The 23 players under contract, with the money around them.

Carries as_of: say how fresh the data is rather than presenting a stored squad as live.

Find one squad player by id, or by name (partial and accent-insensitive).

Returns the match, or every candidate when the query is ambiguous — never a guess, since acting on the wrong player is worse than asking again.

Filter the squad. position is one of GK, DEF, MID, FWD.

This searches the 23 players already owned, not the transfer market — the market needs the live source that step 4 adds.

Check a team sheet against §6.13, §6.17 and §10.3(l).

Bench order matters — the first substitute listed is the first to come on. This is authoritative: trust it over your own count of the formation.

Apply the §11 automatic substitutions to a team sheet.

unavailable is the starters who did not play, or whose match was abandoned or postponed after the round closed. Substitutes come on in bench order, same position only, three at most, and a replaced captain passes the armband on.

Check one swap against §6.4 and §6.8.

The incoming player is described by hand because there is no market data yet — step 4 replaces these arguments with a lookup. window is one of in_season, closed (February) or reopened.

What a player's quote does if they score round_points (§12.3-§12.4).

Scores of 1, 2 or 3 are not covered by the regulation and are treated as no movement — say so if it matters to the answer.

Search the whole Liga Record player market, not just the squad.

position is required — one of GK, DEF, MID, FWD. The site's endpoint returns nothing without one.

max_owned_percent finds differentials: players few other teams hold. A high-scoring player owned by 40% of the league gains you nothing on the field; the same player owned by 3% is where places are won.

This one reads the live site, so it is the only tool here whose answer can change without anyone editing a file. Results are cached for 15 minutes — quotes only move when a round is scored.

Check a real transfer: one squad player out, one market player in.

Both are player ids. Unlike check_transfer, the incoming player's price and position come from the live market rather than being described by hand — so the budget arithmetic uses their actual quote.