AreaCode.fyi MCP Server vs Sem

In-depth architectural comparison of the AreaCode.fyi MCP Server and Sem 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?

A

Choose AreaCode.fyi MCP Server when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: lookup_area_code, lookup_phone_number, lookup_carrier.

Explore AreaCode.fyi MCP Server Details

Choose Sem when:

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

Explore Sem Details

Feature & Specification Comparison

Specification	A AreaCode.fyi MCP Server Developer Tools	Sem Developer Tools
Summary	North American (NANP) area-code & phone-number intelligence for AI agents, by areacode.fyi.	Entity-level code intelligence: semantic diff, impact analysis, blame, and context for AI agents
Category & Scope	Developer Tools	Developer Tools
Quality signal

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": {
    "areacode-fyi-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@riv-lc/areacode-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "sem": {
      "command": "npx",
      "args": [
        "-y",
        "sem"
      ]
    }
  }
}

Related MCP Server Comparisons