profiling

profiling is a skill for Claude Code, Codex from AntheaLaffy/the-missing-semester-skills. It costs 106 tokens per session (1,142 once invoked), scanned A, original, no licence file.

A performance-analysis toolkit for measuring execution time, system resources, CPU and memory use, and benchmark results. Profiling means measuring where a program spends time or memory so bottlenecks can be found.

In plain words
What is it for?
Running time and resource checks, CPU or memory profiling, flame graphs, callgrind analysis, data cleanup, plots, and hyperfine benchmarks.
Why use it?
It helps identify slow code, excessive resource use, and changes in tool performance with measurements rather than guesses.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Running time and resource checks, CPU or memory profiling, flame graphs, callgrind analysis, data cleanup, plots, and hyperfine benchmarks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/anthealaffy/the-missing-semester-skills/profiling
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 AntheaLaffy/the-missing-semester-skills --skill profiling
Clone the repo
git clone --depth 1 https://github.com/AntheaLaffy/the-missing-semester-skills

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/anthealaffy/the-missing-semester-skills/profiling/github.svg)](https://agentmods.dev/skills/anthealaffy/the-missing-semester-skills/profiling)
Your own site
<a href="https://agentmods.dev/skills/anthealaffy/the-missing-semester-skills/profiling"><img src="https://agentmods.dev/badge/skills/anthealaffy/the-missing-semester-skills/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 profiling

Your own site · 80×15
<a href="https://agentmods.dev/skills/anthealaffy/the-missing-semester-skills/profiling"><img src="https://agentmods.dev/badge/skills/anthealaffy/the-missing-semester-skills/profiling.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,142 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00106 $0.01142
Opus 5 $0.00053 $0.00571
Sonnet 5 $0.00021 $0.00228
Haiku 4.5 $0.00011 $0.00114

Measured 10d ago against content hash 941810994702, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

profiling scanned grade A with 1 finding 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 10d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- 墙钟时间会骗人(别的进程在抢 CPU、在等事件)。`time` 区分三个值:Real 墙钟全程、User 用户态 CPU 时间、Sys 内核态 CPU 时间。例:`time curl` real 272ms,user+sys 只有 107ms——其余在等网络。
profiling/SKILL.md · 52 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file 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. 10d ago First seen · 52 lines · 106 tokens per session scan A 941810994702

Subscribe to this mod's changes

profiling is a skill published in the GitHub repository AntheaLaffy/the-missing-semester-skills (1 stars, last pushed 10d ago), with no licence file. It adds 106 tokens to every session and 1,142 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

plumb-line-remediate

Use when applying findings from a plumb-line audit report — the builder has a report (or pasted findings) and wants the fixes made. Opt-in and separate from the audit, which is read-only and never fixes.

slopstopper/plumb-line · 51 tokens

audit-quality-gates

Use this skill when the user wants to audit how a project configures its style checkers and static analyzers.

yegor256/purist · 29 tokens

craft-fix

The Craftsman standard for driving fixes against an existing craft-audit workspace — "fix the findings", "fix SEC-003", "work through the audit", "start the climb". An ACTION skill, not a domain: it picks findings off the master tracker's climb sequence, re-verifies each is still real, gets the user's approval, and…

gul-labs/craftsman-marketplace · 182 tokens

deslop

Audit and harden existing codebases (especially AI-generated / vibe-coded ones) for production readiness. Use when the user asks to review, audit, clean up, harden, deslop, refactor, or fix quality issues across an existing codebase. Works in two phases — first a thorough multi-pass audit written to a structured file…

thtskaran/claude-skills · 103 tokens

loud-errors

Use when you spot a swallowed, vague, or context-losing error — an empty catch, a bare except: pass, catch (e) { console.log(e) } that then continues, throw new Error("something went wrong"), an error logged then ignored, or a caught exception that drops its cause. Makes failures loud and specific: each error says…

mikestangdevs/craft-skills · 138 tokens

delete-this

Use when a codebase feels heavy, when you suspect dead code, or before adding a feature to an area that's already cluttered. Finds and safely removes code that no longer earns its place — dead branches, unused exports, commented-out blocks, abandoned feature flags, speculative abstractions used once, and TODOs from a…

mikestangdevs/craft-skills · 102 tokens