Marketing Brain — AI skill for Claude Code

🧠 Marketing Brain — Personal RAG MCP for Claude Code

Built by [Amir Baldiga](https://linkedin.com/in/amirbaldiga) · [amirbaldiga.com](https://amirbaldiga.com)

A personal knowledge base that plugs directly into Claude Code as an MCP server. Drop in your markdown files, blog posts, notes, reports, and WhatsApp chats — and ask questions in natural language. Answers come from YOUR content, not from hallucination.

Supports **Hebrew and English**. Works with local files, URLs, RSS feeds, and YouTube videos.

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What is RAG?

**RAG (Retrieval-Augmented Generation)** is a technique that gives an AI model access to your own documents at query time. Instead of relying on its training data, Claude searches your personal knowledge base and answers based on what YOU wrote.

Three components make it work:

• Voyage AI — the translator: converts text into vectors (lists of numbers that represent meaning)
• ChromaDB — the librarian: stores those vectors locally and finds the most relevant ones
• Claude — the expert: reads the retrieved chunks and generates a grounded answer

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Features

Tool	What it does
brain_search	Semantic search across all your docs — ask anything in Hebrew or English
brain_list_sources	See everything currently in the brain
brain_ingest	Re-scan /docs folder and add new files
brain_add_url	Fetch any webpage and make it instantly searchable
brain_add_rss	Ingest an entire RSS/Atom feed
brain_add_youtube	Pull a YouTube transcript (auto or manual captions)
brain_about	About this tool and how to connect with the creator

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Requirements

• Python 3.10+
• Claude Code (free or paid plan)
• Voyage AI API key — free tier (200M tokens free after adding payment method)

**No Anthropic API key needed.** The MCP server works through your existing Claude Code plan — Claude Code handles all AI calls automa