Database Sentinel MCP server

Database Sentinel is a free helper that checks your Supabase database for common security mistakes. You ask your AI to audit the database, and it comes back with a scored report and the exact code to fix each problem. It is handy for anyone who built an app with Supabase and is not sure whether their data is really locked down.

What this MCP server does

You ask your AI to audit your Supabase database. The AI uses this helper, which reads only the database's system catalogs, never your actual rows. The helper checks for patterns like tables with Row Level Security turned off, policies that allow everyone, exposed functions, and keys that should not be in frontend code. It then gives the AI a list of findings, each with a severity, a plain explanation, and the SQL code to fix it. The AI shows you a scored report in the chat.

What you can do with it

• Check whether Row Level Security is turned on for every table
• Find policies that are too permissive, like USING (true)
• Spot functions that bypass security and are callable from the API
• Detect if a service-role key or JWT secret is exposed in your code
• Get exact SQL fix code for each finding
• See a score out of 100 for your database's security
• Run the audit without changing anything in your database

Try asking your AI

• “Audit my Supabase database”
• “Check my Supabase project for security problems”
• “Show me the critical findings and how to fix them”
• “What is my database security score?”

What it gives back to you

You get a scored report in the chat, usually with a score out of 100 and a list of findings grouped by severity. Each finding explains the risk in plain words, shows where it was found, and includes the SQL code to fix it. Nothing in your database is changed.

Before you start

Who it's for

Anyone who built an app with Supabase and wants a quick, free security check without hiring a specialist.

Jobs it suits