MCP Audit vs R2mcp

In-depth architectural comparison of the MCP Audit and R2mcp 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 MCP Audit 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).
• Primary tools included: Stdio and HTTP MCP proxying, JSONL and SQLite audit storage, HMAC-SHA256 audit signing.

Explore MCP Audit Details

Choose R2mcp when:

• You need dedicated capabilities in the Security domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: R2MCP_AUTH_TOKEN.
• Primary tools included: Native C implementation using radare2 APIs, Supports CLI, r2 plugin, and HTTP MCP server modes, Connects to local or remote radare2/iaito sessions via r2pipe.

Feature & Specification Comparison

Specification	MCP Audit P4ST4S Security	R2mcp radareorg Security
Summary	Transparent Go proxy that intercepts, signs, rate-limits, redacts, and audits all MCP JSON-RPC tool calls without modifying client or server.	MCP server for Radare2 disassembler. Provides AI with capability to disassemble and look into binaries for reverse engineering.
Category & Scope	Security

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": {
    "p4st4s-mcp-audit": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem"
      ]
    }
  }
}

{
  "mcpServers": {
    "radareorg-r2mcp": {
      "command": "npx",
      "args": [
        "-y",
        "radareorg-r2mcp"
      ],
      "env": {
        "R2MCP_AUTH_TOKEN": "YOUR_R2MCP_AUTH_TOKEN_HERE"
      }
    }
  }
}

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