Agent Output Guard vs MCP Probe

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

Feature & Specification Comparison

Specification	Agent Output Guard Developer Tools	MCP Probe Developer Tools
Summary	Validate and verify data from other agents before acting on it. Zero LLM costs.	Inspect and score any MCP server 0-100 on publishability, schema and protocol before publish.
Category & Scope	Developer Tools	Developer Tools
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": {
    "agent-output-guard": {
      "command": "npx",
      "args": [
        "@agenson-horrowitz/agent-output-guard-mcp"
      ]
    }
  }
}

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

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