404.directory MCP Server

io.github.MM-sheng/404-directory

Repository Registry

What is the 404.directory MCP server?

Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks.

How to install 404.directory

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

X-404-Agent-ID
required
Stable random, non-personal identifier for this Agent installation. Used only for privacy-safe de-duplicated adoption measurement; never use an email, user name, or device name.
X-404-Source
Non-personal attribution label for this installation source.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "404-directory": {
      "command": "npx",
      "args": [
        "-y",
        "@mmvv1638/404-directory-mcp",
        "--source",
        "official-registry"
      ],
      "env": {
        "X-404-Agent-ID": "<YOUR_X_404_AGENT_ID>",
        "X-404-Source": "<YOUR_X_404_SOURCE>"
      }
    }
  }
}