Katto MCP server

katto-mcp

The AI video clipping MCP server. Turn long videos into scored, captioned, vertical 9:16 short clips from any MCP client (Claude, Cursor, Claude Code, ChatGPT, VS Code, and other conformant clients). Drop in a YouTube link, a podcast, or a Twitch VOD and get publish-ready shorts back through natural conversation.

Powered by Katto, an AI video clipper that turns long-form video (podcasts, interviews, streams, webinars) into short-form clips for TikTok, Reels and YouTube Shorts. Katto is a flat-priced, no-credits alternative to tools like OpusClip: one 25-video quota covers videos up to 90 minutes each, with the API and MCP included on every paid plan (not gated behind an enterprise tier).

What it does

Ask your agent something like "clip the best moments from this podcast and reframe them for TikTok" and Katto will:

• find the strongest 30 to 90 second moments in a long video and score each clip 0 to 100 on Hook, Flow, Value and Trend,
• reframe to vertical 9:16 with face tracking, split-screen for two speakers, and stacked layouts for gaming,
• burn animated captions (auto-captioned in 99 languages via Whisper large-v3; word-by-word timing in 41 of them, sentence-level in the rest) and optionally dub into 8 languages,
• and hand back publish-ready MP4 files plus SRT caption urls.

Typical uses: repurpose a YouTube video into shorts, turn a podcast episode into clips, cut highlights from a Twitch VOD, or convert a long interview into vertical social posts.

Two ways to connect

Hosted (zero-install, recommended)

Point any OAuth-capable MCP client at the hosted endpoint and sign in with your Katto account. The API key never touches your disk, and you can revoke access anytime:

https://mcp.katto.tech/mcp   (Streamable HTTP, OAuth 2.1)

Local (npx)

For Cursor, CI and scripts. Create an API key at katto.tech/dashboard/api-keys, then add the server to your MCP client config:

{
  "mcpServers": {
    "katto": {
      "command": "npx",
      "args": ["-y", "katto-mcp"],
      "env": { "KATTO_API_KEY": "sk_live_..." }
    }
  }
}

The hosted endpoint above also accepts Authorization: Bearer sklive... directly for key-based clients.

Install per client

Claude Code (hosted, OAuth):

claude mcp add --transport http katto https://mcp.katto.tech/mcp

Claude Desktop — Settings → Connectors → Add custom connector → https://mcp.katto.tech/mcp, then sign in. (Or add the npx block above to claudedesktopconfig.json.)

Cursor — Settings → MCP → Add → paste the npx JSON block above (uses KATTOAPIKEY).

VS Code (MCP extension) — add the same npx block to your MCP settings, or point it at the hosted URL if your client supports remote OAuth servers.

ChatGPT (Developer mode / connectors) — add a custom connector with URL https://mcp.katto.tech/mcp.

Tools

Shortened. The full README is on GitHub.