How is this different from a standard YouTube summarizer?

Unlike standard tools that create isolated summaries, this skill synthesizes information by topic. It merges new insights into existing notes and flags contradictions, creating a cohesive, cross-linked 'Second Brain' rather than a pile of disconnected files.

Which AI agents and note-taking apps are supported?

The skill works with any AI agent capable of file system operations, such as Claude Code, Cursor, or Codex CLI. It produces standard Markdown files with relative links, making it fully compatible with Obsidian or any Markdown-based knowledge management system.

What exactly is included in the purchase?

You will receive the core logic for the agent, a detailed README with setup instructions, and a sample output folder demonstrating how the skill merges content from multiple videos into a unified structure.

Do I need to manually provide transcripts for every video?

While the skill can process pasted transcripts, it is optimized for automatic fetching via TranscriptAPI (recommended), yt-dlp, or youtube-transcript-api. Setup instructions for these tools are included to ensure seamless playlist processing.

Can I process a full YouTube playlist at once?

Yes, the skill is designed to handle entire playlists. It tracks your progress to ensure no video is processed twice and provides status updates as it builds out your knowledge base.

Youtube videos to knowledge base

Example session with this skill installed

I just watched this video on LLM agents: https://www.youtube.com/watch?v=dQw4w9WgXcQ. Please add it to my knowledge base.

Read your context and instructions
Compiled the youtube videos to

I've processed the video and updated your knowledge base. No duplicate ID was found, so a new source file was created and the transcript was parsed for concepts and tools.

Knowledge Base Update

Category	Item	Action	Path
Source	"Building Autonomous Agents"	Created	`sources/video-dQw4w9WgXcQ.md`
Domain	AI & Automation	Updated	`ai-and-automation/_domain.md`
Topic	Agent Orchestration	Merged	`ai-and-automation/agent-orchestration.md`
Topic	Planning Algorithms	Created	`ai-and-automation/planning-algorithms.md`

Extraction Summary

Concepts: Recursive task decomposition, ReAct prompting loops, long-term memory retrieval.
Tools: LangGraph, AutoGPT, CrewAI.
Action Items: Test the new state-machine approach for multi-agent handoffs.
Conflicts: None detected. The content aligns with your existing notes on LLM reasoning.

Next steps

Review the new Planning Algorithms note to see the extracted architecture diagrams.
Run a connections check since you have now added 6 sources since the last audit.
Check the sources/ file for the timestamped link to the section on "Memory Bottlenecks."

Connects securely to your tools. The creator never sees your data.

About this skill

Most YouTube skills give you one summary per video. After 50 videos you have 50 summaries and still can't find what you learned about a topic. This skill builds a knowledge base instead. Give it a YouTube link, a playlist or a pasted transcript, and it: - Sorts ideas by topic, not by video, into domains and topic notes - Merges genuinely new points into notes you already have, and skips what you already know - Flags real contradictions between sources (and doesn't invent fake ones) - Never processes the same video twice - Handles whole playlists with progress updates - Keeps a source record per video: concepts, tools mentioned, action items - Offers a "connections check" to link related ideas across topics Plain Markdown with relative links: works as an Obsidian vault, in any editor, with any AI model. Includes real example output from two videos, showing the second one merging into the first. Needs an agent that can read and write files (Claude Code, Claude with folder access, Cursor, Codex CLI). Fetches transcripts automatically with a transcript tool, yt-dlp or youtube-transcript-api; otherwise paste the transcript. Recommended transcript tool: TranscriptAPI (transcriptapi.com), which the skill was built and tested with. New accounts get 100 free credits with no card, about 100 videos, and setup instructions are in the README.

How to use

Skills on Agensi run inside your AI agent. Copy the prompt, paste it into your agent, and it connects to Agensi and installs this skill for you. If a payment is needed, your agent shows it to you first.

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Youtube videos to knowledge base