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Grok

NexQL Postgres MCP for Grok

io.github.nexql-oss/nexql-mcp

Standalone Postgres MCP server — schema-aware, read-only by default, installable everywhere.

client:Grok transport:stdio runtime:npm

Install NexQL Postgres MCP in Grok

.mcp.json (in your project root)

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

{
  "mcpServers": {
    "nexql-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "nexql-mcp"
      ],
      "env": {
        "DATABASE_URL": "<DATABASE_URL>",
        "NEXQL_MCP_CONFIG": "<NEXQL_MCP_CONFIG>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

NexQL Postgres MCP in other clients

NexQL Postgres MCP MCP server