Recent calibre-web releases (upstream) no longer ship the REST API: /api/* was removed and does not exist in any 0.6.9+ release nor in master. The stable, documented interface is OPDS (/opds, /opds/new, /opds/search?query=...), which uses HTTP Basic Auth and exposes per-format download links. OPDS is also supported by Calibre's Content Server, so this app covers both backends.

Features

Catalog sections (new arrivals, authors, categories, shelves, ...) from the /opds index
Automatic pagination (rel="next" links)
Text search (/opds/search)
Covers with local cache
Book detail: author, description, formats with size
Download with progress bar to ~/Downloads
HTTP Basic Auth (empty user = anonymous browsing)
"Ignore SSL errors" option for self-signed certificates

Build

You need the Sailfish SDK (on Linux: flatpak install flathub org.sailfishos.sdk or the tarball).

git clone <this repo> harbour-calibreweb
cd harbour-calibreweb

# pick a target, e.g.:
sfdk target install SailfishOS-4.6.0.11-armv7hl
sfdk target use SailfishOS-4.6.0.11-armv7hl

sfdk build                 # produces the RPM in RPMS/
sfdk deploy                # installs on the connected device

Alternatively, install the RPM manually:

pkcon install-local harbour-calibreweb-0.1.0-1.armv7hl.rpm

Recommended targets by device: armv7hl (Xperia X, Jolla C...), aarch64 (Xperia 10 II/III, Jolla C2), x86_64 (emulator). For the Jolla Phone 2026 (MediaTek Dimensity, jp2601): aarch64 with Sailfish OS 5.0, e.g. SailfishOS-5.0.0.62-aarch64 (or the latest 5.0.x available in your SDK version).

Configuration

Open the app → menu → Settings:

Field	Value
Calibre Web address	e.g. `https://calibre.example.com` (subpath supported)
User	leave empty if anonymous browsing is enabled on calibre-web
Password	your account password (Basic Auth)
Ignore SSL	enable only if the server uses a self-signed certificate

Then hit Test connection and browse.

Structure

src/                C++: settings (QSettings), apiclient (feeds+covers),
                    downloader (progress), opdsparser (Atom/OPDS), main
qml/pages/          MainPage (index), FeedPage (lists+pagination),
                    BookDetailPage (detail+download), SearchPage, SettingsPage
qml/cover/          app cover
icons/              86/108 px icons + generation script
rpm/                spec and desktop file

Known limitations

The password is stored in plain text in the app settings (/home/nemo/.config/harbour/calibreweb.conf) — acceptable for personal use. The file is fixed and shared between the launcher (nemo) and SSH debug (defaultuser): the config does not depend on which user launches the app.
Search uses the server's engine; results are identical to the web UI.
The C++ core (parsing, auth, download) is tested with Qt 5.15 against real OPDS feeds and a Basic Auth mock; the Silica UI requires the SDK for on-device verification.

Core tests

# mock OPDS server + end-to-end test (see local /tmp repo):
python3 /tmp/mock_opds.py
# compile and run /tmp/opds_test (Qt 5.15+)

License

MIT