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Slicer documentation

How to make vertical videos in Slicer, work with the public API and connect the MCP server to an AI agent. Quickstart, tutorial and help.

On this page

Slicer is an AI editor for vertical videos — Reels, Shorts and TikTok. You upload videos, photos, music or a voice-over and pick a style; Slicer cuts pauses and slips, picks the best moments, frames the shot in 9:16 and adds word-by-word captions, camera motion, emoji, callouts and sound effects. The director reviews and fixes the finished reel itself. In the editor you can fix any detail, and after export the reel goes out to YouTube, Instagram, TikTok and VK by itself. Slicer works in the browser and in the app for iPhone, iPad and Mac.

Sections

GuideEverything about working in Slicer: projects, the wizard, the director, the editor, export and publishing, account and payments.APIPublic REST API: uploads, montage runs, edits, export and webhooks with an API token.MCPConnect your AI assistant: it edits the video itself with editor commands — for free.

Quick links

QuickstartYour first reel in five steps — short, on one page.Tutorial: your first videoStep by step: from sign-up to publishing in 10–15 minutes.EditorTimeline, clips, captions, effects, music and keyboard shortcuts.SecurityHow Slicer encrypts files and data and who can access them.ChangelogWhat's new in Slicer, the API and MCP — by release date.

Common questions