youtube-summarize

MCP server that fetches YouTube video transcripts and optionally summarizes them.

Features

• Fetch transcripts in multiple formats (text, JSON, SRT, WebVTT, pretty-print)

• Video metadata — title, description, channel, upload date, duration, views, chapters (via yt-dlp)

• Optional timestamps in plain-text transcripts

• Summarize videos — returns transcript with the prompt clearly broken out for human review before the LLM acts on it

• List playlist videos — fast enumeration of any public playlist with optional sorting

• List available languages for any video's transcripts

• Flexible URL parsing — accepts full YouTube URLs (youtube.com/watch?v=, youtu.be/, youtube.com/embed/, youtube.com/shorts/) or bare video IDs

• Multi-language support — request transcripts in specific languages with fallback priority

Tools

get_transcript

Fetch a YouTube video's transcript. By default the response is prefixed with a [METADATA] block (title, channel, published, duration, views, description); pass include_metadata=false for transcript-only output.

summarize_transcript

Fetch a transcript and return it with summarization instructions. The response is structured into clearly-labeled sections ([INSTRUCTIONS], [PROMPT_SOURCE], [VIDEO], [METADATA], [TRANSCRIPT]) so a human can review the prompt before letting the LLM act on it.

get_video_metadata

Fetch metadata (title, description, channel, upload date, duration, views, tags, chapters, etc.) for a YouTube video. Backed by yt-dlp.

list_playlist_videos

List the videos in a YouTube playlist (title, ID, channel, duration, views, URL). Per-video metadata is intentionally lean so the call stays fast even for large playlists; call get_video_metadata with a specific video ID for full detail.

list_transcripts

List available transcript languages for a video.

Installation

Quick start (recommended)

uvx youtube-summarize

Claude Desktop

Add to your claude_desktop_config.json:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "youtube-summarize": {
      "command": "uvx",
      "args": ["youtube-summarize"]
    }
  }
}

Claude Code

claude mcp add youtube-summarize -- uvx youtube-summarize

Other MCP clients

Run the server over stdio:

uvx youtube-summarize

Prerequisites

• Python 3.13+

• uv package manager

Development

# Install dependencies
uv sync

# Launch the MCP inspector (web UI for testing tools)
uv run mcp dev main.py

License

MIT

mcp-name: io.github.zlatkoc/youtube-summarize