SearXNG MCP Server

A Model Context Protocol (MCP) server that provides web search capabilities by integrating with a SearXNG instance.

Features

• Web Search: Perform powerful aggregated searches across multiple engines.
• Discovery: Programmatically retrieve available categories and engines.
• Stateless HTTP: Compatible with any standard JSON-RPC client.
• Flexible Configuration: Supports environment variables and command-line arguments.

Prerequisites

• Python 3.10+
• A running SearXNG instance.

Installation

1. Clone the repository and navigate to the directory.
2. Install dependencies:

   pip install -r requirements.txt
   

3. Set up your .env file (optional):

   SEARXNG_URL=http://your-searxng-instance:8080
   MCP_PORT=32123
   MCP_HOST=127.0.0.1
   

Usage

Run the server using uv or standard python:

python searxng_mcp.py --transport http --port 32123 --searxng http://searx.lan

Run with Docker

1. Build the image:

   docker build -t searxng-mcp .
   

2. Run the container:

   docker run -d \
     -p 32123:32123 \
     -e SEARXNG_URL=http://your-searxng-instance:8080 \
     --name searxng-mcp \
     searxng-mcp
   

Transport Options

• stdio: Standard input/output (default for some MCP clients).
• http: Stateless HTTP (streamable-http).
• sse: Server-Sent Events.

Search Abilities Guide

SearXNG aggregates results from various sources. This guide outlines the capabilities available through the searxng_search tool.

Search Categories

Categories help refine your search by content type. Use these in the categories parameter (comma-separated).

Supported Engines

SearXNG can query over 130 engines. Configured engines typically include:

• Web: Google, Brave, DuckDuckGo, Qwant, Startpage
• Knowledge: Wikipedia, Wikidata
• Development: GitHub, StackOverflow, PyPI
• Social: Reddit, Twitter/X

Advanced Search Parameters

• categories: Filter by specific types (e.g., news,it).
• engines: Force specific engines (e.g., google,wikipedia).
• language: Specify search language (e.g., en, es, fr).
• pageno: Navigate through multiple pages of results.
• time_range: Filter by date (day, month, year).
• safesearch: Control content filtering (0=None, 1=Moderate, 2=Strict).

Programmatic Discovery

Use the searxng_get_info tool to dynamically retrieve the list of enabled categories and engines from your instance.