mirror of
https://github.com/hwchase17/langchain
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37 lines
1.0 KiB
Python
37 lines
1.0 KiB
Python
from typing import Optional, Type
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from langchain_core.callbacks import CallbackManagerForToolRun
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from langchain_core.pydantic_v1 import BaseModel
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from langchain_core.tools import BaseTool
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from langchain_community.utilities.polygon import PolygonAPIWrapper
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class Inputs(BaseModel):
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"""Inputs for Polygon's Last Quote API"""
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query: str
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class PolygonLastQuote(BaseTool):
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"""Tool that gets the last quote of a ticker from Polygon"""
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mode: str = "get_last_quote"
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name: str = "polygon_last_quote"
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description: str = (
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"A wrapper around Polygon's Last Quote API. "
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"This tool is useful for fetching the latest price of a stock. "
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"Input should be the ticker that you want to query the last price quote for."
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)
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args_schema: Type[BaseModel] = Inputs
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api_wrapper: PolygonAPIWrapper
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def _run(
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self,
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query: str,
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run_manager: Optional[CallbackManagerForToolRun] = None,
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) -> str:
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"""Use the Polygon API tool."""
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return self.api_wrapper.run(self.mode, ticker=query)
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