Searxng MCP Bridge MCP Server

MCP Server for SearxNG Bridge

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What is the Searxng MCP Bridge MCP server?

Searxng MCP Bridge becomes available to MCP clients through the searxng mcp bridge mcp server. MCP Server for SearxNG Bridge.

What Searxng MCP Bridge does

An MCP (Model Context Protocol) server that bridges to a SearXNG metasearch engine instance. It exposes SearXNG search capabilities as MCP tools, allowing any MCP-compatible client (Claude Desktop, Cursor, opencode, etc.) to perform web searches through a self-hosted, privacy-respecting search engine.

Key capabilities

  • Search Tool — -- Perform web searches with configurable language, categories, time range, safe search, and result limits
  • Health Check — -- Monitor SearXNG connectivity, response time, cache size, and version
  • Dual Transport — -- Supports both STDIO (default) and HTTP streaming transports
  • Response Caching — -- 5-minute TTL cache with periodic cleanup to reduce duplicate requests
  • Retry Logic — -- Automatic retry with exponential backoff (3 attempts) for transient failures
  • Startup Validation — -- Validates SearXNG connection on launch with detailed error diagnostics
  • Session Management — -- HTTP transport includes UUID-based session tracking via mcp-session-id headers
  • CORS Support — -- Configurable origin whitelist with proper preflight handling

Tools it exposes

Once connected, the assistant can call these 2 tools directly:

  • search — The search tool exposed by this server
  • health_check — Check the health and connectivity status of the SearXNG instance and bridge server

Installing the searxng mcp bridge mcp server

The server is distributed via npm as @nitish-raj/searxng-mcp-bridge, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.

Configuration

Before the server will start you need to supply one environment variable: SEARXNG_INSTANCE_URL. Keep credentials in your client's env block or a secrets manager rather than committing them.

Requirements

  • Node.js >=25.0.0 <26 - A running SearXNG instance with JSON API enabled

Where it fits

Developer-tool servers are usually the first ones people connect, because they turn "help me with this code" into an assistant that can actually read the repo and act on it. Searxng MCP Bridge sits in that group, and the shape of its toolset — search, health_check — tells you what it is really for. Worth comparing against the other developer tools servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.

Practical notes

  • This is a hosted server — you point your client at an endpoint rather than running a local process, so there is nothing to keep updated on your machine.
  • It will not start until its required credentials are present, so set those before wondering why the tools never appear.
  • Maintained by nitish-raj, written in TypeScript.
  • MCP clients ask for confirmation before each tool call by default. Keep that on while you learn what the searxng mcp bridge mcp server actually does with your data.
  • Every entry in this directory is reviewed by hand before it goes live, and details are checked against the project's own documentation.

Available tools

ToolWhat it does
searchThe search tool exposed by this server.
health_checkCheck the health and connectivity status of the SearXNG instance and bridge server.

How to install the Searxng MCP Bridge MCP server

{
  "mcpServers": {
    "searxng-mcp-bridge": {
      "command": "npx",
      "args": ["-y", "@nitish-raj/searxng-mcp-bridge"],
      "env": {
        "SEARXNG_INSTANCE_URL": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • Node.js >=25.0.0 <26 - A running SearXNG instance with JSON API enabled
VariableDescriptionRequired
SEARXNG_INSTANCE_URLEndpoint or connection string the server talks to.Yes

Example prompts to try

  • Use Searxng MCP Bridge to search.
  • Use Searxng MCP Bridge to health check.

Frequently asked questions

It connects Searxng MCP Bridge to MCP-compatible AI assistants such as Claude and Cursor, exposing 2 tools (search, health_check) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Searxng MCP Bridge directly.