Open WebSearch vs Crw

In-depth architectural comparison of the Open WebSearch and Crw MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Open WebSearch when:

• You need dedicated capabilities in the Search & Data Extraction domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• You have access to required keys: USE_PROXY, PROXY_URL.
• Primary tools included: Multi-engine web search: Bing, Baidu, DuckDuckGo, Brave, Exa, CSDN, and others, No API keys or authentication required, Structured search results with titles, URLs, and descriptions.

Explore Open WebSearch Details

Choose Crw when:

• You need dedicated capabilities in the Search & Data Extraction domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Freemium).
• You have access to required keys: CRW_API_KEY.
• Primary tools included: .

Feature & Specification Comparison

Specification	Open WebSearch Aas-ee Search & Data Extraction	Crw us Search & Data Extraction
Summary	Web search using free multi-engine search (NO API KEYS REQUIRED) — Supports Bing, Baidu, DuckDuckGo, Brave, Exa, and CSDN.	fastCRW — open-source (AGPL-3.0), self-hostable Rust web crawler & search API for AI agents. Tools: scrape, crawl, map, and SearXNG-backed search. Single 6MB static binary; reproducible 1K-URL benchmarks faster than hosted alternatives. Hosted MCP at fastcrw.com/mcp (Streamable HTTP, OAuth) or self-host.
Category & Scope	Search & Data Extraction

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "aas-ee-open-websearch": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ],
      "env": {
        "USE_PROXY": "YOUR_USE_PROXY_HERE",
        "PROXY_URL": "YOUR_PROXY_URL_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "us-crw": {
      "command": "npx",
      "args": [
        "-y",
        "crw-mcp"
      ],
      "env": {
        "CRW_API_KEY": "YOUR_CRW_API_KEY_HERE"
      }
    }
  }
}

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