Alpha Vantage

This API returns the Chaikin A/D line (AD) values. See also: Investopedia article and mathematical reference .

This API returns the Chaikin A/D oscillator (ADOSC) values. See also: Investopedia article and mathematical reference .

This API returns the average directional movement index (ADX) values. See also: Investopedia article and mathematical reference .

This API returns the average directional movement index rating (ADXR) values. See also: mathematical reference .

This API returns the global price index of all commodities in monthly, quarterly, and annual temporal dimensions. Source: International Monetary Fund ( IMF Terms of Use ), Global Price Index of All Commodities, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the global price of aluminum in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Aluminum, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This endpoint returns a rich set of advanced analytics metrics (e.g., total return, variance, auto-correlation, etc.) for a given time series over a fixed temporal window.

This endpoint returns a rich set of advanced analytics metrics (e.g., total return, variance, auto-correlation, etc.) for a given time series over sliding time windows. For example, we can calculate a moving variance over 5 years with a window of 100 points to see how the variance changes over time.

This API returns the absolute price oscillator (APO) values. See also: mathematical reference .

This API returns the Aroon (AROON) values. See also: Investopedia article and mathematical reference .

This API returns the Aroon oscillator (AROONOSC) values. See also: mathematical reference .

This API returns the average true range (ATR) values. See also: Investopedia article and mathematical reference

This API returns the annual and quarterly balance sheets for the company of interest, with normalized fields mapped to GAAP and IFRS taxonomies of the SEC. Data is generally refreshed on the same day a company reports its latest earnings and financials.

This API returns the Bollinger bands (BBANDS) values. See also: Investopedia article and mathematical reference .

This API returns the balance of power (BOP) values.

This API returns the Brent (Europe) crude oil prices in daily, weekly, and monthly horizons. Source: U.S. Energy Information Administration, Crude Oil Prices: Brent - Europe, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the annual and quarterly cash flow for the company of interest, with normalized fields mapped to GAAP and IFRS taxonomies of the SEC. Data is generally refreshed on the same day a company reports its latest earnings and financials.

This API returns the commodity channel index (CCI) values. See also: Investopedia article and mathematical reference .

This API returns the Chande momentum oscillator (CMO) values. See also: mathematical reference .

This API returns the global price of coffee in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Coffee, Other Mild Arabica, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the logo of a publicly traded company in both pixel (PNG) and vector (SVG) formats.

This API returns the latest and historical stock trades disclosed by US congressional representatives.

This API returns the global price of copper in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Copper, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the global price of corn in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Corn, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the global price of cotton in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Cotton, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the monthly and semiannual consumer price index (CPI) of the United States. CPI is widely regarded as the barometer of inflation levels in the broader economy. Source: U.S. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers: All Items in U.S. City Average, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns intraday time series (timestamp, open, high, low, close, volume) of the cryptocurrency specified, updated realtime. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns the realtime exchange rate for any pair of cryptocurrency (e.g., Bitcoin) or physical currency (e.g., USD).

This API returns the double exponential moving average (DEMA) values. See also: Investopedia article and mathematical reference .

This API returns the daily historical time series for a cryptocurrency (e.g., BTC) traded on a specific market (e.g., EUR/Euro), refreshed daily at midnight (UTC). Prices and volumes are quoted in both the market-specific currency and USD.

This API returns the monthly historical time series for a cryptocurrency (e.g., BTC) traded on a specific market (e.g., EUR/Euro), refreshed daily at midnight (UTC). Prices and volumes are quoted in both the market-specific currency and USD.

This API returns the weekly historical time series for a cryptocurrency (e.g., BTC) traded on a specific market (e.g., EUR/Euro), refreshed daily at midnight (UTC). Prices and volumes are quoted in both the market-specific currency and USD.

This API returns historical and future (declared) dividend distributions.

This API returns the monthly manufacturers' new orders of durable goods in the United States. Source: U.S. Census Bureau, Manufacturers' New Orders: Durable Goods, retrieved from FRED, Federal Reserve Bank of St. Louis (https://fred.stlouisfed.org/series/UMDMNO). This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the directional movement index (DX) values. See also: Investopedia article and mathematical reference .

This API returns the annual and quarterly earnings (EPS) for the company of interest. Quarterly data also includes analyst estimates and surprise metrics.

This API returns a list of company earnings expected in the next 3, 6, or 12 months.

This API returns the earnings call transcript for a given company in a specific quarter, covering over 15 years of history and enriched with turn-by-turn sentiment signals.

This API returns the annual and quarterly EPS and revenue estimates for the company of interest, along with analyst count and revision history.

This API returns the exponential moving average (EMA) values. See also: EMA explainer and mathematical reference .

This API returns key ETF metrics (e.g., net assets, expense ratio, and turnover), along with the corresponding ETF holdings / constituents with allocation by asset types and sectors.

This API returns the daily, weekly, and monthly federal funds rate (interest rate) of the United States. Source: Board of Governors of the Federal Reserve System (US), Federal Funds Effective Rate, retrieved from FRED, Federal Reserve Bank of St. Louis (https://fred.stlouisfed.org/series/FEDFUNDS). This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the daily time series (timestamp, open, high, low, close) of the FX currency pair specified, updated realtime.

This API returns intraday time series (timestamp, open, high, low, close) of the FX currency pair specified, updated realtime. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns the monthly time series (timestamp, open, high, low, close) of the FX currency pair specified, updated realtime. The latest data point is the prices information for the month (or partial month) containing the current trading day, updated realtime.

This API returns the weekly time series (timestamp, open, high, low, close) of the FX currency pair specified, updated realtime. The latest data point is the price information for the week (or partial week) containing the current trading day, updated realtime.

This endpoint returns the latest price and volume information for a ticker of your choice. You can specify one ticker per API request. If you would like to query a large universe of tickers in bulk, you may want to try out our Realtime Bulk Quotes API , which accepts up to 100 tickers per API request.

This API returns the historical gold and silver prices in daily, weekly, and monthly horizons. 💡 Tip: Looking for gold and silver live prices instead? Please check out our dedicated gold & silver spot price API .

This API returns the live spot prices of gold and silver metals.

This API returns the full historical options chain for a specific symbol on a specific date, covering 15+ years of history. Implied volatility (IV) and common Greeks (e.g., delta, gamma, theta, vega, rho) are also returned. Option chains are sorted by expiration dates in chronological order. Within the same expiration date, contracts are sorted by strike prices from low to high. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns historical put-call ratios for both the entire option chain and for specific expiration dates. A lower put-call ratio ( =1.0) suggests bearish sentiment. However, because this metric is often used as a contrarian indicator, extreme values can imply the opposite - e.g., readings much higher than 1.0 may actually indicate a bullish outlook, while very low readings close to zero can point to potential bearish conditions.

This API returns historical volume-to-open-interest ratios within an option chain. A high ratio (volume much larger than open interest) often suggests heavy trading activity relative to existing positions, which can indicate short-term speculation, increased liquidity, or possible trend changes. A low ratio (volume small compared to open interest) implies that most positions are being held rather than actively traded, signaling more stable or less volatile conditions. Traders use this ratio to understand whether price moves are driven by new participation (potentially stronger signals) or just minor adjustments within existing positions.

This API returns the Hilbert transform, dominant cycle period (HT_DCPERIOD) values.

This API returns the Hilbert transform, dominant cycle phase (HT_DCPHASE) values.

This API returns the Hilbert transform, phasor components (HT_PHASOR) values.

This API returns the Hilbert transform, sine wave (HT_SINE) values.

This API returns the Hilbert transform, instantaneous trendline (HT_TRENDLINE) values.

This API returns the Hilbert transform, trend vs cycle mode (HT_TRENDMODE) values.

This API returns the annual and quarterly income statements for the company of interest, with normalized fields mapped to GAAP and IFRS taxonomies of the SEC. Data is generally refreshed on the same day a company reports its latest earnings and financials.

The Index Catalog API returns the full list of supported index symbols, along with the corresponding long-form names.

This API returns decades of daily/weekly/monthly open, high, low, close (OHLC) time series data for over 200+ major market indices. For the full list of supported indices, please refer to the Index Catalog . [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns the annual inflation rates (consumer prices) of the United States. Source: World Bank, Inflation, consumer prices for the United States, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the latest and historical insider transactions made by key stakeholders (e.g., founders, executives, board members, etc.) of a specific company.

This API returns the institutional ownership and holdings information for an equity of interest.

This API returns a list of IPOs expected in the next 3 months.

This API returns the Kaufman adaptive moving average (KAMA) values.

This API returns a list of active or delisted US stocks and ETFs, either as of the latest trading day or at a specific time in history. The endpoint is positioned to facilitate equity research on asset lifecycle and survivorship.

This API returns the moving average convergence / divergence (MACD) values. See also: Investopedia article and mathematical reference . [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns the moving average convergence / divergence values with controllable moving average type. See also: Investopedia article and mathematical reference .

This API returns the MESA adaptive moving average (MAMA) values.

This endpoint returns the current market status (open vs. closed) of major trading venues for equities, forex, and cryptocurrencies around the world.

This API returns the money flow index (MFI) values. See also: Investopedia article and mathematical reference .

This API returns the midpoint (MIDPOINT) values. MIDPOINT = (highest value + lowest value)/2.

This API returns the midpoint price (MIDPRICE) values. MIDPRICE = (highest high + lowest low)/2.

This API returns the minus directional indicator (MINUS_DI) values. See also: Investopedia article and mathematical reference .

This API returns the minus directional movement (MINUS_DM) values. See also: Investopedia article

This API returns the momentum (MOM) values. See also: Investopedia article and mathematical reference .

This API returns the normalized average true range (NATR) values.

This API returns the Henry Hub natural gas spot prices in daily, weekly, and monthly horizons. Source: U.S. Energy Information Administration, Henry Hub Natural Gas Spot Price, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

Looking for market news data to train your LLM models or to augment your trading strategy? You have just found it. This API returns live and historical market news & sentiment data from a large & growing selection of premier news outlets around the world, covering stocks, cryptocurrencies, forex, and a wide range of topics such as fiscal policy, mergers & acquisitions, IPOs, etc. This API, combined with our core stock API, fundamental data, and technical indicator APIs, can provide you with a 360-degree view of the financial market and the broader economy.

This API returns the monthly US All Employees: Total Nonfarm (commonly known as Total Nonfarm Payroll), a measure of the number of U.S. workers in the economy that excludes proprietors, private household employees, unpaid volunteers, farm employees, and the unincorporated self-employed. Source: U.S. Bureau of Labor Statistics, All Employees, Total Nonfarm, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the on balance volume (OBV) values. See also: Investopedia article and mathematical reference .

This API returns the company information, financial ratios, and other key metrics for the equity specified. Data is generally refreshed on the same day a company reports its latest earnings and financials.

This API returns the plus directional indicator (PLUS_DI) values. See also: Investopedia article and mathematical reference .

This API returns the plus directional movement (PLUS_DM) values. See also: Investopedia article

This API returns the key metadata for US congressional representatives, such as bioguide_id, district, time in service, etc.

This API returns the percentage price oscillator (PPO) values. See also: Investopedia article and mathematical reference .

This API returns the annual and quarterly Real GDP of the United States. Source: U.S. Bureau of Economic Analysis, Real Gross Domestic Product, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the quarterly Real GDP per Capita data of the United States. Source: U.S. Bureau of Economic Analysis, Real gross domestic product per capita, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns realtime bid and ask prices for US-traded symbols in bulk, accepting up to 100 symbols per API request and covering both regular and extended (pre-market and post-market) trading hours. You can use this endpoint as an efficient way to query top-of-the-book Level 2 data. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns realtime quotes for US-traded symbols in bulk, accepting up to 100 symbols per API request and covering both regular and extended (pre-market and post-market) trading hours. You can use this endpoint as a high-throughput alternative to the Global Quote API , which accepts one symbol per API request. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns realtime US options data with full market coverage. Option chains are sorted by expiration dates in chronological order. Within the same expiration date, contracts are sorted by strike prices from low to high. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns realtime put-call ratios for both the entire option chain and for specific expiration dates. A lower put-call ratio ( =1.0) suggests bearish sentiment. However, because this metric is often used as a contrarian indicator, extreme values can imply the opposite - e.g., readings much higher than 1.0 may actually indicate a bullish outlook, while very low readings close to zero can point to potential bearish conditions.

This API returns realtime volume-to-open-interest ratios within an option chain. A high ratio (volume much larger than open interest) often suggests heavy trading activity relative to existing positions, which can indicate short-term speculation, increased liquidity, or possible trend changes. A low ratio (volume small compared to open interest) implies that most positions are being held rather than actively traded, signaling more stable or less volatile conditions. Traders use this ratio to understand whether price moves are driven by new participation (potentially stronger signals) or just minor adjustments within existing positions.

This API returns the monthly Advance Retail Sales: Retail Trade data of the United States. Source: U.S. Census Bureau, Advance Retail Sales: Retail Trade, retrieved from FRED, Federal Reserve Bank of St. Louis (https://fred.stlouisfed.org/series/RSXFSN). This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the rate of change (ROC) values. See also: Investopedia article .

This API returns the rate of change ratio (ROCR) values. See also: Investopedia article .

This API returns the relative strength index (RSI) values. See also: RSI explainer and mathematical reference .

This API returns the parabolic SAR (SAR) values. See also: Investopedia article and mathematical reference .

This API returns the quarterly numbers of shares outstanding for the company of interest, with both diluted and basic shares outstanding values returned. Data is generally refreshed on the same day a company reports its latest earnings and financials.

This API returns the simple moving average (SMA) values. See also: SMA explainer and mathematical reference .

This API returns historical split events.

This API returns the stochastic oscillator (STOCH) values. See also: Investopedia article and mathematical reference .

This API returns the stochastic fast (STOCHF) values. See also: Investopedia article and mathematical reference .

This API returns the stochastic relative strength index (STOCHRSI) values. See also: mathematical reference .

This API returns the global price of sugar in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Sugar, No. 11, World, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

Looking for some specific symbols or companies? Trying to build an auto-complete search box similar to the one below? We've got you covered! The Search Endpoint returns the best-matching symbols and market information based on keywords of your choice. The search results also contain match scores that provide you with the full flexibility to develop your own search and filtering logic.

This API returns the Tilson moving average (T3) values. See also: mathematical reference .

This API returns the triple exponential moving average (TEMA) values. See also: mathematical reference .

This API returns raw (as-traded) daily time series (date, daily open, daily high, daily low, daily close, daily volume) of the global equity specified, covering 25+ years of historical data. The OHLCV data is sometimes called "candles" in finance literature. If you are also interested in split/dividend-adjusted data, please use the Daily Adjusted API , which covers adjusted close values and historical split and dividend events.

This API returns raw (as-traded) daily open/high/low/close/volume values, adjusted close values, and historical split/dividend events of the global equity specified, covering 25+ years of historical data. The OHLCV data is sometimes called "candles" in finance literature. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns current and 25+ years of historical intraday OHLCV time series of the equity specified, covering pre-market and post-market hours where applicable (e.g., 4:00am to 8:00pm Eastern Time for the US market). You can query both raw (as-traded) and split/dividend-adjusted intraday data from this endpoint. The OHLCV data is sometimes called "candles" in finance literature. [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns monthly time series (last trading day of each month, monthly open, monthly high, monthly low, monthly close, monthly volume) of the global equity specified, covering 25+ years of historical data.

This API returns monthly adjusted time series (last trading day of each month, monthly open, monthly high, monthly low, monthly close, monthly adjusted close, monthly volume, monthly dividend) of the equity specified, covering 25+ years of historical data.

This API returns weekly time series (last trading day of each week, weekly open, weekly high, weekly low, weekly close, weekly volume) of the global equity specified, covering 25+ years of historical data.

This API returns weekly adjusted time series (last trading day of each week, weekly open, weekly high, weekly low, weekly close, weekly adjusted close, weekly volume, weekly dividend) of the global equity specified, covering 25+ years of historical data.

This endpoint returns the top 20 gainers, losers, and the most active traded tickers in the US market.

This API returns the true range (TRANGE) values. See also: mathematical reference

This API returns the daily, weekly, and monthly US treasury yield of a given maturity timeline (e.g., 5 year, 30 year, etc). Source: Board of Governors of the Federal Reserve System (US), Market Yield on U.S. Treasury Securities at 3-month, 2-year, 5-year, 7-year, 10-year, and 30-year Constant Maturities, Quoted on an Investment Basis, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the triangular moving average (TRIMA) values. See also: mathematical reference .

This API returns the 1-day rate of change of a triple smooth exponential moving average (TRIX) values. See also: Investopedia article and mathematical reference .

This API returns the ultimate oscillator (ULTOSC) values. See also: mathematical reference .

This API returns the monthly unemployment data of the United States. The unemployment rate represents the number of unemployed as a percentage of the labor force. Labor force data are restricted to people 16 years of age and older, who currently reside in 1 of the 50 states or the District of Columbia, who do not reside in institutions (e.g., penal and mental facilities, homes for the aged), and who are not on active duty in the Armed Forces ( source ). Source: U.S. Bureau of Labor Statistics, Unemployment Rate, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the volume weighted average price (VWAP) for intraday time series. See also: Investopedia article . [Alpha Vantage marks this a premium endpoint: measured 2026-09-10, a non-premium key receives HTTP 200 with an Information notice pointing at the premium plans instead of data.]

This API returns the global price of wheat in monthly, quarterly, and annual horizons. Source: International Monetary Fund ( IMF Terms of Use ), Global price of Wheat, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .

This API returns the Williams' %R (WILLR) values. See also: mathematical reference .

This API returns the weighted moving average (WMA) values. See also: mathematical reference .

This API returns the West Texas Intermediate (WTI) crude oil prices in daily, weekly, and monthly horizons. Source: U.S. Energy Information Administration, Crude Oil Prices: West Texas Intermediate (WTI) - Cushing, Oklahoma, retrieved from FRED, Federal Reserve Bank of St. Louis. This data feed uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis. By using this data feed, you agree to be bound by the FRED® API Terms of Use .