Look up a Lichess player: ratings in every format they play, title, country, account stats, and their current win/loss/draw streak.

Autocomplete Lichess usernames from a partial string. Use this to resolve a half-remembered or misspelled username before calling other tools.

Fetch a player's most recent games with PGN, result, opponent, opening and accuracy. Optionally filter to one time format or one colour.

Computer analysis of a single Lichess game: per-player accuracy and average centipawn loss, plus every blunder, mistake and inaccuracy with the move that was played, the engine's preferred move, and the evaluation swing.

Win/draw/loss breakdown for one player in a specific opening, as a given colour. Scans the player's recent games and aggregates by opening name.

Today's Lichess daily puzzle: the FEN to solve, whose move it is, the puzzle rating, its tactical themes, and the solution in UCI and SAN.

Evaluate a chess position given as a FEN using Lichess' cloud engine cache. Returns the top engine lines with evaluations, in readable SAN notation.

Details and standings for a Lichess arena or Swiss tournament: name, time control, player count, games played, and the leaderboard.