FirstSales MCP vs Xaffinity MCP

In-depth architectural comparison of the FirstSales MCP and Xaffinity MCP 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?

F

Choose FirstSales MCP when:

• You need dedicated capabilities in the Customer Data Platforms domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: OAuth 2.0 (Paid Service).

Explore FirstSales MCP Details

Choose Xaffinity MCP 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 Xaffinity MCP Details

Feature & Specification Comparison

Specification	F FirstSales MCP Customer Data Platforms	Xaffinity MCP Customer Data Platforms
Summary	Official hosted FirstSales CRM MCP. Retrieve contacts, deals, lists and workflow data, and create contacts in an approved workspace. Connect to https://api.app.firstsales.io/mcp using Streamable HTTP and OAuth with PKCE. Requires an eligible paid FirstSales account.	MCP server for Affinity CRM - entity search, relationship intelligence, and workflow management
Category & Scope	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": {
    "firstsales-mcp": {
      "url": "https://api.app.firstsales.io/mcp"
    }
  }
}

{
  "mcpServers": {
    "xaffinity-mcp": {
      "command": "uvx",
      "args": [
        "affinity-sdk"
      ]
    }
  }
}

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