Search Luogu problems by keyword. Use this before fetching a problem when you only know a topic or partial title.

Fetch a Luogu problem statement, formats, samples, tags, difficulty, and source URL by pid.

Resolve a Luogu problem from a URL, problem id, or title fragment, then fetch the problem details.

Find related Luogu practice problems by mixing topic/pain-point recommendations with live keyword search.

List canonical algorithm topics, aliases, and known Luogu tag ids used by the high-level topic search route.

Find Luogu practice problems for an algorithm topic using aliases, known Luogu tag ids, deduplication, and match reasons.

Search Luogu training/problem sets by keyword.

Fetch a Luogu training/problem set and its problem summaries by id.

Recommend seed Luogu problems from a topic or student pain point, with search hints for further exploration.

Fetch public Luogu user profile data by uid.

Report which LeetCode-style route capabilities are available, auth-required, or planned for Luogu.