M365 Graph MCP vs Abnormal Security MCP

In-depth architectural comparison of the M365 Graph MCP and Abnormal Security 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?

M

Choose M365 Graph MCP when:

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

Explore M365 Graph MCP Details

Choose Abnormal Security MCP when:

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

Explore Abnormal Security MCP Details

Feature & Specification Comparison

Specification	M M365 Graph MCP Communication	Abnormal Security MCP Communication
Summary	Manage Microsoft 365 email, calendar, contacts and inbox rules via the Graph API with OAuth 2.0.	Abnormal Security email threats, cases, and reporting in your terminal and your AI agents.
Category & Scope	Communication	Communication

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": {
    "m365-graph-mcp": {
      "url": "https://gitlab.com/eguardian1/m365-graph-mcp"
    }
  }
}

{
  "mcpServers": {
    "abnormal-security-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ]
    }
  }
}

Related MCP Server Comparisons