Culprit SQL Studio
Find slow SQL queries and get a one-sentence fix
Free - Free and open-source (desktop app, CLI and MCP server)
About Culprit SQL Studio
Culprit SQL Studio locates slow queries across SQL Server, PostgreSQL, MySQL and MariaDB, diagnoses the root cause from execution plans, and recommends a concise, actionable fix. Delivered as a free open-source desktop app with a CLI and an MCP server, it highlights costly operators (e.g., repeated reads, loop joins), shows plan statistics and verification steps, and helps developers and DBAs speed troubleshooting and reduce database time.
Key Features
- Detect slow queries and surface the root cause from execution plans
- Provide a one-sentence, actionable fix for each problem query
- Supports SQL Server, PostgreSQL, MySQL and MariaDB
- Available as a desktop app, command-line tool and MCP server
- Execution-plan analysis with verification recommendations (run with actual rows)
Who is this for?
Developers and DBAs who need to find and fix slow SQL queries quickly
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FreeFree and open-source (desktop app, CLI and MCP server)
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