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. It runs locally over stdio via the published package.

People who work with ai captions, podcast clips and shorts and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-07 · ★ 2 · #52 OF 173 MAINTAINED MEDIA · VERIFIED 2026-09-18

MIT · JavaScript servers · how we verify → /methodology

01 · Install Katto MCP

before you install - you'll need

KATTO_API_KEY

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add miracleweasel-katto-mcp -- npx -y katto-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "miracleweasel-katto-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "katto-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-08-20 - young repo, little track record yet

license MIT - declared in the repository

npm package katto-mcp - unscoped; check the name against the project README before installing

registry namespace io.github.miracleweasel is GitHub-verified and matches the repo owner

03 · What Katto MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.5.6 · 2026-09-07

katto-mcp 0.5.6 - 16 tools (adds katto_list_caption_styles). Single source of truth: tool defs now guarded against drift across the npm package and the hosted worker. Published to npm and the Official MCP Registry.

v0.5.4 · 2026-09-01

katto-mcp 0.5.4 - tools/list now responds without an API key so MCP directory sandboxes (Glama, mcp.so, ...) can enumerate the 15 tools (fixes the "0 tools" listings); every tool CALL still requires a valid key.…

04 · Who maintains Katto MCP

katto-mcp is maintained by miracleweasel. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository: github.com/miracleweasel/katto-mcp
category: media - ranked #52 of 173 actively-maintained media servers as of 2026-09-18.
release cadence: 2 releases in the last 90 days (latest 2026-09-07)
registry: io.github.miracleweasel/katto-mcp (active, first published 2026-08-20 · 4 versions)
packages: npm:katto-mcp

06 · Katto MCP FAQ

What is Katto MCP?

Is Katto MCP still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-07 and it shipped 2 releases in the last 90 days. We re-verify nightly.

How do I install Katto MCP?

Run `npx -y katto-mcp`. The README documents one environment variable (KATTO_API_KEY) to set first. You can also paste the ready-made client config above.

Does Katto MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Katto MCP

Alternatives to Katto MCP

Maintained media servers if Katto MCP isn't the fit.

More media MCP servers · Paper Banana CN · Prompt To Asset · Logic Pro MCP · Video Transcriber

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