flashcard-mcp

An MCP server that gives Claude (or any MCP client) the ability to create, review, and manage flashcards with spaced repetition (SM-2 algorithm).

Organize cards into projects, tag them by topic, and let the scheduling algorithm figure out when you need to see each card again.

100% vibecoded.

Tools

• create_project / list_projects — organize cards into projects
• create_flashcard / list_flashcards / delete_flashcard — manage cards
• get_due_flashcards — get cards that are due for review
• review_flashcard — record how well you remembered (1-4), updates the schedule
• get_flashcard_answer — reveal the answer after quizzing yourself

Running locally (stdio)

npm install
npm run build
npm start

Add to your MCP config:

{
  "mcpServers": {
    "flashcards": {
      "command": "node",
      "args": ["/path/to/flashcard-mcp/dist/index.js"]
    }
  }
}

Cards are stored in a local flashcards.json file.

Deploying to Vercel (remote HTTP)

The api/mcp.ts endpoint runs as a Vercel serverless function, backed by Upstash Redis instead of a local file.

Connect an Upstash Redis database via Vercel's Storage integration — it'll set up KV_REST_API_URL and KV_REST_API_TOKEN automatically.

Optionally set FLASHCARD_API_KEY to require Bearer token auth.