Open-WebSearch MCP Server

🇨🇳 中文 | 🇺🇸 English

A Model Context Protocol (MCP) server based on multi-engine search results, supporting free web search without API keys.

Features

• Web search using multi-engine results
  • bing
  • baidu
  • linux.do temporarily unsupported
  • csdn
  • duckduckgo
  • exa
  • brave
  • juejin
• HTTP proxy configuration support for accessing restricted resources
• No API keys or authentication required
• Returns structured results with titles, URLs, and descriptions
• Configurable number of results per search
• Customizable default search engine
• Support for fetching individual article content
  • csdn
  • github (README files)

TODO

• Support for Bing (already supported), DuckDuckGo (already supported), Exa (already supported), Brave (already supported), Google and other search engines
• Support for more blogs, forums, and social platforms
• Optimize article content extraction, add support for more sites
• Support for GitHub README fetching (already supported)

Installation Guide

NPX Quick Start (Recommended)

The fastest way to get started:

# Basic usage
npx open-websearch@latest

# With environment variables (Linux/macOS)
DEFAULT_SEARCH_ENGINE=duckduckgo ENABLE_CORS=true npx open-websearch@latest

# Windows PowerShell
$env:DEFAULT_SEARCH_ENGINE="duckduckgo"; $env:ENABLE_CORS="true"; npx open-websearch@latest

# Windows CMD
set MODE=stdio && set DEFAULT_SEARCH_ENGINE=duckduckgo && npx open-websearch@latest

# Cross-platform (requires cross-env, Used for local development)
npm install -g open-websearch
npx cross-env DEFAULT_SEARCH_ENGINE=duckduckgo ENABLE_CORS=true open-websearch

Environment Variables:

Variable	Default	Options	Description
ENABLE_CORS	false	true, false	Enable CORS
CORS_ORIGIN	*	Any valid origin	CORS origin configuration
DEFAULT_SEARCH_ENGINE	bing	bing, duckduckgo, exa, brave, baidu, csdn, juejin	Default search engine
USE_PROXY	false	true, false	Enable HTTP proxy
PROXY_URL	http://127.0.0.1:7890	Any valid URL	Proxy server URL
MODE	both	both, http, stdio	Server mode: both HTTP+STDIO, HTTP only, or STDIO only
PORT	3000	1-65535	Server port
ALLOWED_SEARCH_ENGINES	empty (all available)	Comma-separated engine names	Limit which search engines can be used; if the default engine is not in this list, the first allowed engine becomes the default
MCP_TOOL_SEARCH_NAME	search	Valid MCP tool name	Custom name for the search tool
MCP_TOOL_FETCH_LINUXDO_NAME	fetchLinuxDoArticle	Valid MCP tool name	Custom name for the Linux.do article fetch tool
MCP_TOOL_FETCH_CSDN_NAME	fetchCsdnArticle	Valid MCP tool name	Custom name for the CSDN article fetch tool
MCP_TOOL_FETCH_GITHUB_NAME	fetchGithubReadme	Valid MCP tool name	Custom name for the GitHub README fetch tool
MCP_TOOL_FETCH_JUEJIN_NAME	fetchJuejinArticle	Valid MCP tool name	Custom name for the Juejin article fetch tool

Common configurations:

# Enable proxy for restricted regions
USE_PROXY=true PROXY_URL=http://127.0.0.1:7890 npx open-websearch@latest

# Full configuration
DEFAULT_SEARCH_ENGINE=duckduckgo ENABLE_CORS=true USE_PROXY=true PROXY_URL=http://127.0.0.1:7890 PORT=8080 npx open-websearch@latest

Local Installation

1. Clone or download this repository
2. Install dependencies:

npm install

3. Build the server:

npm run build

4. Add the server to your MCP configuration:

Cherry Studio:

{
  "mcpServers": {
    "web-search": {
      "name": "Web Search MCP",
      "type": "streamableHttp",
      "description": "Multi-engine web search with article fetching",
      "isActive": true,
      "baseUrl": "http://localhost:3000/mcp"
    }
  }
}

VSCode (Claude Dev Extension):

{
  "mcpServers": {
    "web-search": {
      "transport": {
        "type": "streamableHttp",
        "url": "http://localhost:3000/mcp"
      }
    },
    "web-search-sse": {
      "transport": {
        "type": "sse",
        "url": "http://localhost:3000/sse"
      }
    }
  }
}

Claude Desktop:

{
  "mcpServers": {
    "web-search": {
      "transport": {
        "type": "streamableHttp",
        "url": "http://localhost:3000/mcp"
      }
    },
    "web-search-sse": {
      "transport": {
        "type": "sse",
        "url": "http://localhost:3000/sse"
      }
    }
  }
}

NPX Command Line Configuration:

{
  "mcpServers": {
    "web-search": {
      "args": [
        "open-websearch@latest"
      ],
      "command": "npx",
      "env": {
        "MODE": "stdio",
        "DEFAULT_SEARCH_ENGINE": "duckduckgo",
        "ALLOWED_SEARCH_ENGINES": "duckduckgo,bing,exa"
      }
    }
  }
}

Local STDIO Configuration for Cherry Studio (Windows):

{
  "mcpServers": {
    "open-websearch-local": {
      "command": "node",
      "args": ["C:/path/to/your/project/build/index.js"],
      "env": {
        "MODE": "stdio",
        "DEFAULT_SEARCH_ENGINE": "duckduckgo",
        "ALLOWED_SEARCH_ENGINES": "duckduckgo,bing,exa"
      }
    }
  }
}

Docker Deployment

Quick deployment using Docker Compose:

docker-compose up -d

Or use Docker directly:

docker run -d --name web-search -p 3000:3000 -e ENABLE_CORS=true -e CORS_ORIGIN=* ghcr.io/aas-ee/open-web-search:latest

Environment variable configuration:

Variable	Default	Options	Description
ENABLE_CORS	false	true, false	Enable CORS
CORS_ORIGIN	*	Any valid origin	CORS origin configuration
DEFAULT_SEARCH_ENGINE	bing	bing, duckduckgo, exa, brave	Default search engine
USE_PROXY	false	true, false	Enable HTTP proxy
PROXY_URL	http://127.0.0.1:7890	Any valid URL	Proxy server URL
PORT	3000	1-65535	Server port

Then configure in your MCP client:

{
  "mcpServers": {
    "web-search": {
      "name": "Web Search MCP",
      "type": "streamableHttp",
      "description": "Multi-engine web search with article fetching",
      "isActive": true,
      "baseUrl": "http://localhost:3000/mcp"
    },
    "web-search-sse": {
      "transport": {
        "name": "Web Search MCP",
        "type": "sse",
        "description": "Multi-engine web search with article fetching",
        "isActive": true,
        "url": "http://localhost:3000/sse"
      }
    }
  }
}

Usage Guide

The server provides four tools: search, fetchLinuxDoArticle, fetchCsdnArticle, and fetchGithubReadme.

search Tool Usage

{
  "query": string,        // Search query
  "limit": number,        // Optional: Number of results to return (default: 10)
  "engines": string[]     // Optional: Engines to use (bing,baidu,linuxdo,csdn,duckduckgo,exa,brave,juejin) default bing
}

Usage example:

use_mcp_tool({
  server_name: "web-search",
  tool_name: "search",
  arguments: {
    query: "search content",
    limit: 3,  // Optional parameter
    engines: ["bing", "csdn", "duckduckgo", "exa", "brave", "juejin"] // Optional parameter, supports multi-engine combined search
  }
})

Response example:

[
  {
    "title": "Example Search Result",
    "url": "https://example.com",
    "description": "Description text of the search result...",
    "source": "Source",
    "engine": "Engine used"
  }
]

fetchCsdnArticle Tool Usage

Used to fetch complete content of CSDN blog articles.

{
  "url": string    // URL from CSDN search results using the search tool
}

Usage example:

use_mcp_tool({
  server_name: "web-search",
  tool_name: "fetchCsdnArticle",
  arguments: {
    url: "https://blog.csdn.net/xxx/article/details/xxx"
  }
})

Response example:

[
  {
    "content": "Example search result"
  }
]

fetchLinuxDoArticle Tool Usage

Used to fetch complete content of Linux.do forum articles.

{
  "url": string    // URL from linuxdo search results using the search tool
}

Usage example:

use_mcp_tool({
  server_name: "web-search",
  tool_name: "fetchLinuxDoArticle",
  arguments: {
    url: "https://xxxx.json"
  }
})

Response example:

[
  {
    "content": "Example search result"
  }
]

fetchGithubReadme Tool Usage

Used to fetch README content from GitHub repositories.

{
  "url": string    // GitHub repository URL (supports HTTPS, SSH formats)
}

Usage example:

use_mcp_tool({
  server_name: "web-search",
  tool_name: "fetchGithubReadme",
  arguments: {
    url: "https://github.com/Aas-ee/open-webSearch"
  }
})

Supported URL formats:

• HTTPS: https://github.com/owner/repo
• HTTPS with .git: https://github.com/owner/repo.git
• SSH: [email protected]:owner/repo.git
• URLs with parameters: https://github.com/owner/repo?tab=readme

Response example:

[
  {
    "content": "<div align=\"center\">\n\n# Open-WebSearch MCP Server..."
  }
]

fetchJuejinArticle Tool Usage

Used to fetch complete content of Juejin articles.

{
  "url": string    // Juejin article URL from search results
}

Usage example:

use_mcp_tool({
  server_name: "web-search",
  tool_name: "fetchJuejinArticle",
  arguments: {
    url: "https://juejin.cn/post/7520959840199360563"
  }
})

Supported URL format:

• https://juejin.cn/post/{article_id}

Response example:

[
  {
    "content": "🚀 开源 AI 联网搜索工具：Open-WebSearch MCP 全新升级，支持多引擎 + 流式响应..."
  }
]

Usage Limitations

Since this tool works by scraping multi-engine search results, please note the following important limitations:

1. Rate Limiting:

   • Too many searches in a short time may cause the used engines to temporarily block requests
   • Recommendations:
     • Maintain reasonable search frequency
     • Use the limit parameter judiciously
     • Add delays between searches when necessary

2. Result Accuracy:

   • Depends on the HTML structure of corresponding engines, may fail when engines update
   • Some results may lack metadata like descriptions
   • Complex search operators may not work as expected

3. Legal Terms:

   • This tool is for personal use only
   • Please comply with the terms of service of corresponding engines
   • Implement appropriate rate limiting based on your actual use case

4. Search Engine Configuration:

   • Default search engine can be set via the DEFAULT_SEARCH_ENGINE environment variable
   • Supported engines: bing, duckduckgo, exa, brave
   • The default engine is used when searching specific websites

5. Proxy Configuration:

   • HTTP proxy can be configured when certain search engines are unavailable in specific regions
   • Enable proxy with environment variable USE_PROXY=true
   • Configure proxy server address with PROXY_URL

Contributing

Welcome to submit issue reports and feature improvement suggestions!

Contributor Guide

If you want to fork this repository and publish your own Docker image, you need to make the following configurations:

GitHub Secrets Configuration

To enable automatic Docker image building and publishing, please add the following secrets in your GitHub repository settings (Settings → Secrets and variables → Actions):

Required Secrets:

• GITHUB_TOKEN: Automatically provided by GitHub (no setup needed)

Optional Secrets (for Alibaba Cloud ACR):

• ACR_REGISTRY: Your Alibaba Cloud Container Registry URL (e.g., registry.cn-hangzhou.aliyuncs.com)
• ACR_USERNAME: Your Alibaba Cloud ACR username
• ACR_PASSWORD: Your Alibaba Cloud ACR password
• ACR_IMAGE_NAME: Your image name in ACR (e.g., your-namespace/open-web-search)

CI/CD Workflow

The repository includes a GitHub Actions workflow (.github/workflows/docker.yml) that automatically:

1. Trigger Conditions:

   • Push to main branch
   • Push version tags (v*)
   • Manual workflow trigger

2. Build and Push to:

   • GitHub Container Registry (ghcr.io) - always enabled
   • Alibaba Cloud Container Registry - only enabled when ACR secrets are configured

3. Image Tags:

   • ghcr.io/your-username/open-web-search:latest
   • your-acr-address/your-image-name:latest (if ACR is configured)

Fork and Publish Steps:

1. Fork the repository to your GitHub account
2. Configure secrets (if you need ACR publishing):
   • Go to Settings → Secrets and variables → Actions in your forked repository
   • Add the ACR-related secrets listed above
3. Push changes to the main branch or create version tags
4. GitHub Actions will automatically build and push your Docker image
5. Use your image, update the Docker command:

   docker run -d --name web-search -p 3000:3000 -e ENABLE_CORS=true -e CORS_ORIGIN=* ghcr.io/your-username/open-web-search:latest

Notes:

• If you don't configure ACR secrets, the workflow will only publish to GitHub Container Registry
• Make sure your GitHub repository has Actions enabled
• The workflow will use your GitHub username (converted to lowercase) as the GHCR image name

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