Get authenticated user info (id, username, name, books count).

Get library reading statistics: total books, books per status, average rating, and books read in a given year.

Search Hardcover by title, author, or ISBN. Supports multiple entity types: books (default), authors, series, lists, users, publishers, characters, and prompts.

Get detailed info about a specific book by its Hardcover ID or slug.

Get books from your library. Filter by reading status or finished-date range (start_date + end_date). Sort by rating, title, or updated date. Use sort='rating', order='desc' to get top-rated books. Use start_date + end_date to answer 'what did I read in May last year?'

Get your library entry for a book: status, rating, reads.

List your reviews, newest first. Includes review text, rating, and book info.

List all books you have marked as owned. Returns title, authors, and edition details.

Get your active reading goals with target, metric, progress, and date range.

Get your Hardcover lists. Returns id, name, books count, privacy.

Get a specific Hardcover list with its books by list ID.

Get a book series by id, slug, or name with books in reading order.

Get an author's details and books by Hardcover ID, slug, or name.

Get edition details by Hardcover ID, ISBN-13, or ASIN.

Set a book's status, rating, review, privacy, and private notes. Preserves unspecified fields.

Create or update a reading goal with target, metric, dates, and optional description/privacy.

Mark an edition as owned or not owned. Use get_edition to find the edition ID first.

Add a reading date or progress entry. Updates active read if one exists. Supports page progress and audiobook time tracking.

Update a reading date or progress entry. Preserves unspecified fields. Supports page progress and audiobook time tracking.

Delete a reading date entry by its ID. This cannot be undone.

Remove a book from your library entirely. This cannot be undone.

Create a new Hardcover list.

Update an existing Hardcover list's name, description, or privacy.

Delete a Hardcover list by ID. This cannot be undone.

Add a book to a Hardcover list.

Remove a book from a list. Use id or list_id + book_id.

Fetch reading journal entries for the authenticated user. Includes notes, quotes, status changes, ratings, reviews, and progress updates. Supports optional filters: book_id, event type, limit, and offset.

Create a reading journal entry (for example a note or quote) for a book.

Delete a reading journal entry by ID.