profile-performance

profile-performance is a skill for Claude Code from timholy/claude_config. It costs 95 tokens per session (3,258 once invoked), scanned A, original, no licence file.

A headless performance-profiling workflow for Julia code, meaning it runs without a graphical interface. It looks for CPU hot spots, runtime dispatch, garbage-collection pressure, allocations, and type instability.

In plain words
What is it for?
Use it to investigate Julia performance problems and identify code areas that need optimisation.
Why use it?
It helps locate the parts of a program that make it slow or use more memory than necessary.

Skill for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Good fit Use it to investigate Julia performance problems and identify code areas that need optimisation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/timholy/claude_config/profile-performance
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 timholy/claude_config --skill profile-performance
Clone the repo
git clone --depth 1 https://github.com/timholy/claude_config

Made for: Claude Code.

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 profile-performance

README.md
[![agentmods](https://agentmods.dev/badge/skills/timholy/claude_config/profile-performance/github.svg)](https://agentmods.dev/skills/timholy/claude_config/profile-performance)
Your own site
<a href="https://agentmods.dev/skills/timholy/claude_config/profile-performance"><img src="https://agentmods.dev/badge/skills/timholy/claude_config/profile-performance/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 profile-performance

Your own site · 80×15
<a href="https://agentmods.dev/skills/timholy/claude_config/profile-performance"><img src="https://agentmods.dev/badge/skills/timholy/claude_config/profile-performance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,258 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.
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 $0.00095 $0.03258
Opus 5.5 $0.00038 $0.01303
Sonnet 5.5 $0.00019 $0.00652
Haiku 4.5 $0.00010 $0.00326

Measured 10d ago against content hash be9a2b70a3d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

profile-performance 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 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.

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/profile-performance/SKILL.md · 181 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 Changed · +18 tokens per session be9a2b70a3d9
  2. 1mo ago Changed · +39 tokens per session e13af799a8e4
  3. 1mo ago First seen · 181 lines · 38 tokens per session scan A 912258208422

Subscribe to this mod's changes

profile-performance is a skill published in the GitHub repository timholy/claude_config (75 stars, last pushed yesterday), with no licence file. It adds 95 tokens to every session and 3,258 once invoked, about $0.0004 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 2026-09-20.

Related

profile-performance compared with skills from other repositories

profile-performance next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
profile-performancetimholy/claude_configSkill75yesterdaynoneA95Claude Code
dotnet-reversezhaoxuya520/reverse-skillSkill44k1mo agoMITA144Claude Code
dart-run-static-analysisflutter/agent-pluginsSkill3.2k2d agoBSD-3-ClauseA43Claude Code
agents-sdk-dotnet-debuggingmicrosoft/AgentsSkill1.1kyesterdayMITA136Claude Code
memory-optimizationbenchflow-ai/skillsbenchSkill1.9k3d agoApache-2.0A60Claude Code, Codex
golang-error-handlingsamber/cc-skills-golangSkill3.8k5d agoMITA144Claude Code
prismer-python-debugpyPrismer-AI/PrismerCloudSkill1.4k15d agoMITA19Claude Code, Codex