Slack GIF Creator (Anthropic)
Build animated GIFs optimized for Slack — 128×128 emoji and 480×480 messages, FPS/color/size tuning included
- What
- Build animated GIFs optimized for Slack — 128×128 emoji and 480×480 messages, FPS/color/size tuning included
- Cost
- Free
- Needs
- none beyond an AI agent that supports skills (Python with PIL for the GIFBuilder utility)
- Install
- Copy the installer prompt below into your Muse — your agent does the rest.
Curated by Skill Harbor — Anthropic's official toolkit for creating animated GIFs optimized for Slack: the real GIFBuilder utility plus the knowledge to use it well — Slack's constraints (128×128 for emoji GIFs, 480×480 for message GIFs, 10–30 FPS, 48–128 colors, under 3 seconds for emoji), drawing graphics from scratch or from user-uploaded images with PIL primitives, polish guidance (thicker lines, gradients, layered shapes, vibrant complementary colors), and optimization flags for emoji vs message output. Nothing comparable exists in the catalog. No accounts or paid services required. By @anthropics, listed here with credit to its creator. Skill Harbor never reviews the code, review it yourself before use.
Version:
Install
Prerequisites: none beyond an AI agent that supports skills (Python with PIL for the GIFBuilder utility) Install "Slack GIF Creator (Anthropic)" for me. Build animated GIFs optimized for Slack — 128×128 emoji and 480×480 messages, FPS/color/size tuning included. Repository: https://github.com/anthropics/skills/blob/main/skills/slack-gif-creator/SKILL.md 1. Fetch the SKILL.md file for the anthropics-slack-gif-creator skill from the repository into a temporary folder and summarize what it does in one or two sentences. 2. Safety check: review the SKILL.md and scripts for anything suspicious (unexpected network calls, shell commands, credential harvesting). This repo should contain zero secrets in code, credentials only via the secure vault, allowed hosts declared in the SKILL.md. Verify that holds here; STOP on any red flag and tell me. 3. Install it as a skill: copy SKILL.md and its helper files into the agent's skills directory, in a folder named "anthropics-slack-gif-creator". 4. Verify with no network calls: frontmatter valid, files in place. 5. Report what was installed, where, and what I still need to do myself (e.g. any accounts, API keys, or CLI tools mentioned in the prerequisites above). GitHub is optional: if I have a GitHub account or the gh CLI, you may use it; otherwise public access is fine. Never require it unless it's in the prerequisites above. Rules: don't touch anything outside the temp folder and the install target. Never ask me to paste secrets in chat — credentials go through the secure vault or environment variables. If anything looks off, stop and ask me.
Questions
How do I install a build?
Every product page includes a copy-paste install prompt. Paste it into your Muse and it sets the build up for you — no manual configuration.
Where does my money go?
Straight to the seller. Skill Harbor never processes payments: checkout happens on the seller’s own page, usually Stripe.
What does the ✓ next to a creator’s name mean?
It means we confirmed the identity of the person behind the listing. It says nothing about the code itself — always check a build before installing it.