Midplane

Overview

Midplane is a Model Context Protocol (MCP) server: Safe-by-default SQL guardrails for AI agents: AST-checked queries, per-table policy, audit log. Because it speaks the Model Context Protocol, AI assistants can use Midplane as a set of callable tools instead of you copy-pasting between apps.

It runs locally: the npm package midplane speaks MCP over stdio on your machine. Configuration happens through environment variables — you'll need DATABASE_URL. The current release is v0.20.0, published under the MIT license, with source at midplaneai/midplane on GitHub.

On mcp.site, Midplane sits in the AI & Agents category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain Midplane for midplane.ai, claim this listing to verify ownership, earn the Verified badge, and keep the details current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "midplane": {
      "command": "npx",
      "args": [
        "-y",
        "midplane"
      ],
      "env": {
        "DATABASE_URL": "<database-url>"
      }
    }
  }
}

Requires DATABASE_URL