agentmods.dev

cpu-profiling

cpu-profiling is a skill for Claude Code, Codex from aj-geddes/useful-ai-prompts. It costs 31 tokens per session (456 once invoked), scanned A, original, MIT.

A guide to CPU profiling, which measures where a program spends its processing time.

In plain words
What is it for?
Use it to inspect function timings, call frequency, flame charts, and the difference between total and self time.
Why use it?
It helps locate the functions causing slow execution, high CPU use, or performance regressions before optimizing code.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 376repo +1 8mo ago A scan Socket: passSnyk: pass 31 tokens original MIT

Good fit Use it to inspect function timings, call frequency, flame charts, and the difference between total and self time.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aj-geddes/useful-ai-prompts/cpu-profiling
View source ↗ aj-geddes/useful-ai-prompts
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.

Any agent
npx skills add aj-geddes/useful-ai-prompts --skill cpu-profiling
Clone the repo
git clone --depth 1 https://github.com/aj-geddes/useful-ai-prompts

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 cpu-profiling

README.md
[![agentmods](https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/cpu-profiling/github.svg)](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/cpu-profiling)
Your own site
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/cpu-profiling"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/cpu-profiling/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cpu-profiling

Your own site · 80×15
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/cpu-profiling"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/cpu-profiling.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 456 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 16 Sept 2026
  • Snyk pass 16 Sept 2026
How audits are shown
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 $0.00031 $0.00456
Opus 5.5 $0.00012 $0.00182
Sonnet 5.5 $0.00006 $0.00091
Haiku 4.5 $0.00003 $0.00046

Measured 2mo ago against content hash 60121cc082d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cpu-profiling 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 2mo 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/cpu-profiling/SKILL.md · 88 lines

What it actually says

CPU Profiling

Table of Contents

Overview

CPU profiling identifies which functions consume most CPU time, enabling targeted optimization of expensive code paths.

When to Use

  • High CPU usage
  • Slow execution
  • Performance regression
  • Before optimization
  • Production monitoring

Quick Start

Minimal working example:

Browser Profiling:

Chrome DevTools:
  Steps:
    1. DevTools → Performance
    2. Click record
    3. Perform action
    4. Stop recording
    5. Analyze flame chart
  Metrics:
    - Function call duration
    - Call frequency
    - Total time vs self time

Firefox Profiler:
  - Built-in performance profiler
  - Flame graphs
  - Timeline view
  - Export and share

React Profiler:
  - DevTools → Profiler
  - Component render times
  - Phase: render vs commit
  - Why component re-rendered
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide Contents
Profiling Tools Profiling Tools
Analysis & Interpretation Analysis & Interpretation
Optimization Process Optimization Process
Monitoring & Best Practices Monitoring & Best Practices

Best Practices

✅ DO

  • Follow established patterns and conventions
  • Write clean, maintainable code
  • Add appropriate documentation
  • Test thoroughly before deploying

❌ DON'T

  • Skip testing or validation
  • Ignore error handling
  • Hard-code configuration values
Files

What ships with it

5 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. 2mo ago First seen · 88 lines · 31 tokens per session scan A 60121cc082d2

Subscribe to this mod's changes

cpu-profiling is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 31 tokens to every session and 456 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-03.

Debugging
Related

cpu-profiling compared with skills from other repositories

cpu-profiling next to 6 skills from other repositories
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cpu-profilingaj-geddes/useful-ai-promptsSkill3768mo agoMITA31Claude Code, Codex
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log-error-digestzebbern/claude-code-guideSkill4.7k3d agoMITA71Claude Code, Codex
cwv-optimizeradobe/skillsSkill319yesterdayApache-2.0A112Claude Code
ci-fixersipyourdrink-ltd/bernsteinSkill1.2kyesterdayApache-2.0A15Claude Code, Codex
incident-response-incident-responsermyndharis/antigravity-skillsSkill1.9k23d agoMITA36Claude Code
triaging-web-analytics-supportPostHog/posthogSkill41kyesterdaynoneA151Claude Code, Codex