PerformanceMonitor
SQL Server Performance Monitor provides free, open-source performance monitoring and alerting for SQL Server and supported cloud SQL platforms. It collects performance data via scheduled T-SQL collectors (Full edition uses SQL Agent and installs a monitoring database; Lite edition runs a desktop app and stores data locally using DuckDB/Parquet), renders dashboards and plan visualizations, and includes a built-in MCP server offering read-only tools for AI-assisted analysis based on the collected monitoring data.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
README mentions credential storage in Windows Credential Manager with OS-level encryption and that collected data stays local/no telemetry. The Full installer includes a connection encryption option (--encrypt) and a trust-cert option, suggesting TLS controls exist. However, explicit guidance on MCP endpoint authentication/authorization, MCP tool security boundaries, and dependency/SBOM/CVE management are not shown in the provided content.
⚡ Reliability
Best When
You can install monitoring on (or query from) SQL Server instances you control and want on-prem/private performance telemetry plus local/embedded AI analysis.
Avoid When
You need a managed hosted service, a public REST API for programmatic access, or strict guarantees of minimal overhead with no local data persistence.
Use Cases
- • 24/7 SQL Server performance monitoring and alerting (blocking, deadlocks, high CPU)
- • Root-cause investigation using wait stats, blocking chains, deadlock graphs, memory grants, and execution plans
- • Baselining and capacity planning using historical trends from collected metrics
- • Operational dashboards for NOC-style server health at a glance
- • AI-assisted analysis via an embedded MCP server that queries the monitoring data
Not For
- • Use as a pure SaaS/API service without installing components
- • Environments where running SQL Agent jobs or creating an XE/collection workload is not permitted
- • Use cases requiring real-time metrics at very high cardinality without tuning collection schedules
Interface
Authentication
Auth is primarily database connection-based (Windows/SQL/Entra). MCP tools are described as read-only, but no explicit OAuth scope model is documented in the provided content.
Pricing
No pricing details beyond 'free, open-source' are present in the provided README excerpt.
Agent Metadata
Known Gotchas
- ⚠ MCP server tooling is described at a high level, but specifics (tool schemas, auth to the MCP endpoint, error codes) are not included in the provided content.
- ⚠ Full edition relies on SQL Agent jobs and scheduled collectors; ingestion latency depends on schedule and edition/target platform limitations.
- ⚠ Lite edition stores data locally and relies on desktop app configuration; agent runs should account for local storage/retention constraints.
Alternatives
Full Evaluation Report
Comprehensive deep-dive: security analysis, reliability audit, agent experience review, cost modeling, competitive positioning, and improvement roadmap for PerformanceMonitor.
AI-powered analysis · PDF + markdown · Delivered within 30 minutes
Package Brief
Quick verdict, integration guide, cost projections, gotchas with workarounds, and alternatives comparison.
Delivered within 10 minutes
Score Monitoring
Get alerted when this package's AF, security, or reliability scores change significantly. Stay ahead of regressions.
Continuous monitoring
Scores are editorial opinions as of 2026-03-30.