arc-explainer: Skill for Claude Code

.claude/skills/slack-gif-creator/SKILL.md

slack-gif-creator is a skill for Claude Code from 82deutschmark/arc-explainer. It costs 57 tokens per session (4,454 once invoked), scanned A, original, no licence file.

A toolkit for creating animated GIFs sized and checked for use in Slack, a team messaging app. It includes reusable pieces for building animations.

In plain words
What is it for?
Making Slack GIFs or animated emojis from descriptions of objects or characters doing something.
Why use it?
It helps avoid GIFs that do not meet Slack's size requirements and reduces the work needed to assemble simple animations.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is 82deutschmark/arc-explainer's own configuration. It tells Claude Code how to work on arc-explainer 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 arc-explainer configures →

Reuse

Borrowing it

Nothing to install: this file belongs to 82deutschmark/arc-explainer. 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/82deutschmark/arc-explainer/main/.claude/skills/slack-gif-creator/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/82deutschmark/arc-explainer

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 slack-gif-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/82deutschmark/arc-explainer/slack-gif-creator.svg)](https://agentmods.dev/skills/82deutschmark/arc-explainer/slack-gif-creator)
Your own site
<a href="https://agentmods.dev/skills/82deutschmark/arc-explainer/slack-gif-creator"><img src="https://agentmods.dev/badge/skills/82deutschmark/arc-explainer/slack-gif-creator.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,454 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 $0.00057 $0.04454
Opus 5 $0.00028 $0.02227
Sonnet 5 $0.00011 $0.00891
Haiku 4.5 $0.00006 $0.00445

Measured 8d ago against content hash e5ce81d3dc40, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

slack-gif-creator 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 8d 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/slack-gif-creator/SKILL.md · 647 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

60 files 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. 8d ago First seen · 647 lines · 57 tokens per session scan A e5ce81d3dc40

Subscribe to this mod's changes

slack-gif-creator is a skill published in the GitHub repository 82deutschmark/arc-explainer (10 stars, last pushed today), with no licence file. It adds 57 tokens to every session and 4,454 once invoked, about $0.0003 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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