Katto is an AI video clipper, and it ships an official MCP server. That means you don't have to open the app to use it: connect it to Claude once, then ask in plain English — "clip the best moments of this YouTube video" — and Katto downloads, transcribes, scores and renders vertical captioned clips, then hands them back ranked by a virality score.
No install, no API key pasted into a config file. Here is the whole thing, start to finish.
Connect in 60 seconds
- In Claude, open Settings → Connectors and choose Add connector.
- Paste the hosted endpoint:
https://mcp.katto.tech/mcp - Click Allow to sign in with your Katto account (OAuth). That's it — no key to copy, nothing stored on disk.
Prefer a local setup, or using Cursor, VS Code, Windsurf or ChatGPT? The per-client guides cover each one, including the npx command and the API-key header if you'd rather not use OAuth.
Then just ask
Once it's connected, you talk to Katto in normal language. A first prompt to try:
Clip the best 3 moments of https://www.youtube.com/watch?v=YOUR_VIDEO
Claude calls Katto, you get back a job id, and you can poll it until the clips are ready:
What's the status of that job? Show me the clips with their scores.
Each clip comes with its MP4 url, an SRT caption file, a title, and a 0–100 virality score, ranked highest first. When a clip's hd field turns true, its 1080p render is final; the job-level hd_ready flag tells an agent when every clip is done, so it never caches a link that's about to change.
What you can do (16 tools)
The connector is not a single "make clips" button — it exposes the whole pipeline as tools an agent can compose:
- Create & control jobs — submit a video URL, list your jobs, cancel a running job (and get the video credit refunded instantly).
- Read the output — job status and progress, the finished clips, the timestamped transcript.
- Re-render, free — re-render a clip with a different reframe layout or caption style, or dub it into any of 8 languages, without spending quota.
- Discover & configure — list the supported sources, the clip-length buckets, and the caption-style presets, plus your plan, quota and saved brand kit.
It works from your own code, too
The MCP server is a thin layer over Katto's public REST API — same endpoints, same responses. So whether you drive it from Claude, from Cursor, or from a script with a sk_live_ key, you get the same jobs, the same scored clips, idempotent retries and signed webhooks.
Try it
Connect Katto to Claude at https://mcp.katto.tech/mcp, read the MCP overview and the API docs, or start with a free account. If you kick the tires and something surprises you, tell us — we read every reply.

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