Banxico MCP Server

Instructions

Implementation Reference

• banxico_mcp_server.py:323-340 (handler)

  The handler function decorated with @mcp.tool() that implements the get_latest_usd_mxn_rate tool. It checks for the API token, fetches timely USD/MXN exchange rate data from Banxico's SIE API using the endpoint 'series/SF63528/datos/oportuno', handles errors, and formats the response using format_exchange_rate_data.

  async def get_latest_usd_mxn_rate() -> str:
      """
      Get the latest USD/MXN exchange rate from Banxico.
          
      Returns:
          The most recent USD/MXN exchange rate with date
      """
      if not BANXICO_TOKEN:
          return "Error: BANXICO_API_TOKEN environment variable not set. Please configure your API token."
      
      endpoint = "series/SF63528/datos/oportuno"
      data = await make_banxico_request(endpoint, BANXICO_TOKEN)
      
      if not data:
          return "Failed to retrieve exchange rate data. Please check your API token and network connection."
      
      return format_exchange_rate_data(data)