Run governed SQL queries and inspect database schemas from MCP agents.
To add SQL Preview to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 3 environment variables, listed below.
Install
npx -y sql-preview@0.6.28Environment variables
SQL_PREVIEW_CONNECTIONSSet in your MCP configSQL_PREVIEW_MCP_SAFE_MODESet in your MCP configSQL_PREVIEW_MAX_ROWSSet in your MCP configInstall with your client
claude mcp add sql-preview --env SQL_PREVIEW_CONNECTIONS=<YOUR_SQL_PREVIEW_CONNECTIONS> --env SQL_PREVIEW_MCP_SAFE_MODE=<YOUR_SQL_PREVIEW_MCP_SAFE_MODE> --env SQL_PREVIEW_MAX_ROWS=<YOUR_SQL_PREVIEW_MAX_ROWS> -- npx -y sql-preview@0.6.28
Run this in a terminal to add the server to Claude Code.
What this does
SQL Preview exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
SQL_PREVIEW_CONNECTIONS SQL_PREVIEW_MCP_SAFE_MODE SQL_PREVIEW_MAX_ROWS
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install SQL Preview?
Run the Claude Code command in the install section to add SQL Preview to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with SQL Preview?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to SQL Preview as well.
Does SQL Preview need an API key?
Yes. Before it can run, set these environment variables: SQL_PREVIEW_CONNECTIONS, SQL_PREVIEW_MCP_SAFE_MODE, SQL_PREVIEW_MAX_ROWS. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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