series
Retrieves economic data series from the Federal Reserve Economic Data (FRED) API.
This method provides access to thousands of economic time series including GDP, unemployment rates, inflation, interest rates, and various economic indicators.
Requires a FRED API key to be configured during client creation. API keys are free and can be obtained from https://fred.stlouisfed.org/docs/api/api_key.html
Return
Economic data series observations
Parameters
The FRED series ID (e.g., "GDP", "UNRATE", "CPIAUCSL")
Optional start date for the data range (default: null, returns all available data)
Optional end date for the data range (default: null, returns up to latest available)
Optional data frequency aggregation (e.g., DAILY, WEEKLY, MONTHLY, QUARTERLY, ANNUAL)
Throws
with ErrorCode.CONFIGURATION_ERROR if FRED API key is not configured, or if the series ID is invalid or the request fails