PerformanceMonitor
Free open-source SQL Server and Postgres performance monitor with a built-in MCP server for AI analysis of waits, plans, alerts and more.
README: the Dashboard edition is deprecated ("Existing installs only — new deployments should use Lite or Darling"). Lite and Darling are current.
Read the source ↗What it does
Summarized from README ↗Erik Darling's free SQL Server (and Postgres) performance monitor. Lite, Darling and a deprecated Dashboard edition all embed an MCP server so Claude or Cursor can ask about waits, CPU, blocking, Query Store and plan analysis from the collected store — without running agent-written SQL on your servers.
Key capabilities
get_server_summary / get_wait_statsget_top_queries_by_cpu / get_query_store_topget_deadlocks / get_blocked_process_reportsanalyze_query_plan / analyze_serverget_alert_historyget_running_jobs
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