slack-gif-creator

Delivering the GIF

When this skill finishes producing an animated GIF (output.gif), deliver it with the standard delivery commands — cloud deliver <abs-path> to attach it to your reply, or cloud file send "$PRISMER_CONVERSATION_ID" <abs-path> to send it as a standalone message. See the office-artifacts delivery contract for the full rules (incl. the hermes --run-id / --conversation-id flags).

Do NOT hand-build POST /api/im/assets calls or assemble ContentBlock JSON yourself, and do NOT paste a data:image/gif;base64,… URI or a local ./output.gif path into the reply body — local paths break the moment the daemon is restarted and base64 defeats caching. The delivery command registers the asset so the chat renderer surfaces the GIF preview automatically.

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

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:

from PIL import Image

uploaded = Image.open('file.png')
# Use directly, or just as reference for colors/style