Katto’s official MCP server — 16 tools

Submit a long video (YouTube, Twitch, Vimeo, Rumble, Zoom, Dailymotion) for clipping. Consumes 1 video from your monthly quota — check katto_get_usage first. Clips are produced asynchronously; returns a job id, then poll katto_get_job every 30-60 s until status is 'completed', or pass webhook_url to be notified. Pass idempotency_key when you might retry, so a retry never spends a second video. Fails if the URL is unsupported or the video is over 90 minutes.

{
  "name": "katto_create_clip_job",
  "arguments": {
    "url": "https://youtube.com/watch?v=…"
  }
}

Read-only. Get the status, progress and clips of a job by id. Clips come ranked by virality score (0-100, highest first; ties broken by clip_index). Each clip is { url, captions_url, title, score, clip_index, hd }: when status is 'completed' every url is a finished, downloadable clip; hd is true once the 1080p high-quality render is ready. hd=false does NOT mean broken — the url already works, the 1080p is just still rendering in the background (and stays the standard render on the free plan). The job-level hd_ready flag turns true once every clip is hd, i.e. the URLs are final and won't be swapped again (status='completed' fires earlier). Returns 404 for an unknown id.

{
  "name": "katto_get_job",
  "arguments": {
    "id": "job_…"
  }
}

Read-only. List your recent jobs, newest first. Paginate with 'cursor' (pass the previous next_cursor); optional 'status' filter. Returns { jobs: [{id, status, source, created_at, completed_at}], next_cursor }.

{
  "name": "katto_list_jobs",
  "arguments": {
    "limit": 20,
    "cursor": "…",
    "status": "…"
  }
}

Read-only convenience: the clips of a job as { url, captions_url, title, score, clip_index, hd }, ranked by score (highest first). hd=true means the 1080p render is ready; hd=false means the url is the standard render (HD still finishing, or the free plan). Empty until the first clip is ready.

{
  "name": "katto_get_clips",
  "arguments": {
    "id": "job_…"
  }
}

Read-only. Your current plan and monthly video quota: { plan, videos_used, videos_limit, videos_remaining }. Call before katto_create_clip_job to confirm remaining quota.

No parameters.

{
  "name": "katto_get_usage",
  "arguments": {}
}

Read-only. The transcript of a completed job as timestamped segments [{ start, end, text }]. Returns 404 while the job is still processing.

{
  "name": "katto_get_transcript",
  "arguments": {
    "id": "job_…"
  }
}

Cancel a still-running job (queued/processing) and refund the video back to your monthly quota. Safe to retry (idempotent). Returns an error if the job already finished, failed, or was cancelled.

{
  "name": "katto_cancel_job",
  "arguments": {
    "id": "job_…"
  }
}

Read-only. The account behind this key: plan, this key's scopes (read/write), and monthly quota { videos_used, videos_limit, videos_remaining }.

No parameters.

{
  "name": "katto_get_account",
  "arguments": {}
}

Read-only. The video platforms Katto can clip from, each with an example URL. Use it to confirm a URL is supported before calling katto_create_clip_job.

No parameters.

{
  "name": "katto_list_sources",
  "arguments": {}
}

Read-only. The valid values for the optional config.clipLength on katto_create_clip_job (target clip-duration buckets). Note: clipLength is fixed at creation and cannot be changed by re-render.

No parameters.

{
  "name": "katto_list_clip_lengths",
  "arguments": {}
}

Read-only. The valid caption_style preset names for katto_rerender_clip (id + label), e.g. 'hormozi' for bold word-by-word highlight. Call this before re-rendering so you pass a real preset instead of guessing.

No parameters.

{
  "name": "katto_list_caption_styles",
  "arguments": {}
}

Re-render one already-finished clip with a new reframe layout and/or caption style (get valid caption_style values from katto_list_caption_styles). Free — does NOT use video quota. Each call starts a new render (not idempotent); the original clip is kept. Returns a rerender_id; poll katto_get_rerender for the new clip url.

{
  "name": "katto_rerender_clip",
  "arguments": {
    "id": "job_…",
    "clip_index": 0
  }
}

Re-render one finished clip dubbed into one or more of 19 languages (en, es, fr, it, pt, hi, ja, zh, de, ko, nl, pl, ru, tr, id, vi, th, uk, ar). Creator feature (requires an active subscription); does NOT use your monthly video quota. Each call starts a new render (not idempotent). Returns a rerender_id; poll katto_get_rerender for the result.

{
  "name": "katto_dub_clip",
  "arguments": {
    "id": "job_…",
    "clip_index": 0,
    "languages": [
      "en"
    ]
  }
}

Read-only. Poll a re-render started by katto_rerender_clip or katto_dub_clip. Returns { status, clip_url, captions_url, dub_urls } — dub_urls is { lang: url } and is where a DUB lands (clip_url stays the undubbed re-render), null otherwise — clip_url is null until status is 'completed'.

{
  "name": "katto_get_rerender",
  "arguments": {
    "id": "job_…",
    "rerender_id": "…"
  }
}

Read-only. Your saved brand kits (colors, caption font and position, default layout, watermark url).

No parameters.

{
  "name": "katto_get_brand_kit",
  "arguments": {}
}

Read-only. Returns your webhook signing SECRET — treat it as a credential (do not display or log it) — plus how to verify Katto's signed completion callbacks (HMAC-SHA256 of {timestamp}.{body}). Pass webhook_url on a job to receive them.

No parameters.

{
  "name": "katto_get_webhook_secret",
  "arguments": {}
}