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Acornonaut MCP Server
AI-powered flashcard generation from YouTube videos — Turn any YouTube playlist into spaced-repetition flashcards and manage your learning library through any MCP-compatible AI client.
This is the official MCP server for Acornonaut, hosted at https://mcp.acornonaut.app/mcp and listed in the official MCP Registry as `app.acornonaut/mcp`. (The older registry entry io.github.zerolve-io/acornonaut is deprecated — same server, superseded name.)
✨ Features
- 🎥 YouTube to flashcards — AI-generated cards from video transcripts
- 🧠 Spaced repetition — SM-2 algorithm for optimal review scheduling
- 📚 Playlist management — Organize learning content by topic
- 🔍 Semantic search — Find cards across your entire library
- 📦 Anki export — Export decks to Anki format
- 🔐 OAuth 2.0 — Secure, browser-based authentication
🚀 Quick Start
Claude (web, desktop, mobile)
Add Acornonaut from Claude's connector directory, then sign in with your Acornonaut account. No config file needed.
Claude Desktop (config file)
Add to ~/Library/Application Support/Claude/claude_desktop_config.json:
{
"mcpServers": {
"acornonaut": {
"url": "https://mcp.acornonaut.app/mcp"
}
}
}Restart Claude Desktop. On first use, your browser will open for OAuth sign-in.
Cursor
Add to ~/.cursor/mcp.json:
{
"mcpServers": {
"acornonaut": {
"url": "https://mcp.acornonaut.app/mcp",
"transport": "streamable-http"
}
}
}Windsurf
Use MCP Server settings:
- Name:
acornonaut - URL:
https://mcp.acornonaut.app/mcp - Transport:
streamable-http
Or JSON config:
{
"mcpServers": {
"acornonaut": {
"url": "https://mcp.acornonaut.app/mcp",
"transport": "streamable-http"
}
}
}Continue.dev / Cline
Add to your MCP config:
{
"mcpServers": {
"acornonaut": {
"url": "https://mcp.acornonaut.app/mcp"
}
}
}OpenClaw
{
"mcpServers": {
"acornonaut": {
"url": "https://mcp.acornonaut.app/mcp"
}
}
}🔐 Authentication
Acornonaut MCP uses OAuth 2.0 for secure authentication:
- On first connection, your browser opens automatically
- Sign in to Acornonaut (or create a free account)
- Grant MCP access
- Return to your AI client — you're connected!
No API keys to manage. Tokens are stored securely by your MCP client.
🛠️ Available Tools
| Tool | Description |
|---|---|
| Playlists | |
list_playlists | List all your playlists with status and progress |
search_playlists | Search playlists by name or topic |
get_playlist | Get a single playlist with videos and cards |
create_playlist | Create a new playlist from a YouTube URL |
update_playlist | Rename or update playlist settings |
delete_playlist | Permanently delete a playlist and its cards |
| Videos | |
add_video_by_url | Add a single YouTube video to a playlist |
get_video_cards | Get all flashcards for a specific video |
get_transcript | Retrieve the full transcript of a video |
| Cards | |
list_cards | List paginated flashcards with filters |
get_card | Get a single card by ID |
create_card | Create a custom flashcard manually |
update_card | Edit a card's front, back, or metadata |
delete_card | Delete a specific card |
search_cards | Full-text search across all your cards |
regenerate_cards | Regenerate a video's cards with fresh AI output |
| Spaced Repetition | |
get_due_cards | Get cards due for review today |
record_review | Submit a review answer and update scheduling |
get_stats | View your review statistics and streaks |
| Export | |
export_deck | Export a deck to Anki, CSV, or JSON |
Total: 20 tools
📖 Example Usage
Create a playlist from YouTube
Ask your AI: "Create an Acornonaut playlist from https://www.youtube.com/playlist?list=..."Search your flashcards
Ask your AI: "Search my Acornonaut cards for 'photosynthesis'"Review due cards
Ask your AI: "What cards are due for review in Acornonaut today?"Export to Anki
Ask your AI: "Export my 'Biology 101' playlist from Acornonaut as an Anki deck"🔗 Links
- Product: https://acornonaut.app
- Documentation: https://acornonaut.app/docs/mcp
- MCP Registry listing:
app.acornonaut/mcpin the official MCP Registry - MCP Spec: https://modelcontextprotocol.io
📝 License
MIT License - see LICENSE file.
Built with ❤️ by the Acornonaut team
Claude plugin
claude-plugin/ is the Acornonaut plugin for Anthropic's Claude directory: this server plus a study skill. It is submitted from this repository with plugin path claude-plugin.