performance

performance is a skill for Claude Code from MDMAtk/TormentNexus. It costs 13 tokens per session (3,394 once invoked), scanned B, original, no licence file.

A set of checks and benchmarks for improving a command-line program's performance. It focuses on startup time, memory use, and the number of tokens used in related output or processing.

In plain words
What is it for?
Use it when measuring or improving RTK's startup speed, memory usage, or token savings.
Why use it?
It helps identify where the program is slow, uses too much memory, or consumes more tokens than needed. This gives performance work concrete measurements to compare.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it when measuring or improving RTK's startup speed, memory usage, or token savings.

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

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 performance

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/mdmatk/tormentnexus/performance"><img src="https://agentmods.dev/badge/skills/mdmatk/tormentnexus/performance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,394 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 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 $0.00013 $0.03394
Opus 5.5 $0.00005 $0.01358
Sonnet 5.5 $0.00003 $0.00679
Haiku 4.5 $0.00001 $0.00339

Measured 1mo ago against content hash 4ea0282376d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

performance scanned grade B 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 1mo 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo dtrace -n 'syscall::open*:entry { @[execname] = count(); }' &
third_party/rtk/.claude/skills/performance/SKILL.md · 436 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

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. 1mo ago First seen · 436 lines · 13 tokens per session scan B 4ea0282376d2

Subscribe to this mod's changes

performance is a skill published in the GitHub repository MDMAtk/TormentNexus (12 stars, last pushed 2mo ago), with no licence file. It adds 13 tokens to every session and 3,394 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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