404.directory vs Kaval

In-depth architectural comparison of the 404.directory and Kaval 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?

4

Choose 404.directory 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 404.directory Details

Choose Kaval 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 Kaval Details

Feature & Specification Comparison

Specification	4 404.directory Developer Tools	Kaval Developer Tools
Summary	Read-only tools for agents to understand public webpages and verify deployments with evidence.	Freshness gate for AI agents: verify a belief is still true against the live world before you act.
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": {
    "404-directory": {
      "command": "npx",
      "args": [
        "-y",
        "404-directory"
      ]
    }
  }
}

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

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