Skip to content
mcp/harbor
Cursor

MCP Output Firewall for Cursor

io.github.tangfei7777-cell/mcp-output-firewall

Three-layer firewall for MCP: content, egress and action policy. Proxy or server.

client:Cursor transport:stdio runtime:npm

Install MCP Output Firewall in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json 

{
  "mcpServers": {
    "mcp-output-firewall": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-output-firewall"
      ]
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

MCP Output Firewall in other clients

MCP Output Firewall MCP server