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Aperion Shield

Local guardrail proxy that blocks destructive MCP tool calls, rug pulls, and tool poisoning

build.protocol_tooling.mcp

Install Aperion Shield in your MCP client

Aperion Shield is a Model Context Protocol server. Add it to your MCP client config once, restart, and the server's tools become available to your AI assistant. The same JSON snippet below works across all four major clients — only the config file path differs.

  1. Locate your client's MCP config file.
    • Cursor: ~/.cursor/mcp.json
    • Claude Desktop (macOS): ~/Library/Application Support/Claude/claude_desktop_config.json
    • Claude Desktop (Windows): %APPDATA%\Claude\claude_desktop_config.json
    • VS Code: Settings → Extensions → MCP
    • Windsurf: Settings → MCP Servers
  2. Add Aperion Shield to the mcpServers map — paste the snippet below into your config file. If you already have other MCP servers, merge the entry into the existing mcpServers object.
  3. Restart your client so it picks up the new server.
  4. Verify — ask the assistant to list available tools; Aperion Shield's tools should appear.
{
  "mcpServers": {
    "aperion-shield": {
      "command": "npx",
      "args": [
        "-y",
        "@aperion-shield/mcp-server"
      ],
      "note": "Replace with the actual package name from the server's documentation."
    }
  }
}

Install Aperion Shield in Cursor

Open ~/.cursor/mcp.json in your editor, paste the snippet above into mcpServers, save, and restart Cursor. Aperion Shield will show up in the assistant's tool list on next launch.

Install Aperion Shield in Claude Desktop (macOS)

Open ~/Library/Application Support/Claude/claude_desktop_config.json in your editor, paste the snippet above into mcpServers, save, and restart Claude Desktop (macOS). Aperion Shield will show up in the assistant's tool list on next launch.

Install Aperion Shield in Claude Desktop (Windows)

Open %APPDATA%\Claude\claude_desktop_config.json in your editor, paste the snippet above into mcpServers, save, and restart Claude Desktop (Windows). Aperion Shield will show up in the assistant's tool list on next launch.

Install Aperion Shield in VS Code

Open Settings → Extensions → MCP in your editor, paste the snippet above into mcpServers, save, and restart VS Code. Aperion Shield will show up in the assistant's tool list on next launch.

Transport

Aperion Shield supports the following MCP transports. Most AI clients use stdio by default for locally-installed servers.

stdio

Other Model Context Protocol servers in the same space as Aperion Shield. Each one adds different capabilities to your AI assistant — pick based on the data sources or workflows you need.

Browse the full MCP server directory or use Stork's one-line install to let your agent pick the right server automatically.