Connect Claude, ChatGPT & Cursor to your knowledge base

Why connect your KB to your AI

Without a shared memory, every chat starts from zero — and the same context lives in your head, in a notes app, and pasted into three different assistants. Connecting your knowledge base over MCP gives every AI you use the same recall, on demand.

BrainTube is the memory that fills itself: auto-captured from YouTube, podcasts, PDFs, EPUBs, web articles, Notion (4-hour sync), meeting audio and screenshots. Once it's in, every connected AI can read it.

Per-client setup

1. Claude.ai — one-click OAuth

Open Claude.ai → Settings → Connectors → Add custom connector. Paste https://mcp.brain-tube.com/mcp and sign in when prompted. No API key needed; Claude.ai uses OAuth.

2. Claude Desktop — JSON config

Open the Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Add the BrainTube streamable-http server with your X-BrainTube-Token header (the exact JSON is on the connect page), then restart Claude.

3. Cursor — Settings → MCP

Cursor → Settings → MCP → Add Server. Use the same URL and header. Save and restart.

4. ChatGPT — custom connector

ChatGPT's custom connector flow accepts MCP-style endpoints. Add the BrainTube URL and authenticate with your API key. Detailed steps live on the connect page.

Discoverable in the official MCP registry + Smithery

BrainTube is listed in the official MCP registry and on Smithery, so any MCP-aware client can find and add it without you copy-pasting URLs.

Where to get your API key

Frequently asked

Why connect my knowledge base to my AI?

So you stop re-pasting context. Every chat starts with your library already loaded — your saved videos, podcasts, PDFs, articles. The AI reads what's relevant on demand.

Do I need a paid plan?

Connecting an AI to your library over MCP is a paid feature. The Free plan lets you build and use your knowledge base inside the BrainTube app; paid plans add MCP access — so Claude, ChatGPT, Cursor and other clients can query your corpus — plus more monthly tokens.

Where do I get an API key?

Sign in to BrainTube and create one under Settings. Keys are shown once at creation, hashed at rest, and can be rotated or revoked anytime.

Is BrainTube in the official MCP registry?

Yes — and on Smithery. You can discover and add BrainTube through either, in addition to the manual JSON config.

Is my data private?

Each user's corpus is private to their own account. Your library is not shared or used to train models on other users' behalf.