query_exchange_rates
Convert currency using 3-letter codes to find real-time exchange rates, enabling accurate cross-currency calculations for financial tasks.
Instructions
根据货币的三位字母代码查询两者之间的兑换汇率
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| from_code | Yes | 您希望转换的货币的三位字母货币代码。如：CNY | |
| to_code | Yes | 您希望转换为目标货币的三位字母货币代码。如：USD |
Implementation Reference
- src/jexchange_mcp_server/server.py:17-47 (handler)The main handler function for the 'query_exchange_rates' tool, including the @mcp.tool decorator for registration and Pydantic Field definitions for input schema. It makes an HTTP POST request to the JUHE API to fetch exchange rates between two currencies and returns the result as TextContent.
@mcp.tool(name="query_exchange_rates", description="根据货币的三位字母代码查询两者之间的兑换汇率") async def query_exchange_rates( from_code: str = Field(description="您希望转换的货币的三位字母货币代码。如：CNY"), to_code : str = Field(description="您希望转换为目标货币的三位字母货币代码。如：USD") ) -> list[types.TextContent | types.ImageContent | types.EmbeddedResource]: """根据城市、地区、区县名称查询当地实时天气预报情况""" url = f"{JUHE_EXCHANGE_API_BASE}/currency" params = { "version": "2", "from": from_code, "to": to_code, "key": JUHE_EXCHANGE_API_KEY } async with httpx.AsyncClient() as client: response = await client.post(url, params=params) data = response.json() if data["error_code"] == 0: result = data["result"] return [ types.TextContent( type="text", text=f"{result}" ) ] else: return [ types.TextContent( type="text", text=f"Error: {data['reason']}" ) ]