profiling-transaction-fingerprints

profiling-transaction-fingerprints is a skill for Claude Code, Codex from cockroachdb/cursor-plugin. It costs 80 tokens per session (4,724 once invoked), scanned A, a copy of profiling-transaction-fingerprints, Apache-2.0.

A SQL-based analyzer for historical transaction statistics in CockroachDB, a distributed SQL database.

In plain words
What is it for?
Use it to investigate retry storms, contention at transaction boundaries, commit-latency trends, and problematic transaction compositions.
Why use it?
It helps identify which groups of database statements are linked to retries, lock contention, or slow commits over a chosen time window.

Skill for Claude CodeCodex

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/cockroachdb/cursor-plugin/profiling-transaction-fingerprints
Any agent
npx skills add cockroachdb/cursor-plugin --skill profiling-transaction-fingerprints
Clone the repo
git clone --depth 1 https://github.com/cockroachdb/cursor-plugin

Made for: Claude Code, Codex.

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 profiling-transaction-fingerprints

README.md
[![agentmods](https://agentmods.dev/badge/skills/cockroachdb/cursor-plugin/profiling-transaction-fingerprints.svg)](https://agentmods.dev/skills/cockroachdb/cursor-plugin/profiling-transaction-fingerprints)
Your own site
<a href="https://agentmods.dev/skills/cockroachdb/cursor-plugin/profiling-transaction-fingerprints"><img src="https://agentmods.dev/badge/skills/cockroachdb/cursor-plugin/profiling-transaction-fingerprints.svg" alt="Measured on agentmods" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,724 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00080 $0.04724
Opus 5 $0.00040 $0.02362
Sonnet 5 $0.00016 $0.00945
Haiku 4.5 $0.00008 $0.00472

Measured 3d ago against content hash d1c2effea35e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

profiling-transaction-fingerprints 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 3d 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.

Origin

This is a copy

100% identical to profiling-transaction-fingerprints — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/cockroachdb-observability-and-diagnostics/profiling-transaction-fingerprints/SKILL.md · 395 lines

How it starts

The opening of the file, as written. The whole thing — 395 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Profiling Transaction Fingerprints

Analyzes historical transaction performance patterns using aggregated SQL statistics to identify high-retry transactions, contention patterns, and commit latency issues. Uses crdb_internal.transaction_statistics for time-windowed analysis of retry behavior, commit latency, and statement composition - entirely via SQL without requiring DB Console access.

Complement to profiling-statement-fingerprints: This skill analyzes transaction-level patterns (groups of statements with retry behavior); for statement-level optimization, see profiling-statement-fingerprints.

Complement to triaging-live-sql-activity: This skill analyzes historical transaction patterns; for immediate triage of currently active transactions, see triaging-live-sql-activity.

When to Use This Skill

  • Identify transactions with high retry counts
  • Analyze commit latency trends for transaction fingerprints
  • Find transactions with high contention at transaction boundary
  • Understand statement composition of problematic transactions
  • Investigate transaction retry storms or abort patterns
  • SQL-only historical transaction analysis without DB Console access

For immediate incident response: Use triaging-live-sql-activity to triage currently active transactions and cancel runaway work. For statement-level optimization: Use profiling-statement-fingerprints to analyze individual query patterns.

Prerequisites

  • SQL connection to CockroachDB cluster
  • VIEWACTIVITY or VIEWACTIVITYREDACTED cluster privilege for cluster-wide visibility
    • Same privilege requirements as profiling-statement-fingerprints
  • Understanding of transaction performance concepts
  • Transaction statistics collection enabled (default): sql.stats.automatic_collection.enabled = true

Check transaction stats collection:

SHOW CLUSTER SETTING sql.stats.automatic_collection.enabled;
-- Should return: true

Read the full file on GitHub · 395 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 395 lines · 80 tokens per session scan A d1c2effea35e

Subscribe to this mod's changes

profiling-transaction-fingerprints is a skill published in the GitHub repository cockroachdb/cursor-plugin (1 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 80 tokens to every session and 4,724 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to profiling-transaction-fingerprints, differing in 0 lines, and is treated as a copy.

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