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mcp/harbor
Claude Code

Grain for Claude Code

io.github.pattrnlabs/grain

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

client:Claude Code transport:stdio runtime:npm

Install Grain in Claude Code

run in your project directory

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

claude mcp add grain -e GRAIN_CONNECTIONS=<GRAIN_CONNECTIONS> -e GRAIN_MCP_SAFE_MODE=<GRAIN_MCP_SAFE_MODE> -e GRAIN_MAX_ROWS=<GRAIN_MAX_ROWS> -- npx -y grain-tools

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

Grain in other clients

Grain MCP server