data
“What's the latest CPI value from FRED? Pull the most recent observation and the full series so I can track how inflation has changed.”
Economic dashboard data feed
“I'm building a macro dashboard — can you grab the FRED series observations for unemployment rate, including all historical dates and values and the units?”
Technical details
Endpoint
GEThttps://api.maxwellinternational.ai/v1/macro/fred/series?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need programmatic, pay-per-call access to FRED macroeconomic time-series data without managing a FRED API key, and you prefer micropayment-based access via the x402 protocol. It is ideal for agents that need on-demand economic data (GDP, CPI, unemployment, etc.) with a predictable per-call cost of $0.005 USDC.
Side effects
- Invalid or unknown FRED series ID returns an error or empty observations
- Network timeout if FRED upstream is slow or unavailable
- Payment failure if x402 USDC balance is insufficient
- Malformed query parameters may return unexpected or empty results
- Rate limiting from upstream FRED API can cause transient failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"count": 120,
"title": "Gross Domestic Product",
"units": "Billions of Dollars",
"latest": {
"date": "2026-04-01",
"value": "32486.066"
},
"source": "https://api.stlouisfed.org/fred/series/observations",
"seriesId": "GDP",
"fetchedAt": "2026-09-26T02:27:13.554Z",
"frequency": "Quarterly",
"lastUpdated": "2026-08-26 07:49:01-05",
"observations": [
{
"date": "1996-07-01",
"value": "8131.408"
}
],
"seasonalAdjustment": "Seasonally Adjusted Annual Rate"
}
}Tags
x402
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