Let coding agents query any SQL database safely. Read-only by default and scoped by your policies.
To add valv 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 8 environment variables, listed below.
Install
npx -y @valv/mcp@0.6.2Environment variables
DATABASE_URLSet in your MCP configVALV_PROVIDERSet in your MCP configVALV_DATABASESet in your MCP configVALV_TABLESSet in your MCP configVALV_EXCLUDESet in your MCP configVALV_POLICY_FILESet in your MCP configVALV_CONTEXTSet in your MCP configVALV_HTTP_PORTSet in your MCP configInstall with your client
claude mcp add valv --env DATABASE_URL=<YOUR_DATABASE_URL> --env VALV_PROVIDER=<YOUR_VALV_PROVIDER> --env VALV_DATABASE=<YOUR_VALV_DATABASE> --env VALV_TABLES=<YOUR_VALV_TABLES> --env VALV_EXCLUDE=<YOUR_VALV_EXCLUDE> --env VALV_POLICY_FILE=<YOUR_VALV_POLICY_FILE> --env VALV_CONTEXT=<YOUR_VALV_CONTEXT> --env VALV_HTTP_PORT=<YOUR_VALV_HTTP_PORT> -- npx -y @valv/mcp@0.6.2
Run this in a terminal to add the server to Claude Code.
What this does
valv 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:
DATABASE_URL VALV_PROVIDER VALV_DATABASE VALV_TABLES VALV_EXCLUDE VALV_POLICY_FILE VALV_CONTEXT VALV_HTTP_PORT
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install valv?
Run the Claude Code command in the install section to add valv 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 valv?
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 valv as well.
Does valv need an API key?
Yes. Before it can run, set these environment variables: DATABASE_URL, VALV_PROVIDER, VALV_DATABASE, VALV_TABLES, VALV_EXCLUDE, VALV_POLICY_FILE, VALV_CONTEXT, VALV_HTTP_PORT. 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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