slack-gif-creator SKILL.md skillA

slack-gif-creator from anthropics/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add anthropics/skills/slack-gif-creator@git:20251201.ef74077

Pins git:20251201.ef74077 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

anthropics/skills

Path

skills/slack-gif-creator/SKILL.md

Versions recorded

1

Latest version

git:20251201.ef74077, committed Dec 1, 2025

Size

7,841 bytes

Repository stars

182,395

License

none declared

Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack.".

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Slack GIF Creator

A toolkit providing utilities and knowledge for creating animated GIFs optimized for Slack.

## Slack Requirements

**Dimensions:**
- Emoji GIFs: 128x128 (recommended)
- Message GIFs: 480x480

**Parameters:**
- FPS: 10-30 (lower is smaller file size)
- Colors: 48-128 (fewer = smaller file size)
- Duration: Keep under 3 seconds for emoji GIFs

## Core Workflow

```python
from core.gif_builder import GIFBuilder
from PIL import Image, ImageDraw

# 1. Create builder
builder = GIFBuilder(width=128, height=128, fps=10)

# 2. Generate frames
for i in range(12):
    frame = Image.new('RGB', (128, 128), (240, 248, 255))
    draw = ImageDraw.Draw(frame)

    # Draw your animation using PIL primitives
    # (circles, polygons, lines, etc.)

    builder.add_frame(frame)

# 3. Save with optimization
builder.save('output.gif', num_colors=48, optimize_for_emoji=True)
```

## Drawing Graphics

### Working with User-Uploaded Images
If a user uploads an image, consider whether they want to:
- **Use it directly** (e.g., "animate this", "split this into frames")
- **Use it as inspiration** (e.g., "make something like this")

Load and work with images using PIL:
```python
…

Read the whole file at its exact version.

How to install

mdr add anthropics/skills/slack-gif-creator@sha256:2efca615ce55a3ed

[![mdr](https://markdownregistry.com/badge/art_kkg6iorur4fg3p4f.svg)](https://markdownregistry.com/a/art_kkg6iorur4fg3p4f)

Versions

The registry has recorded 1 version of this file, committed on Dec 1, 2025.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_kkg6iorur4fg3p4f
GET https://markdownregistry.com/api/v1/resolve?ref=anthropics/skills/slack-gif-creator
GET https://markdownregistry.com/api/v1/blob/2efca615ce55a3edd8fc05c779068a8085816617991987e446606403cd3abb22

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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