macos-screen-flash-triage

macos-screen-flash-triage is a skill for Claude Code from dmaynor/dmaynor-skills-marketplace. It costs 171 tokens per session (2,197 once invoked), scanned A, original, no licence file.

A macOS troubleshooting procedure for screen flashes that resemble screenshots but do not create a screenshot file. It reads system logs from WindowServer and SkyLight to distinguish screen-capture activity from benign events.

In plain words
What is it for?
It is for investigating random screenshot-like flashes on macOS and checking related unified logs.
Why use it?
It helps determine whether a brief flash came from screen capture or from normal macOS behavior instead of relying on guesswork.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the macos-screen-flash-triage plugin — 1 skill shipped together

Good fit It is for investigating random screenshot-like flashes on macOS and checking related unified logs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage
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 dmaynor/dmaynor-skills-marketplace --skill macos-screen-flash-triage
Clone the repo
git clone --depth 1 https://github.com/dmaynor/dmaynor-skills-marketplace

Made for: Claude Code.

Or install macos-screen-flash-triage, the plugin that ships this one along with the rest of its 1 skill.

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 macos-screen-flash-triage

README.md
[![agentmods](https://agentmods.dev/badge/skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage/github.svg)](https://agentmods.dev/skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage)
Your own site
<a href="https://agentmods.dev/skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage"><img src="https://agentmods.dev/badge/skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage/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 macos-screen-flash-triage

Your own site · 80×15
<a href="https://agentmods.dev/skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage"><img src="https://agentmods.dev/badge/skills/dmaynor/dmaynor-skills-marketplace/macos-screen-flash-triage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 171 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,197 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 $0.00171 $0.02197
Opus 5 $0.00086 $0.01099
Sonnet 5 $0.00034 $0.00439
Haiku 4.5 $0.00017 $0.00220

Measured yesterday against content hash 23a3d2d3bce1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

macos-screen-flash-triage 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 yesterday.

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.

plugins/macos-screen-flash-triage/skills/macos-screen-flash-triage/SKILL.md · 149 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. yesterday Changed · +1 lines 23a3d2d3bce1
  2. 12d ago First seen · 148 lines · 171 tokens per session scan A 3dd7651510c8

Subscribe to this mod's changes

macos-screen-flash-triage is a skill published in the GitHub repository dmaynor/dmaynor-skills-marketplace (5 stars, last pushed yesterday), with no licence file. It adds 171 tokens to every session and 2,197 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 2026-08-31.

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