Quizlar MCP Server

Quizlar is voice-powered AI flashcards with spaced repetition. This MCP server lets Claude, Cursor, Cline, or any MCP-compatible client:

Create flashcard decks from YouTube videos, PDFs, web pages, or raw text
Run interactive text quizzes with automatic grading
Track memory with FSRS spaced repetition

Voice quizzing happens in the Quizlar web app — the MCP server delivers the deck-creation and text-quizzing tools to your editor.

This repo hosts the registry submission (server.json) for the hosted MCP server at https://mcp.quizlar.app/mcp/. The server itself is closed-source; this repo is the public discovery surface.

Setup

Mint an API key at https://quizlar.app/settings/api-keys (format: sk-qz-<32 chars>).
Add Quizlar to your MCP client using the snippets below.

Claude Desktop

In claude_desktop_config.json (or via the Connectors UI):

{
  "mcpServers": {
    "quizlar": {
      "type": "streamable-http",
      "url": "https://mcp.quizlar.app/mcp/",
      "headers": { "Authorization": "Bearer sk-qz-..." }
    }
  }
}

Cursor

~/.cursor/mcp.json:

{
  "mcpServers": {
    "quizlar": {
      "url": "https://mcp.quizlar.app/mcp/",
      "headers": { "Authorization": "Bearer sk-qz-..." }
    }
  }
}

Cline

In Cline's settings, add a new MCP server:

URL: https://mcp.quizlar.app/mcp/
Header: Authorization: Bearer sk-qz-...

Links

Listing: registry.modelcontextprotocol.io (search "Quizlar")
App: https://quizlar.app
Issues: https://github.com/quizlar/mcp-server/issues

License

MIT for this configuration repo. The hosted MCP server itself is proprietary.

Quizlar — voice-powered AI flashcards with spaced repetition