Defenter Proxy vs MCP Seatbelt

In-depth architectural comparison of the Defenter Proxy and MCP Seatbelt 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 Defenter Proxy when:

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

Explore Defenter Proxy Details

Choose MCP Seatbelt when:

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

Explore MCP Seatbelt Details

Feature & Specification Comparison

Specification	Defenter Proxy Security	MCP Seatbelt Security
Summary	Security proxy that automatically wraps MCP servers with real-time monitoring and policy enforcement	MCP runtime security proxy. Blocks dangerous AI agent tool calls with a policy engine.
Category & Scope	Security	Security
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": {
    "defenter-proxy": {
      "command": "npx",
      "args": [
        "-y",
        "defenter-proxy"
      ]
    }
  }
}

{
  "mcpServers": {
    "mcp-seatbelt": {
      "command": "npx",
      "args": [
        "-y",
        "@kryptosai/mcp-seatbelt"
      ]
    }
  }
}

Related MCP Server Comparisons