# SearXNG MCP Server An [MCP server](https://modelcontextprotocol.io/introduction) implementation that integrates the [SearXNG](https://docs.searxng.org) API, providing web search capabilities. [![https://nodei.co/npm/mcp-searxng.png?downloads=true&downloadRank=true&stars=true](https://nodei.co/npm/mcp-searxng.png?downloads=true&downloadRank=true&stars=true)](https://www.npmjs.com/package/mcp-searxng) [![https://badgen.net/docker/pulls/isokoliuk/mcp-searxng](https://badgen.net/docker/pulls/isokoliuk/mcp-searxng)](https://hub.docker.com/r/isokoliuk/mcp-searxng)

## Features - **Web Search**: General queries, news, articles, with pagination. - **URL Content Reading**: Advanced content extraction with pagination, section filtering, and heading extraction. - **Intelligent Caching**: URL content is cached with TTL (Time-To-Live) to improve performance and reduce redundant requests. - **Pagination**: Control which page of results to retrieve. - **Time Filtering**: Filter results by time range (day, month, year). - **Language Selection**: Filter results by preferred language. - **Safe Search**: Control content filtering level for search results. ## Tools - **searxng_web_search** - Execute web searches with pagination - Inputs: - `query` (string): The search query. This string is passed to external search services. - `pageno` (number, optional): Search page number, starts at 1 (default 1) - `time_range` (string, optional): Filter results by time range - one of: "day", "month", "year" (default: none) - `language` (string, optional): Language code for results (e.g., "en", "fr", "de") or "all" (default: "all") - `safesearch` (number, optional): Safe search filter level (0: None, 1: Moderate, 2: Strict) (default: instance setting) - **web_url_read** - Read and convert the content from a URL to markdown with advanced content extraction options - Inputs: - `url` (string): The URL to fetch and process - `startChar` (number, optional): Starting character position for content extraction (default: 0) - `maxLength` (number, optional): Maximum number of characters to return - `section` (string, optional): Extract content under a specific heading (searches for heading text) - `paragraphRange` (string, optional): Return specific paragraph ranges (e.g., '1-5', '3', '10-') - `readHeadings` (boolean, optional): Return only a list of headings instead of full content ## Configuration ### Environment Variables #### Required - **`SEARXNG_URL`**: SearXNG instance URL (default: `http://localhost:8080`) - Format: `://[:]` - Example: `https://search.example.com` #### Optional - **`AUTH_USERNAME`** / **`AUTH_PASSWORD`**: HTTP Basic Auth credentials for `searxng_web_search` (password-protected SearXNG instances) - **`USER_AGENT`**: Global default User-Agent header used by both `searxng_web_search` and `web_url_read` (e.g., `MyBot/1.0`) - **`URL_READER_USER_AGENT`**: Custom User-Agent specifically for the `web_url_read` tool (overrides `USER_AGENT` for URL reading requests) - **`HTTP_PROXY`** / **`HTTPS_PROXY`**: Global proxy URLs for routing traffic (fallback for both interfaces) - Format: `http://[username:password@]proxy.host:port` - **`NO_PROXY`**: Comma-separated bypass list (e.g., `localhost,.internal,example.com`) ##### Interface-Specific Proxies (Optional) - **`SEARCH_HTTP_PROXY`** / **`SEARCH_HTTPS_PROXY`**: Proxy for `searxng_web_search` tool only - **`URL_READER_HTTP_PROXY`** / **`URL_READER_HTTPS_PROXY`**: Proxy for `web_url_read` tool only - These take priority over `HTTP_PROXY`/`HTTPS_PROXY` for their respective interfaces #### Advanced Configuration ```bash # Separate proxies for search and URL reading SEARCH_HTTP_PROXY=http://search-proxy:8080 URL_READER_HTTP_PROXY=http://reader-proxy:8080 # Custom user_agent for URL reader URL_READER_USER_AGENT="Mozilla/5.0 (compatible; Bot/1.0)" ``` ## Installation & Configuration ### [NPX](https://www.npmjs.com/package/mcp-searxng) ```json { "mcpServers": { "searxng": { "command": "npx", "args": ["-y", "mcp-searxng"], "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL" } } } } ```

Full Configuration Example (All Options)

```json { "mcpServers": { "searxng": { "command": "npx", "args": ["-y", "mcp-searxng"], "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL", "AUTH_USERNAME": "your_username", "AUTH_PASSWORD": "your_password", "USER_AGENT": "MyBot/1.0", "URL_READER_USER_AGENT": "Mozilla/5.0 (compatible; MyBot/1.0)", "SEARCH_HTTP_PROXY": "http://search-proxy.company.com:8080", "URL_READER_HTTP_PROXY": "http://reader-proxy.company.com:8080", "HTTP_PROXY": "http://global-proxy.company.com:8080", "HTTPS_PROXY": "http://global-proxy.company.com:8080", "NO_PROXY": "localhost,127.0.0.1,.local,.internal" } } } } ``` **Note:** Mix and match environment variables as needed. All optional variables can be used independently or together.

### [NPM](https://www.npmjs.com/package/mcp-searxng) ```bash npm install -g mcp-searxng ``` ```json { "mcpServers": { "searxng": { "command": "mcp-searxng", "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL" } } } } ```

Full Configuration Example (All Options)

```json { "mcpServers": { "searxng": { "command": "mcp-searxng", "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL", "AUTH_USERNAME": "your_username", "AUTH_PASSWORD": "your_password", "USER_AGENT": "MyBot/1.0", "URL_READER_USER_AGENT": "Mozilla/5.0 (compatible; MyBot/1.0)", "SEARCH_HTTP_PROXY": "http://search-proxy.company.com:8080", "URL_READER_HTTP_PROXY": "http://reader-proxy.company.com:8080", "HTTP_PROXY": "http://global-proxy.company.com:8080", "HTTPS_PROXY": "http://global-proxy.company.com:8080", "NO_PROXY": "localhost,127.0.0.1,.local,.internal" } } } } ```

### Docker #### Using [Pre-built Image from Docker Hub](https://hub.docker.com/r/isokoliuk/mcp-searxng) ```bash docker pull isokoliuk/mcp-searxng:latest ``` ```json { "mcpServers": { "searxng": { "command": "docker", "args": [ "run", "-i", "--rm", "-e", "SEARXNG_URL", "isokoliuk/mcp-searxng:latest" ], "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL" } } } } ```

Full Configuration Example (All Options)

```json { "mcpServers": { "searxng": { "command": "docker", "args": [ "run", "-i", "--rm", "-e", "SEARXNG_URL", "-e", "AUTH_USERNAME", "-e", "AUTH_PASSWORD", "-e", "USER_AGENT", "-e", "URL_READER_USER_AGENT", "-e", "SEARCH_HTTP_PROXY", "-e", "SEARCH_HTTPS_PROXY", "-e", "URL_READER_HTTP_PROXY", "-e", "URL_READER_HTTPS_PROXY", "-e", "HTTP_PROXY", "-e", "HTTPS_PROXY", "-e", "NO_PROXY", "isokoliuk/mcp-searxng:latest" ], "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL", "AUTH_USERNAME": "your_username", "AUTH_PASSWORD": "your_password", "USER_AGENT": "MyBot/1.0", "URL_READER_USER_AGENT": "Mozilla/5.0 (compatible; MyBot/1.0)", "SEARCH_HTTP_PROXY": "http://search-proxy.company.com:8080", "URL_READER_HTTP_PROXY": "http://reader-proxy.company.com:8080", "HTTP_PROXY": "http://global-proxy.company.com:8080", "HTTPS_PROXY": "http://global-proxy.company.com:8080", "NO_PROXY": "localhost,127.0.0.1,.local,.internal" } } } } ``` **Note:** Add only the `-e` flags and env variables you need.

#### Build Locally ```bash docker build -t mcp-searxng:latest -f Dockerfile . ``` Use the same configuration as above, replacing `isokoliuk/mcp-searxng:latest` with `mcp-searxng:latest`. #### Docker Compose Create a `docker-compose.yml` file: ```yaml services: mcp-searxng: image: isokoliuk/mcp-searxng:latest stdin_open: true environment: - SEARXNG_URL=YOUR_SEARXNG_INSTANCE_URL # Add any optional variables as needed: # - AUTH_USERNAME=your_username # - AUTH_PASSWORD=your_password # - USER_AGENT=MyBot/1.0 # - URL_READER_USER_AGENT=Mozilla/5.0 (compatible; MyBot/1.0) # - SEARCH_HTTP_PROXY=http://search-proxy.company.com:8080 # - URL_READER_HTTP_PROXY=http://reader-proxy.company.com:8080 # - HTTP_PROXY=http://global-proxy.company.com:8080 # - HTTPS_PROXY=http://proxy.company.com:8080 # - NO_PROXY=localhost,127.0.0.1,.local,.internal ``` Then configure your MCP client: ```json { "mcpServers": { "searxng": { "command": "docker-compose", "args": ["run", "--rm", "mcp-searxng"] } } } ``` ### HTTP Transport (Optional) The server supports both STDIO (default) and HTTP transports. Set `MCP_HTTP_PORT` to enable HTTP mode. ```json { "mcpServers": { "searxng-http": { "command": "mcp-searxng", "env": { "SEARXNG_URL": "YOUR_SEARXNG_INSTANCE_URL", "MCP_HTTP_PORT": "3000" } } } } ``` **HTTP Endpoints:** - **MCP Protocol**: `POST/GET/DELETE /mcp` - **Health Check**: `GET /health` **Testing:** ```bash MCP_HTTP_PORT=3000 SEARXNG_URL=http://localhost:8080 mcp-searxng curl http://localhost:3000/health ``` ## Troubleshooting ### 403 Forbidden Error from SearXNG If you receive a `403 Forbidden` error when using `mcp-searxng`, it is likely because your SearXNG instance does not have JSON format enabled. This server requests results in JSON format (`format=json`), which must be explicitly allowed in SearXNG's configuration. **To fix this**, edit your SearXNG `settings.yml` (commonly located at `/etc/searxng/settings.yml`) and add `json` to the list of allowed formats: ```yaml search: formats: - html - json ``` After saving the file, restart your SearXNG instance. For example, if running with Docker: ```bash docker restart searxng ``` You can verify JSON format is working by running: ```bash curl 'http://localhost:8080/search?q=test&format=json' ``` You should receive a JSON response. If you still get a 403 error, double-check that: - The `settings.yml` file is correctly mounted into your Docker container - The YAML indentation is correct - The SearXNG instance was fully restarted after the configuration change For more details, see the [SearXNG settings documentation](https://docs.searxng.org/admin/settings/settings.html) and [this discussion](https://github.com/searxng/searxng/discussions/1789). ## Running evals ```bash SEARXNG_URL=YOUR_URL OPENAI_API_KEY=your-key npx mcp-eval evals.ts src/index.ts ``` ## For Developers ### Contributing We welcome contributions! Follow these guidelines: **Coding Standards:** - Use TypeScript with strict type safety - Follow existing error handling patterns - Write concise, informative error messages - Include unit tests for new functionality - Maintain 90%+ test coverage - Test with MCP inspector before submitting - Run evals to verify functionality **Workflow:** 1. **Fork and clone:** ```bash git clone https://github.com/YOUR_USERNAME/mcp-searxng.git cd mcp-searxng git remote add upstream https://github.com/ihor-sokoliuk/mcp-searxng.git ``` 2. **Setup:** ```bash npm install npm run watch # Development mode with file watching ``` 3. **Development:** ```bash git checkout -b feature/your-feature-name # Make changes in src/ npm run build npm test npm run test:coverage npm run inspector ``` 4. **Submit:** ```bash git commit -m "feat: description" git push origin feature/your-feature-name # Create PR on GitHub ``` ### Testing ```bash npm test # Run all tests npm run test:coverage # Generate coverage report npm run test:watch # Watch mode ``` **Coverage:** 100% success rate with comprehensive unit tests covering error handling, types, proxy configs, resources, and logging. ## License This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.

Mcp Searxng

Install

Mcp Searxng

Install