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.

Example of compose.yml to run SearXNG with MCP server

services:
  searxng:
    image: searxng/searxng:latest
    expose:
      - 8080
    volumes:
      - ./searxng/etc/:/etc/searxng/
      - ./searxng/data/:/var/cache/searxng/
    restart: always

  searxng-mcp:
    image: ghcr.io/aicrafted/searxng-mcp:latest
    restart: unless-stopped
    depends_on:
      # Ensure SearXNG starts before the MCP server
      - searxng
    environment:
      SEARXNG_URL: http://searxng:8080
      MCP_HOST: 0.0.0.0
      MCP_PORT: 32123
      MCP_TRANSPORT: "http"
    ports:
      - "32123:32123"

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.