New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Slack Gif Creator

by nexu-io in nexu-io/open-design

Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives.

Apache-2.0Auto-check passedMedia & Creative

Install Slack Gif Creator

skills CLI
$ npx skills add nexu-io/open-design --skill slack-gif-creator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nexu-io/open-design slack-gif-creator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/slack-gif-creator .claude/skills/slack-gif-creator && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
slack-gif-creator
GitHub stars
100k
Token cost
~316 tokens
SKILL.md length
94 words
Files
1
Skills in repo
245
Repo updated
First seen
Licence
Apache-2.0

At a glance

Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives.

  • Tasks that involve Social media graphics
  • SKILL.md covers What it does, Source and How to use
  • Reaches github.com

What it does

Slack Gif Creator is an agent skill from nexu-io/open-design. Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives.

Its SKILL.md is about 320 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Media & Creative, covering Social media graphics. It works with Slack. The repository describes itself as: 🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes… The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Social media graphics

Example prompts

  • “/slack-gif-creator”

What it can do on your machine

Read from SKILL.md and the folder at commit 17e2559. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Slack Gif Creator loads about 316 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 94 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~33
When it runs · the whole SKILL.md, loaded when a task matches
~316

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nexu-io/open-design at commit 17e2559, republished under its Apache-2.0 licence (© nexu-io). 94 words, ~316 tokens.

Download SKILL.mdSave it as .claude/skills/slack-gif-creator/SKILL.md (or your agent's skills folder).
name
slack-gif-creator
description
Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives.
triggers
slack gif, animated gif, reaction gif, tiny gif
od.mode
image
od.category
image-generation
od.upstream
https://github.com/anthropics/skills/tree/main/skills/slack-gif-creator

slack-gif-creator

Curated from Anthropic's official skills repository.

What it does

Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives.

Source

How to use

This catalogue entry advertises the skill in OpenDesign so the agent discovers it during planning. To run the full upstream workflow with its original assets, scripts, and references, install the upstream bundle into your active agent's skills directory:

bash
# Inspect the upstream README for exact paths
open https://github.com/anthropics/skills/tree/main/skills/slack-gif-creator

Then ask the agent to invoke this skill by name (slack-gif-creator) or with one of the trigger phrases listed in this skill's frontmatter.

© nexu-io, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/slack-gif-creator of nexu-io/open-design.

Open the folder on GitHubat commit 17e2559

Compare with similar skills

Slack Gif Creator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Slack Gif Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Slack Gif Creator this skillnexu-io/open-design100k—~316Automated safety check: PassApache-2.0
Slack GIF Creatoranthropics/skills180k29 repos~2kAutomated safety check: PassApache-2.0
Slack Gif Creatordavepoon/buildwithclaude3.6k12 repos~4.3kAutomated safety check: PassApache-2.0
Slack Gif CreatorLeastBit/Claude_skills_zh-CN590—~1.2kAutomated safety check: PassApache-2.0
Pixel Gif Makermohitagw15856/pm-claude-skills1.4k—~937Automated safety check: PassMIT
Social Previewthatrebeccarae/claude-marketing161—~2.1kAutomated safety check: PassMIT

Similar skills

  • Slack GIF Creator

    anthropics/skills

    Official

    Provides Slack size and frame limits, Python animation helpers and validators for building animated GIFs sized for emoji and messages.

    180k GitHub starsUsed in 29 repos~2k tokens
    Media & CreativeAuto-check passed

  • Slack Gif Creator

    davepoon/buildwithclaude

    Toolkit for creating animated GIFs optimized for Slack, with validators for size constraints and composable animation primitives.

    3.6k GitHub starsUsed in 12 repos~4.3k tokens
    Media & CreativeAuto-check passed

  • Slack Gif Creator

    LeastBit/Claude_skills_zh-CN

    用于创建针对 Slack 优化的动画 GIF 的知识和工具集。提供约束条件、验证工具和动画概念。当用户请求为 Slack 创建动画 GIF 时使用，例如"为 Slack 制作一个 X 做 Y 的 GIF"。

    590 GitHub stars~1.2k tokensUpdated 8 mo ago
    Media & CreativeAuto-check passed

  • Pixel Gif Maker

    mohitagw15856/pm-claude-skills

    Generate retro pixel-text animated GIFs for Slack, Teams, or a PR comment — scrolling marquees, heartbeat pulses, confetti parties, twinkling sparkles — from a bundled pure-stdlib Python script (no…

    1.4k GitHub stars~937 tokensUpdated 2 days ago
    Media & CreativeAuto-check passed

  • Social Preview

    thatrebeccarae/claude-marketing

    Generate Open Graph social preview images (1280x640) for GitHub repositories.

    161 GitHub stars~2.1k tokensUpdated 5 mo ago
    Marketing & SEOAuto-check passed

  • Announcement Card

    mohitagw15856/pm-claude-skills

    Write a short, punchy announcement designed to be shared as an image or social card.

    1.4k GitHub stars~768 tokensUpdated 2 days ago
    Product & Project ManagementAuto-check passed

More from nexu-io/open-design

All 245 skills in this repo

  • Humanize PPT

    nexu-io/open-design

    Turns raw notes into a talk-ready slide outline with per-page image, diagram or video decisions, then checks the rendered deck against that outline.

    100k GitHub stars~4k tokensUpdated yesterday
    Auto-check passed

  • Last 30 Days Trend Research

    nexu-io/open-design

    Produces a cited Markdown briefing on recent community sentiment and social reaction to a topic, labeling every source it could not actually check.

    100k GitHub stars~1.3k tokensUpdated yesterday
    Auto-check passed

  • OpenDesign Contribution Flow

    nexu-io/open-design

    Helps newcomers contribute to OpenDesign: ship a skill or design system, translate docs, fix docs or report a bug, ending in a pull request or issue.

    100k GitHub stars~3.5k tokensUpdated yesterday
    Auto-check: notes

  • Chat Motion Overlay Generator

    nexu-io/open-design

    Turns a chat transcript or screenshot into a configurable animated chat clip, rendered as a Remotion bundle with optional transparency.

    100k GitHub stars~1.1k tokensUpdated yesterday
    Auto-check passed

  • Flowai Live Dashboard Template

    nexu-io/open-design

    Team-management dashboard skill in the FlowAI aesthetic — three tabs (Team Members, Team Details, Activity Log), KPI stat row, member table, role distribution bar chart, online presence and activity…

    100k GitHub stars~865 tokensUpdated yesterday
    Auto-check passed

  • Hatch Pet

    nexu-io/open-design

    Create, repair, validate, preview, and package Codex-compatible animated pet spritesheets from character art, screenshots, generated images, or visual references.

    100k GitHub stars~6k tokensUpdated yesterday
    Auto-check passed

Works with

Categories

Questions about Slack Gif Creator

What does Slack Gif Creator do?

Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives. Slack Gif Creator is an agent skill from nexu-io/open-design. Create animated GIFs optimized for Slack with validators for size constraints and composable animation primitives.

When should I use Slack Gif Creator?

Slack Gif Creator fits situations like: tasks that involve Social media graphics.

How do I install Slack Gif Creator in Claude Code?

Run `npx skills add nexu-io/open-design --skill slack-gif-creator -a claude-code`. Or copy the skill folder (skills/slack-gif-creator in nexu-io/open-design) into .claude/skills/slack-gif-creator in your project. Claude Code loads it when a task matches its description.

How do I install Slack Gif Creator in Codex?

Run `npx skills add nexu-io/open-design --skill slack-gif-creator -a codex`. Or copy the skill folder (skills/slack-gif-creator in nexu-io/open-design) into .agents/skills/slack-gif-creator in your project. Codex loads it when a task matches its description.

Can I use Slack Gif Creator in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nexu-io/open-design --skill slack-gif-creator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/slack-gif-creator, .gemini/skills/slack-gif-creator, .github/skills/slack-gif-creator and .opencode/skills/slack-gif-creator in your project.

What does Slack Gif Creator need to run?

SKILL.md names no scripts, command-line tools or credentials: Slack Gif Creator is instructions for the agent only.

Does Slack Gif Creator access the network?

SKILL.md names 1 domain. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Slack Gif Creator safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Slack Gif Creator use?

Slack Gif Creator is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Slack Gif Creator use?

About 316 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Slack Gif Creator?

Skills that share tags, products or a category with Slack Gif Creator: Slack GIF Creator (anthropics/skills, 180k stars), Slack Gif Creator (davepoon/buildwithclaude, 3.6k stars), Slack Gif Creator (LeastBit/Claude_skills_zh-CN, 590 stars) and Pixel Gif Maker (mohitagw15856/pm-claude-skills, 1.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Slack Gif Creator?

nexu-io (a GitHub organization) maintains it in nexu-io/open-design, which has 100,280 GitHub stars. The repository holds 245 skills in this directory. The repository was last updated on October 10, 2026.

Source: nexu-io/open-design on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.