mcptube 0.1.2

Convert any YouTube video into an AI-queryable MCP server

🎬 mcptube

Convert any YouTube video into an AI-queryable MCP server.

mcptube extracts metadata, transcripts, and frames from YouTube videos, indexes them for semantic search, and exposes everything as both a CLI tool and an MCP (Model Context Protocol) server. Ask questions, generate reports, discover new videos, and synthesize themes — all from your terminal or AI assistant.

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✨ Features

Feature	CLI	MCP Server
Add/remove YouTube videos	✅	✅
List library with tags	✅	✅
Full video details + transcript	✅	✅
Semantic search (single/cross-video)	✅	✅
Frame extraction by timestamp	✅	✅
Frame extraction by query	✅	✅
Ask questions about videos	✅ (BYOK)	✅ (passthrough)
LLM classification/tagging	✅ (BYOK)	✅ (passthrough)
Illustrated reports (single video)	✅ (BYOK)	✅ (passthrough)
Cross-video reports	✅ (BYOK)	✅ (passthrough)
YouTube discovery + clustering	✅ (BYOK)	✅
Cross-video synthesis	✅ (BYOK)	✅ (passthrough)
Smart video resolver (ID/index/text)	✅	—

BYOK = Bring Your Own Key (Anthropic, OpenAI, or Google) Passthrough = The MCP client's own LLM does the analysis — zero API key required on the server

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📦 Installation

Prerequisites

• Python 3.12 or 3.13 (ChromaDB is not yet compatible with Python 3.14)
• ffmpeg — required for frame extraction (install guide)

Recommended: pipx (CLI + MCP server)

pipx install mcptube --python python3.12

This installs mcptube globally and makes it available to all MCP clients without activating a virtual environment.

Alternative: pip (virtual environment)

python3.12 -m venv venv
source venv/bin/activate
pip install mcptube

⚠️ macOS/Homebrew users: Global pip install will fail with "externally-managed-environment". Use pipx or a virtual environment instead.

Verify installation

mcptube --help

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🚀 Quick Start

# 1. Add a YouTube video
mcptube add "https://www.youtube.com/watch?v=dQw4w9WgXcQ"

# 2. List your library
mcptube list

# 3. Search the transcript
mcptube search "main topic"

# 4. Extract a frame at 30 seconds
mcptube frame 1 30

# 5. Ask a question about it
mcptube ask "What is this video about?" -v 1

💡 Always wrap multi-word arguments in double quotes — e.g. mcptube search "neural networks", not mcptube search neural networks.

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📖 CLI Reference

Library Management

Command	Description	Example
mcptube add "<url>"	Ingest a YouTube video	mcptube add "https://youtu.be/dQw4w9WgXcQ"
mcptube list	List all videos with tags	mcptube list
mcptube info <query>	Show full video details	mcptube info 1 or mcptube info "dQw4w9WgXcQ"
mcptube remove <query>	Remove a video	mcptube remove 1

Search & Frames

Command	Description	Example
mcptube search "<query>"	Semantic search across all videos	mcptube search "machine learning"
mcptube search "<query>" --video <id>	Search within a specific video	mcptube search "intro" --video 1
mcptube frame <video> <timestamp>	Extract frame at timestamp	mcptube frame 1 30
mcptube frame-query <video> "<query>"	Extract frame by transcript match	mcptube frame-query 1 "key moment"

Ask Questions (BYOK)

Command	Description	Example
mcptube ask "<question>" -v <video>	Ask about a single video	mcptube ask "What are the main points?" -v 1
mcptube ask "<question>" -v <id1> -v <id2>	Ask across multiple videos	mcptube ask "What do they agree on?" -v 1 -v 2

Analysis & Reports (BYOK)

Command	Description	Example
mcptube classify <video>	LLM classification/tagging	mcptube classify 1
mcptube report <video> [--focus] [--format] [-o]	Single-video illustrated report	mcptube report 1 --format html -o report.html
mcptube report-query "<topic>" [--tag] [--format] [-o]	Cross-video report	mcptube report-query "AI trends" --format html -o report.html
mcptube discover "<topic>"	YouTube search + LLM clustering	mcptube discover "prompt engineering"
mcptube synthesize-cmd "<topic>" -v <id1> -v <id2>	Cross-video synthesis	mcptube synthesize-cmd "AI" -v abc123 -v xyz789 --format html -o synthesis.html

Server

Command	Description	Example
mcptube serve	Start MCP server (Streamable HTTP)	mcptube serve
mcptube serve --stdio	Start MCP server (stdio transport)	mcptube serve --stdio
mcptube serve --host 0.0.0.0 --port 8080	Custom host/port	mcptube serve --host 0.0.0.0 --port 8080

Smart Video Resolver

All commands that accept a <video> or <query> argument support the smart resolver:

Input	Resolution
dQw4w9WgXcQ	Exact YouTube video ID
1	Index number from mcptube list (1-based)
"prompting"	Case-insensitive substring match on title or channel

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🔌 MCP Server

mcptube exposes 17 MCP tools that any MCP-compatible AI assistant can use.

Transport Modes

Mode	Command	Use Case
Streamable HTTP	mcptube serve	Claude Code, remote clients
stdio	mcptube serve --stdio	VS Code Copilot, Claude Desktop, Cursor

MCP Tools

Tool	Description	API Key Required
add_video(url)	Ingest a YouTube video	No
remove_video(video_id)	Remove from library	No
list_videos()	List all videos	No
get_info(video_id)	Full details + transcript	No
search(query, video_id?, limit)	Semantic search (single video)	No
search_library(query, tags?, limit)	Semantic search (all videos)	No
get_frame(video_id, timestamp)	Extract frame (returns image)	No
get_frame_by_query(video_id, query)	Search + extract frame	No
get_frame_data(video_id, timestamp)	Frame as base64	No
ask_video(video_id, question)	Ask about a video (passthrough)	No
ask_videos(video_ids, question)	Ask across videos (passthrough)	No
classify_video(video_id)	Get metadata for classification	No
save_tags(video_id, tags)	Save classification tags	No
generate_report(video_id, query?)	Report data (passthrough)	No
generate_report_from_query(query, tags?)	Cross-video report data	No
discover_videos(topic)	YouTube search results	No
synthesize(video_ids, topic)	Cross-video synthesis data	No

Passthrough tools return raw data (transcripts, metadata) for the connected AI to analyze. This means zero API key cost on the server — the client's own LLM does the work.

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🖥️ MCP Client Setup

Claude Code (Streamable HTTP)

1. Start the mcptube server:

mcptube serve

2. In a separate terminal, add the MCP server to Claude Code:

claude mcp add --transport http mcptube http://127.0.0.1:9093/mcp

3. Start using it:

> Use mcptube to add this video: https://www.youtube.com/watch?v=dQw4w9WgXcQ
> Search mcptube for "main topic"
> Generate a report for the first video

💡 Claude Code has terminal access, so it can also run CLI commands directly for better report quality.

VS Code Copilot (stdio)

1. Open MCP configuration (Cmd+Shift+P → "MCP: Open User Configuration") or create .vscode/mcp.json in your workspace:

{
  "servers": {
    "mcptube": {
      "command": "mcptube",
      "args": ["serve", "--stdio"]
    }
  }
}

2. Click the Start button next to the server entry.

3. Open Copilot Chat in Agent Mode and start using mcptube tools.

⚠️ If you installed mcptube in a virtual environment (not via pipx), you'll need the full path to the executable. Find it with which mcptube.

Claude Desktop (stdio)

1. Open the config file:

open ~/Library/Application\ Support/Claude/claude_desktop_config.json

2. Add the mcptube server:

{
  "mcpServers": {
    "mcptube": {
      "command": "/Users/<your-username>/.local/bin/mcptube",
      "args": ["serve", "--stdio"]
    }
  }
}

💡 Use the full path to mcptube (find it with which mcptube). If you used pipx, it's typically at ~/.local/bin/mcptube.

3. Restart Claude Desktop. You should see a tools icon (🔨) in the chat input.

Cursor (stdio)

1. Open Cursor Settings → MCP Servers, or edit .cursor/mcp.json:

{
  "mcpServers": {
    "mcptube": {
      "command": "mcptube",
      "args": ["serve", "--stdio"]
    }
  }
}

2. Restart Cursor and use mcptube tools in Agent mode.

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🔑 API Keys (BYOK)

Some CLI features require an LLM API key. Set one of:

export ANTHROPIC_API_KEY=sk-ant-...
# or
export OPENAI_API_KEY=sk-...
# or
export GOOGLE_API_KEY=AI...

What requires a key?

Feature	CLI	MCP
Add video	No (auto-classifies if key set)	No
Search / Frames	No	No
Ask questions	✅ Key required	No (passthrough)
Classify	✅ Key required	No (passthrough)
Reports	✅ Key required	No (passthrough)
Discover	✅ Key required	No (via yt-dlp)
Synthesize	✅ Key required	No (passthrough)

MCP passthrough = The connected AI assistant (Claude, Copilot, etc.) analyzes the data using its own model. No API key needed on the mcptube server.

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⚖️ CLI (BYOK) vs MCP: When to Use Which

	CLI with BYOK	MCP Passthrough
Speed	Faster — direct API call	Slower — client processes raw data
Accuracy	More deterministic — fine-tuned prompts per task	Depends on client LLM interpretation
Frame selection	Guided by specialized prompts	Client may hallucinate timestamps
Context limits	No limit (streams to LLM API)	May exceed client context window on long videos
Cost	Uses your API key	Zero cost — uses client's own model
Output	Markdown or HTML files	Inline in chat

Recommendation: Use CLI commands for reports, synthesis, and discovery. Use MCP tools for quick queries, search, and frame extraction.

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🔄 Workflows

Discovery → Add → Synthesize

# 1. Scout YouTube for relevant videos
mcptube discover "transformer architecture"

# 2. Add interesting videos to your library
mcptube add "https://www.youtube.com/watch?v=..."
mcptube add "https://www.youtube.com/watch?v=..."

# 3. Synthesize themes across them
mcptube synthesize-cmd "attention mechanisms" -v <id1> -v <id2> --format html -o synthesis.html

📌 discover results are NOT in your library. You must add them before you can search, ask, or synthesize.

Ask → Deep Dive → Report

# 1. Ask a quick question
mcptube ask "What are the main arguments?" -v 1

# 2. Search for specific moments
mcptube search "key conclusion" --video 1

# 3. Extract a frame at that moment
mcptube frame 1 245

# 4. Generate a full illustrated report
mcptube report 1 --format html -o report.html

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⚙️ Environment Variables

Variable	Default	Description
MCPTUBE_DATA_DIR	~/.mcptube	Root directory for all data (DB, frames, ChromaDB)
MCPTUBE_FRAMES_DIR	<data_dir>/frames	Directory for cached extracted frames
MCPTUBE_HOST	127.0.0.1	Server bind host
MCPTUBE_PORT	9093	Server bind port
ANTHROPIC_API_KEY	—	Anthropic API key (for CLI BYOK features)
OPENAI_API_KEY	—	OpenAI API key (for CLI BYOK features)
GOOGLE_API_KEY	—	Google API key (for CLI BYOK features)

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🏗️ Architecture

CLI (Typer)  ←──────┐
                     ├── Service Layer (McpTubeService)
MCP Server (FastMCP) ←─┘        │
                           ┌────┴────┐
                     Repository    VectorStore
                     (SQLite)      (ChromaDB)
                           │
                     Ingestion Layer
                     ├── YouTubeExtractor (yt-dlp)
                     ├── FrameExtractor (yt-dlp + ffmpeg)
                     ├── LLMClient (LiteLLM — CLI only)
                     ├── ReportBuilder (CLI only)
                     └── VideoDiscovery (CLI only)

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⚠️ Known Issues & Limitations

• Frame storage: Frames are cached in ~/.mcptube/frames (hidden directory). Override with MCPTUBE_FRAMES_DIR.
• Python 3.14: ChromaDB is not yet compatible with Python 3.14. Use Python 3.12 or 3.13.
• Long transcripts: Very long videos may exceed MCP client context limits in passthrough mode. CLI BYOK is recommended for long-form content.
• Multi-video frame accuracy: Cross-video reports may occasionally select frames from the wrong video. CLI reports use stricter prompts for better accuracy.
• Claude Desktop: Report generation may fail on context-heavy operations. Use shorter videos or CLI for reports.
• get_frame_data: Returns base64-encoded frames that can exceed client token limits (50K+ characters). Prefer get_frame for inline display.
• Concurrent access: Running CLI and MCP server simultaneously may cause SQLite conflicts.

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🧪 Development

git clone https://github.com/0xchamin/mcptube.git
cd mcptube
pip install -e ".[dev]"
pytest -v

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📄 License

MIT License — see LICENSE for details.

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Built with FastMCP · yt-dlp · ChromaDB · LiteLLM