Alpha Vantage Alpha Vantage provides realtime and historical financial market data through a set of powerful and developer-friendly data APIs and spreadsheets.
Generate the ALPHAVANTAGE_API_KEY at their website . Use the AlphaVantageAPIWrapper to get currency exchange rates. 
import getpass
import os

os.environ["ALPHAVANTAGE_API_KEY"] = getpass.getpass()

from langchain_community.utilities.alpha_vantage import AlphaVantageAPIWrapper

alpha_vantage = AlphaVantageAPIWrapper()
alpha_vantage._get_exchange_rate("USD", "JPY")

{'Realtime Currency Exchange Rate': {'1. From_Currency Code': 'USD',
  '2. From_Currency Name': 'United States Dollar',
  '3. To_Currency Code': 'JPY',
  '4. To_Currency Name': 'Japanese Yen',
  '5. Exchange Rate': '148.19900000',
  '6. Last Refreshed': '2023-11-30 21:43:02',
  '7. Time Zone': 'UTC',
  '8. Bid Price': '148.19590000',
  '9. Ask Price': '148.20420000'}}
The _get_time_series_daily method returns the date, daily open, daily high, daily low, daily close, and daily volume of the global equity specified, covering the 100 latest data points. 
alpha_vantage._get_time_series_daily("IBM")
The _get_time_series_weekly method returns the last trading day of the week, weekly open, weekly high, weekly low, weekly close, and weekly volume of the global equity specified, covering 20+ years of historical data. 
alpha_vantage._get_time_series_weekly("IBM")
The _get_quote_endpoint method is a lightweight alternative to the time series APIs and returns the latest price and volume info for the specified symbol. 
alpha_vantage._get_quote_endpoint("IBM")

{'Global Quote': {'01. symbol': 'IBM',
  '02. open': '156.9000',
  '03. high': '158.6000',
  '04. low': '156.8900',
  '05. price': '158.5400',
  '06. volume': '6640217',
  '07. latest trading day': '2023-11-30',
  '08. previous close': '156.4100',
  '09. change': '2.1300',
  '10. change percent': '1.3618%'}}
The search_symbol method returns a list of symbols and the matching company information based on the text entered. 
alpha_vantage.search_symbols("IB")
The _get_market_news_sentiment method returns live and historical market news sentiment for a given asset. 
alpha_vantage._get_market_news_sentiment("IBM")
The _get_top_gainers_losers method returns the top 20 gainers, losers and most active stocks in the US market. 
alpha_vantage._get_top_gainers_losers()
The run method of the wrapper takes the following parameters: from_currency, to_currency. It Gets the currency exchange rates for the given currency pair. 
alpha_vantage.run("USD", "JPY")

{'1. From_Currency Code': 'USD',
 '2. From_Currency Name': 'United States Dollar',
 '3. To_Currency Code': 'JPY',
 '4. To_Currency Name': 'Japanese Yen',
 '5. Exchange Rate': '148.19900000',
 '6. Last Refreshed': '2023-11-30 21:43:02',
 '7. Time Zone': 'UTC',
 '8. Bid Price': '148.19590000',
 '9. Ask Price': '148.20420000'}