Umbra

Overview

Umbra is a Model Context Protocol server that evaluates the trustworthiness of AI-generated code by scanning repositories and monitoring agent file writes, delivering a 0-100 trust score. Any MCP-compatible AI assistant can invoke Umbra's tools directly during conversations or agent runs to assess code quality and safety.

Umbra runs entirely on your local machine through the npm package @elberacasa/umbra, which communicates over stdio. It requires no authentication and works immediately after installation with the v1.2.0 release. The project is released under the MIT license with source code available at elberacasa/umbra on GitHub.

Umbra appears in the AI & Agents category on mcp.site and integrates with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and others. If you maintain Umbra, claim this listing to earn the Verified badge and keep information accurate and up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "umbra": {
      "command": "npx",
      "args": [
        "-y",
        "@elberacasa/umbra"
      ]
    }
  }
}