Create Slack GIFs and custom animated emoji
Slack GIF and emoji creation
Turn a reaction idea into a small animated GIF for Slack. Give the agent a subject, motion and intended use; ask it to check the file size, frame count and legibility before handing over the file.
Add to your OasisAn agent template for your Oasis workspace. Sign in to add it, then connect Slack before running a task.
Who it's for
- Teams that want lightweight reactions for launches, thanks and recurring channel moments.
- Community, people and brand teams that need reusable Slack artwork without a manual animation workflow.
Key capabilities
- Turns a written brief or permitted source image into an animated Slack GIF.
- Checks dimensions, file size, frame count and legibility at emoji scale.
- Returns the file and its measured specifications for review before upload or posting.
What to give the agent
- A reaction or message: a celebration, a thank-you or a quick acknowledgement.
- A visual brief: subject, colors, movement and any image you have permission to use.
- The destination: a custom emoji or an image shared in a channel. These need different sizes.
Example prompt
A small celebration for a shipped feature
Create a custom Slack emoji of a green checkmark popping into view. Use a transparent background, no text and one short bounce. Keep it square and under 128 KB, with no more than 50 frames. Return the GIF and report its dimensions, file size and frame count. Do not post it to a channel.
What to review in the output
Example brief + review checklist. The GIF is generated when you run the agent; this page does not generate or upload one.
| Check before using | What to look for |
|---|---|
| Animation | One clear reaction that stays readable at emoji size. |
| File | A GIF attachment, plus its measured dimensions, bytes and frame count. |
| Slack upload | Preview the uploaded emoji. Reduce detail or frames if the result is unclear. |
Included connections
Connect these once. Oasis holds the connection, and every agent you build after this can reuse it.
SlackIncluded- +Custom toolConnect any other tool from thousands of available integrations.
Skills it ships with
How it runs
- Foundation
Claude Managed Agent
- Model
- Claude Haiku 4.5
- Reasoning
- Low effort
- Per run
- Up to 20 turns
- Memory
- Off
- Browsing
- Off
- Category
- Creative
- Slack
- Fun
- Gif
How it works
- 1
Add the GIF agent
Sign in to Oasis and add this template. Its GIF creation skill and starting settings are included.
- 2
Connect Slack + give it a brief
Connect your Slack workspace. Describe the animation and say whether you want a custom emoji or a channel GIF.
- 3
Check the file before uploading
Ask for the GIF's dimensions, file size and frame count. Preview it at emoji size, then upload it in Slack if you have permission.
Use cases
- Create a launch, shipped or incident-resolved reaction for a team channel.
- Turn a company symbol into a compact animated custom emoji.
- Produce a thank-you, welcome or celebration GIF with a consistent visual brief.
Setup requirements
- An Oasis workspace and this template's bundled Slack GIF creation skill.
- A Slack connection when the task needs workspace access; file generation can be reviewed separately.
- Permission from the source-image owner and, for custom emoji, permission from your Slack workspace.
Approval + safety
- Creating the GIF does not automatically upload it as a workspace emoji.
- Review animation, bytes, frame count and small-size legibility before sharing it.
- The agent cannot bypass Slack permissions or rights attached to source artwork.
Frequently asked questions
How do I add the GIF as a custom Slack emoji?
On Slack desktop, open the emoji picker, choose Add Emoji, upload the file and give it a name. Workspace owners can restrict this permission. Slack recommends square images under 128 KB and supports GIFs with up to 50 frames. Slack's custom emoji guide.
Can I make a GIF here without signing in?
This page describes an Oasis agent template. Add it to your Oasis, connect Slack and give the agent a task. Adding the template is free; running the agent is subject to your Oasis plan and usage.
Will it publish the result automatically?
Tell the agent whether you want a file for review or want it shared. Creating a GIF and adding a custom emoji are separate steps; connecting Slack does not grant you workspace-admin permissions.
What should I include in a Slack GIF brief?
Describe the subject, motion, colors and intended destination. Say whether it is a custom emoji or a channel GIF, include any source image you can legally use, and set limits for dimensions, file size and frame count.
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Put Slack GIF Maker to work today
An agent template for your Oasis workspace. Sign in to add it, then connect Slack before running a task.