Kesslerio Attio MCP Server vs Perfex CRM

In-depth architectural comparison of the Kesslerio Attio MCP Server and Perfex CRM 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 Kesslerio Attio MCP Server when:

• You need dedicated capabilities in the Customer Data Platforms domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Kesslerio Attio MCP Server Details

Choose Perfex CRM when:

• You need dedicated capabilities in the Customer Data Platforms domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Perfex CRM Details

Feature & Specification Comparison

Specification	Kesslerio Attio MCP Server Customer Data Platforms	Perfex CRM Customer Data Platforms
Summary	Enable AI assistants to interact directly with your Attio CRM data through natural language querie…	Read and write a self-hosted Perfex CRM from an AI agent: 148 permission-filtered tools.
Category & Scope	Customer Data Platforms	Customer Data Platforms

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": {
    "kesslerio-attio-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "attio-discover"
      ]
    }
  }
}

{
  "mcpServers": {
    "perfex-crm": {
      "url": "https://yourdomain.com/api/mcp"
    }
  }
}

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