Fuzzy name lookup for FIDE-rated chess players. Returns candidate matches with their FIDE ID, current rating, title (GM/IM/etc.), and country. Use this to resolve a plain-English name (e.g. 'Carlsen', 'Ding Liren') to the FIDE ID that every other tool needs.

Full stats for one player: identity, monthly rating history, peak / trend stats, career W/D/L by color and time control, top-10 openings as White and Black, opponent analysis by rating bracket, notable wins and worst losses, top events with performance ratings. Often enough on its own for 'how strong is X, what do they play, who have they beaten'.

For a given player, colour and starting position, return both the moves the player actually chose (frequency + win rate) and the underlying games. Position is specified either as a move sequence in SAN (line) or a raw FEN. Use line iteratively to walk the opening tree: call once with empty line, pick a move, call again with line extended by that move, etc. When preparing for a real game, weight recent games (last 12-24 months) more heavily than old ones, classical over-the-board > rapid/blitz > online, and look for variations the player scores poorly in (below ~40%) or plays with less variety (shallower prep).

Move statistics from all 11.7M+ indexed games at a given position — game counts, win percentages, top continuations. Answers 'from position P, how often does White play 4. O-O vs 4. d3, and which scores better'.

Short Stockfish evaluation at a position. Returns the top-N candidate moves with score (centipawns from side-to-move POV, positive = advantage; or mate distance) and the principal variation for each. Defaults: 2s think time, top-3 lines. PV moves come back in UCI notation (e2e4, not e4). Use this to sanity-check candidate lines from get_position_stats or get_player_preparation — human game frequency tells you what people play, engine evaluation tells you what's actually good.

Complete head-to-head record between two players. Includes overall and per-colour W/D/L (from player A's perspective), splits by time control, most-played openings between them, first / last meeting, average game length, and the game list.

Tournaments currently being broadcast live on chess.ceo. Use this when the user asks 'what's on right now' / 'live tournaments today'.

Players participating in one live-broadcast tournament.

Which currently-live broadcasts a given player is competing in. Use when the user asks 'is X playing anywhere right now'.

One call, three parallel fetches at the same position: opponent's stats on their side, your stats on your side, and the 11.7M-game general database at that position. Use this while walking the opening tree — one round trip instead of three separate calls, and you can compare the three views directly (e.g. opponent has 2 games here but the general DB has 8k → prep candidate).