Generating Cards

Amber creates flashcards by analyzing your Claude Code conversations. There are two ways to generate cards.

Using the Claude Code skill

In any Claude Code session, run:

/flashcards

The skill scans your recent conversations (stored as JSONL in ~/.claude/projects/), extracts key concepts, and generates flashcards. It then uploads them to your Amber account.

Using the CLI

If you prefer more control, use the CLI directly:

amber-cards upload

This does the same thing — scans conversations, generates cards, and uploads them.

What gets extracted?

The card generator looks for:

• New APIs or libraries you learned about
• Debugging techniques and solutions
• Architectural patterns and design decisions
• Configuration and setup steps
• Language features or syntax you encountered

Each card has a front (the question/prompt) and a back (the answer/explanation), both stored as plain text that may include code snippets.

Card quality

Cards are generated to test understanding, not surface-level recall. Instead of “What does Array.map do?”, you’ll get questions like “How would you transform an array of user objects into an array of just their email addresses?”

Deduplication

If a concept already exists in your collection, it won’t create a duplicate card. The generator compares against your existing cards before uploading.