Agents write the cards. You remember.

The empty deck is the old problem.

You sign up for a spaced-repetition app. You mean to write cards. You don’t. The queue stays empty, and the habit never starts.

Cards.Fast is the other way around. Your agent writes. You study.

Sign up on app.cards.fast. The account is free. Free is one deck and one hundred cards. A second deck, or card one hundred and one, is paid. Pricing is that line, nothing more.

Agents create the cards

Point Claude, Cursor, or another agent at Cards.Fast. Cards land in your account, in the inbox.

The tools follow the same rules a careful human would: one fact, a question that stands alone, a short answer. No list cards. No copied paragraphs. No invented facts.

How to wire Claude Code or Cursor is on Dev tools. That page is for agents. This one is the product.

Inbox

New agent cards wait in a holding area.

You accept what you want to remember. You edit what is close. You dismiss the rest.

Nothing enters the review queue until you say so. The manual is the short version of that loop.

FSRS-5 review

The study surface is quiet on purpose.

Reveal the answer. Then Again, Hard, Good, or Easy. Space reveals. 1–4 rate.

Intervals come from FSRS-5, the scheduler serious SRS tools already use. We did not invent our own.

Markdown is the source of truth

A card is a small Markdown file. Frontmatter is optional (id, deck, tags, source). Scheduling state lives with the card.

You can read a card. You can move a card. You can leave with a card.

Export when you want

Export to Anki (.apkg), Mochi, CSV, or Markdown. Import from Anki, CSV, and Markdown.

Anki import brings the content, not the old schedule.

If you are deciding between tools, start at Compare. Cards.Fast is not a lock.