Agent Output Guard vs MCP Customs

In-depth architectural comparison of the Agent Output Guard and MCP Customs 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 Agent Output Guard 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 Agent Output Guard Details

Choose MCP Customs 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 MCP Customs Details

Feature & Specification Comparison

Specification	Agent Output Guard Developer Tools	MCP Customs Developer Tools
Summary	Validate and verify data from other agents before acting on it. Zero LLM costs.	Inspect an MCP server for common security risks before you install it. Offline, zero telemetry.
Category & Scope	Developer Tools	Developer Tools

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": {
    "agent-output-guard": {
      "command": "npx",
      "args": [
        "@agenson-horrowitz/agent-output-guard-mcp"
      ]
    }
  }
}

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

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