sqltrace-review

sqltrace-review is a skill for Claude Code, Codex from vanterx/mssql-performance-skills. It costs 111 tokens per session (6,473 once invoked), scanned A, original, MIT.

A review tool for SQL Server trace and Extended Events data, which records database activity such as queries, timings, resource use, and errors. It summarizes both individual events and patterns across the workload.

In plain words
What is it for?
Use it to analyze trace files or exported results, rank resource-consuming workloads, and investigate slow queries, repeated executions, parameter-related variation, locks, and warnings.
Why use it?
It reveals repeated or related problems that a single query record cannot show, such as frequent queries, inconsistent runtimes, recompilations, or correlated locks and spills.

Skill for Claude CodeCodex

Part of the mssql-performance-skills plugin — 26 skills, 3 hooks, 1 MCP server shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/vanterx/mssql-performance-skills/sqltrace-review
Any agent
npx skills add vanterx/mssql-performance-skills --skill sqltrace-review
Clone the repo
git clone --depth 1 https://github.com/vanterx/mssql-performance-skills

Made for: Claude Code, Codex.

Or install mssql-performance-skills, the plugin that ships this one along with the rest of its 26 skills, 3 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sqltrace-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/vanterx/mssql-performance-skills/sqltrace-review.svg)](https://agentmods.dev/skills/vanterx/mssql-performance-skills/sqltrace-review)
Your own site
<a href="https://agentmods.dev/skills/vanterx/mssql-performance-skills/sqltrace-review"><img src="https://agentmods.dev/badge/skills/vanterx/mssql-performance-skills/sqltrace-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,473 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00111 $0.06473
Opus 5 $0.00056 $0.03236
Sonnet 5 $0.00022 $0.01295
Haiku 4.5 $0.00011 $0.00647

Measured 5d ago against content hash 72fb0ce8099a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

sqltrace-review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/sqltrace-review/SKILL.md · 338 lines

How it starts

The opening of the file, as written. The whole thing — 338 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SQL Server Trace / Extended Events Review Skill

Purpose

Analyze workload-level diagnostic data from SQL Server Profiler traces (.trc), Extended Events sessions (.xel), sys.fn_trace_gettable() output, or XE session query results. Produce a ranked summary of top resource consumers and a prioritized findings report covering 25 checks (X1–X25) across event patterns and cross-event workload aggregates.

Trace analysis reveals patterns that no single-query artifact can show: which queries run thousands of times per minute, which have wildly inconsistent durations (parameter sniffing), how many recompilations are happening globally, and whether spill or lock events correlate with slow periods.

Input

Accept any of:

  • sys.fn_trace_gettable() query results — paste the tabular output (tab-separated, CSV, or grid)
  • Extended Events session query results — any column layout containing event name, SQL text, duration, CPU, reads
  • SSMS Profiler trace grid — copy-paste from the trace window
  • A .trc or .xel file path (describe what to extract if the file cannot be read directly)
  • A natural-language description of trace contents ("the trace shows 48,000 executions of a stored proc in 60 seconds, each reading 3,200 pages")

Duration units: SQL Profiler .trc Duration column = microseconds. Extended Events duration = microseconds. CPU units differ by event class: for SQL:BatchCompleted (EventClass 12), CPU is in milliseconds; for RPC:Completed (EventClass 10), CPU is in microseconds beginning with SQL Server 2012 (11.x), and in milliseconds in earlier versions. On SQL Server 2008 R2 and earlier, all trace CPU values were in milliseconds. Normalize all duration values to milliseconds before applying thresholds and displaying results.

Query normalization: Group events by normalized query text — replace literal values and parameter values with placeholders to identify the same logical query across executions. Example: SELECT * FROM Orders WHERE Id = 42 and SELECT * FROM Orders WHERE Id = 99 normalize to the same pattern.

Read the full file on GitHub · 338 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 338 lines · 111 tokens per session scan A 72fb0ce8099a

Subscribe to this mod's changes

sqltrace-review is a skill published in the GitHub repository vanterx/mssql-performance-skills (5 stars, last pushed 1mo ago), licensed MIT. It adds 111 tokens to every session and 6,473 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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