MCP Servers Kagi vs Nexus

In-depth architectural comparison of the MCP Servers Kagi and Nexus 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 MCP Servers Kagi 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 (BYOK (Pay Provider Direct)).
• You have access to required keys: KAGI_API_KEY.
• Primary tools included: Kagi web search through MCP, Optional result limit parameter, TypeScript implementation.

Explore MCP Servers Kagi Details

Choose Nexus 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 (BYOK (Pay Provider Direct)).
• You have access to required keys: OPENROUTER_API_KEY.
• Primary tools included: .

Feature & Specification Comparison

Specification	MCP Servers Kagi ac3xx Search & Data Extraction	Nexus adawalli Search & Data Extraction
Summary	A Model Context Protocol server implementation for Kagi's API	AI-powered web search server using Perplexity Sonar models with source citations. Zero-install setup via NPX.
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": {
    "ac3xx-mcp-servers-kagi": {
      "command": "npx",
      "args": [
        "-y",
        "ac3xx-mcp-servers-kagi"
      ],
      "env": {
        "KAGI_API_KEY": "YOUR_KAGI_API_KEY_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "adawalli-nexus": {
      "command": "bunx",
      "args": [
        "nexus-mcp"
      ],
      "env": {
        "OPENROUTER_API_KEY": "YOUR_OPENROUTER_API_KEY_HERE"
      }
    }
  }
}

Related MCP Server Comparisons