Quizlar
Quizlar MCP Server
Voice-led, FSRS-scheduled flashcards from YouTube, PDFs, web, or text. Auto-graded quizzes.
Quizlar's MCP server lets Claude, Cursor, Cline, Windsurf, or any MCP-compatible client:
- Create flashcard decks from YouTube videos, PDFs, web pages, or pasted text
- Run auto-graded quizzes with the same tier-1-exact-match → phonetic → LLM grading pipeline that powers the voice product
- Track memory with FSRS spaced repetition — Quizlar is the scheduler of record, every answer updates real memory state
This repo is the public discovery surface (server.json for the Official MCP Registry + a stdio bundle for clients that need it). The hosted MCP server itself is closed-source and runs at https://mcp.quizlar.app/mcp/.
Listings
- Official MCP Registry —
io.github.quizlar/mcp-serverv1.0.0 - Smithery — https://smithery.ai/servers/quizlar/quizlar
Setup
- Mint an API key at https://quizlar.app/settings/api-keys (format:
sk-qz-<32 chars>). - Pick your client below and paste the snippet.
Cursor
~/.cursor/mcp.json:
{
"mcpServers": {
"quizlar": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.quizlar.app/mcp/",
"--header",
"Authorization:Bearer ${QUIZLAR_API_KEY}"
],
"env": { "QUIZLAR_API_KEY": "sk-qz-..." }
}
}
}
Windsurf
~/.codeium/windsurf/mcp_config.json — Windsurf supports Streamable HTTP natively, no wrapper needed:
{
"mcpServers": {
"quizlar": {
"serverUrl": "https://mcp.quizlar.app/mcp/",
"headers": { "Authorization": "Bearer ${QUIZLAR_API_KEY}" }
}
}
}
Then export QUIZLAR_API_KEY=sk-qz-... in your shell.
Claude Desktop
Open Settings → Connectors → "Add custom connector":
- Name: Quizlar
- URL:
https://mcp.quizlar.app/mcp/ - Add header → Name:
Authorization, Value:Bearer sk-qz-...
Or edit claude_desktop_config.json directly using mcp-remote:
{
"mcpServers": {
"quizlar": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.quizlar.app/mcp/",
"--header",
"Authorization:Bearer ${QUIZLAR_API_KEY}"
],
"env": { "QUIZLAR_API_KEY": "sk-qz-..." }
}
}
}
Cline
Edit cline_mcp_settings.json (Cline → Settings → MCP Servers → "Edit JSON"):
{
"mcpServers": {
"quizlar": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.quizlar.app/mcp/",
"--header",
"Authorization:Bearer ${QUIZLAR_API_KEY}"
],
"env": { "QUIZLAR_API_KEY": "sk-qz-..." }
}
}
}
Detailed steps in llms-install.md.
Smithery
npx -y @smithery/cli@latest install @quizlar/quizlar --client claude
Replace claude with cursor, windsurf, etc. Smithery walks you through pasting your API key.
Tools
22 tools mapped 1:1 to learner verbs:
- Ingest:
create_deck_from_youtube,create_deck_from_pdf,create_deck_from_url,create_deck_from_text,import_shared_deck,get_job_status - Quiz:
quiz_me(composite: build + start in one call),start_quiz,next_card,submit_answer,end_quiz - Review:
get_study_recommendations,get_progress,get_streak,get_analytics - Manage:
list_decks,get_deck,update_deck,delete_deck,add_card,update_card,get_user_profile,update_preferences
Auth
Bearer API key (sk-qz-<32 chars>) is the simplest path and works in every client snippet above. Quizlar also exposes full OAuth 2.1 with Dynamic Client Registration + PKCE at https://mcp.quizlar.app/.well-known/oauth-authorization-server for clients that prefer a browser flow.
Links
- App: https://quizlar.app
- Issues: https://github.com/quizlar/mcp-server/issues
- Stdio bundle source:
bundle/(used to publish to Smithery + any other stdio-only client)
License
MIT for this configuration repo. The hosted MCP server itself is proprietary.
Server Config
{
"mcpServers": {
"quizlar": {
"url": "https://mcp.quizlar.app/mcp/",
"headers": {
"Authorization": "Bearer sk-qz-YOUR_API_KEY"
}
}
}
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