.pptx master) defines the look of your slides: backgrounds, color palettes, fonts, logo placement, and available layouts. Decky reads this file when generating a deck and applies your brand design to every slide.
Upload a template
1
Open the dashboard
Go to app.decky-ai.com and sign in.
2
Go to Templates
Click Templates in the left sidebar, then Upload template and select your
.pptx file.3
Name and save
Give it a name (e.g. “Acme Corp 2026”) and click Upload. Decky extracts the available layouts within a few seconds.
Limits: Up to 3 templates per account. To add a new one when at the limit, delete an existing template first.
What makes a good master file?
Export a clean .pptx
Export a clean .pptx
Use a
.pptx exported from PowerPoint or Google Slides (File → Download as .pptx).Include multiple layouts
Include multiple layouts
The more slide layouts you include, the more design variety Decky can apply. At minimum include a title and a content layout.
Set brand colors in the theme
Set brand colors in the theme
Add your brand colors to the theme palette (Format → Theme → Colors in PowerPoint). Decky extracts these for text and accent colors.
Put your logo on the slide master
Put your logo on the slide master
Place your logo on the slide master, not just on individual slides, so it appears consistently.
Use a template when generating a deck
- Via Claude (MCP)
- Via API (direct)
Ask Claude to list your templates first:Then generate a deck with it:
“What brand templates do I have available?”Claude calls
list_masters and returns something like:“Create a 10-slide sales deck about our enterprise security product. Use the Acme Corp 2026 template.”Claude passes
master_id: "tmpl_xyz789" to create_deck automatically.Template tips
Remove a template
Go to Templates on the platform, find the template, and click Delete. Decks already generated with that template are not affected.If you delete a template that’s referenced in an existing job, the job falls back to the default Decky design for new slides.