SearxNG Search API

This page covers how to use the SearxNG search API within LangChain. It is broken into two parts: installation and setup, and then references to the specific SearxNG API wrapper.

Installation and Setup

You can find a list of public SearxNG instances here.
It recommended to use a self-hosted instance to avoid abuse on the public instances. Also note that public instances often have a limit on the number of requests.
To run a self-hosted instance see this page for more information.
To use the tool you need to provide the searx host url by:
1. passing the named parameter searx_host when creating the instance.
2. exporting the environment variable SEARXNG_HOST.

Wrappers

Utility

You can use the wrapper to get results from a SearxNG instance.

from langchain.utilities import SearxSearchWrapper

Tool

You can also easily load this wrapper as a Tool (to use with an Agent). You can do this with:

from langchain.agents import load_tools
tools = load_tools(["searx-search"], searx_host="https://searx.example.com")

For more information on this, see this page