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mcp/harbor
Cursor

Grain for Cursor

io.github.pattrnlabs/grain

Run SQL queries and inspect database schemas through safe, visible MCP tools.

client:Cursor transport:stdio runtime:npm

Install Grain in Cursor

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

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "grain": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "grain-tools"
      ],
      "env": {
        "GRAIN_CONNECTIONS": "<GRAIN_CONNECTIONS>",
        "GRAIN_MCP_SAFE_MODE": "<GRAIN_MCP_SAFE_MODE>",
        "GRAIN_MAX_ROWS": "<GRAIN_MAX_ROWS>"
      }
    }
  }
}

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

Grain in other clients

Grain MCP server