libsocial-core

libsocial-core (import libsocial): the part of the SDKs every lib.social site shares. It's installed with ranobelib-python-sdk and mangalib-python-sdk, and is meant to be used through them. You need it directly only to build a package for another site.

What it has:

• ApiClient: the api.cdnlibs.org client, scoped to a site by a Site (id and origin). It bounds concurrency, retries 429/5xx with backoff, and paces requests through a Pacer shared by every client in the process that talks to the same host (shared_pacer()).
• TitleClient: one title's metadata, table of contents, translations, chapter fetching and whole-title download, with a disk cache. A site package subclasses it, setting the site and its own models as class attributes.
• Catalog: catalog listing and search, and the genre, type and status lists, filtered to the site.
• The shared models (Title, Chapter, ChapterBranch, Volume, ...) and exceptions, all derived from LibSocialError.

from libsocial import Site, TitleClient
from libsocial.models import Chapter, Title, Volume


class MyChapter(Chapter):
    content: str | None = None


class MyVolume(Volume[MyChapter]):
    pass


class MySite(TitleClient[Title, MyChapter, MyVolume]):
    site = Site(id=3, origin="https://ranobelib.me")
    title_model = Title
    chapter_model = MyChapter
    volume_model = MyVolume


async with MySite("https://ranobelib.me/ru/book/6712--high-school-dxd-novel") as client:
    info = await client.get_info()

A site package adds what depends on its chapters: text and export for ranobelib, page images and export for mangalib. It can override _create_client() (its own ApiClient subclass) and _plan_chapters() (which chapters a whole-title operation takes, as mangalib does to leave out closed ones).

examples/core/ has the snippet above grown into a working client for slashlib.me (a site with no package of its own) with both overrides, plus scripts for the raw ApiClient, a site's Catalog, shared pacing and console output, and ranobelib and mangalib used together.

See the API reference.