OPA MCP

Overview

OPA MCP is a Model Context Protocol server that lets you author, validate, debug, and explain OPA Rego policies directly through any MCP-compatible client. Instead of switching between tools, AI assistants can call OPA MCP as a native set of tools to work with your authorization policies.

The server runs locally via the npm package @orygn/opa-mcp, speaking MCP over stdio on your machine. Install it with npx -y @orygn/opa-mcp. Version v0.3.0 is available now under the MIT license, with full source code at OrygnsCode/opa-mcp-server on GitHub.

OPA MCP is listed in the AI & Agents category on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this server, claim your listing to verify ownership and keep the information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "opa_mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@orygn/opa-mcp"
      ]
    }
  }
}