MCP Audit vs Mastyf.ai

In-depth architectural comparison of the MCP Audit and Mastyf.ai 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 Mastyf.ai when:

• You need dedicated capabilities in the Security domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Three-stage tool-call enforcement, YAML policy engine with audit, warn, and block modes, Protection against injection, SSRF, exfiltration, and shell attacks.

Explore Mastyf.ai Details

Feature & Specification Comparison

Specification	MCP Audit P4ST4S Security	Mastyf.ai mastyf-ai Security
Summary	Transparent Go proxy that intercepts, signs, rate-limits, redacts, and audits all MCP JSON-RPC tool calls without modifying client or server.	Open-source runtime security proxy for MCP. Transparently intercepts every tools/call through an 18-class attack defense pipeline (prompt injection, SSRF, shell injection, SQL injection, credential exfil, polyglot attacks) with a YAML policy engine and 304-entry adversarial corpus. Trust scoring for npm MCP packages with 0-100 badges. Cloud dashboard, Docker image, Python SDK. MIT.
Category & Scope

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": {
    "mastyf-ai-mastyf-ai": {
      "url": "http://localhost:4000/mcp"
    }
  }
}

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