grafema: Skill for Claude Code

.claude/skills/gui-perf-profiling-cdp/SKILL.md

gui-perf-profiling-cdp is a skill for Claude Code from Disentinel/grafema. It costs 177 tokens per session (2,079 once invoked), scanned A, original, no licence file.

A method for diagnosing slow or uneven animation frames in React, Three.js, or other browser canvas applications using a Playwright-captured CDP CPU profile.

In plain words
What is it for?
Use it to investigate frame stutter after basic performance instrumentation has failed to reveal the offender.
Why use it?
It shows which code consumes processing time when console performance logs do not identify the cause, reducing guesswork during debugging.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is Disentinel/grafema's own configuration. It tells Claude Code how to work on grafema itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything grafema configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Disentinel/grafema. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Disentinel/grafema/main/.claude/skills/gui-perf-profiling-cdp/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Disentinel/grafema

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 gui-perf-profiling-cdp

README.md
[![agentmods](https://agentmods.dev/badge/skills/disentinel/grafema/gui-perf-profiling-cdp/github.svg)](https://agentmods.dev/skills/disentinel/grafema/gui-perf-profiling-cdp)
Your own site
<a href="https://agentmods.dev/skills/disentinel/grafema/gui-perf-profiling-cdp"><img src="https://agentmods.dev/badge/skills/disentinel/grafema/gui-perf-profiling-cdp/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 gui-perf-profiling-cdp

Your own site · 80×15
<a href="https://agentmods.dev/skills/disentinel/grafema/gui-perf-profiling-cdp"><img src="https://agentmods.dev/badge/skills/disentinel/grafema/gui-perf-profiling-cdp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 177 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,079 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 $0.00177 $0.02079
Opus 5 $0.00088 $0.01040
Sonnet 5 $0.00035 $0.00416
Haiku 4.5 $0.00018 $0.00208

Measured 9d ago against content hash d19f662a4203, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

gui-perf-profiling-cdp 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 9d 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.

.claude/skills/gui-perf-profiling-cdp/SKILL.md · 148 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. 9d ago First seen · 148 lines · 177 tokens per session scan A d19f662a4203

Subscribe to this mod's changes

gui-perf-profiling-cdp is a skill published in the GitHub repository Disentinel/grafema (36 stars, last pushed 16d ago), with no licence file. It adds 177 tokens to every session and 2,079 once invoked, about $0.0009 per session on Opus 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 2026-08-30.

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