MCP server

Chessigma Official

com.chessigma/chessigma

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Chess opening guides and names, FEN and PGN checks, the daily chess puzzle and Elo estimates.

Website Source

At a glance

Type

MCP server

Publisher

chessigma.com (verified by the MCP Registry)

Status

Working at last check

Tools

7

Token cost

About 1,634 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http chessigma https://www.chessigma.com/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.chessigma]
url = "https://www.chessigma.com/api/mcp"

Gemini CLI

{"mcpServers":{"chessigma":{"httpUrl":"https://www.chessigma.com/api/mcp"}}}

Cursor

{"mcpServers":{"chessigma":{"url":"https://www.chessigma.com/api/mcp"}}}

VS Code

{"servers":{"chessigma":{"type":"http","url":"https://www.chessigma.com/api/mcp"}}}

Antigravity

agy mcp add chessigma https://www.chessigma.com/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"chessigma","server_url":"https://www.chessigma.com/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"chessigma","server_url":"https://www.chessigma.com/api/mcp"}

Tools

• analyze_game ~252 tokens
  Summarize a chess game given as a PGN or as plain SAN movetext: players, result, number of plies, the opening and how long it followed theory, how the game ended (checkmate, stalemate, draw by rule, or unfinished or resigned) and the final position. Returns a link that opens the whole game on the ch
• analyze_position ~247 tokens
  Read a chess position from a FEN and return facts computed by the rules alone: side to move, status (normal, check, checkmate, stalemate or insufficient material), every legal move in SAN, the material count (pawn 1, knight 3, bishop 3, rook 5, queen 9) and the opening name when the position is a ca
• calculate_elo ~240 tokens
  Estimate a player's new Elo rating after a single game with the Elo formula. Pure arithmetic, no chess engine. The system field picks a K-factor default for FIDE, Chess.com or Lichess, but the result is an Elo estimate: Chess.com and Lichess use Glicko ratings, so their real rating changes differ.
• get_daily_puzzle ~227 tokens
  Get Chessigma's daily chess puzzle: today's by default, or a past day's via date (YYYY-MM-DD, from 2024-01-01 to today in UTC). The position (fen) is given with the solver to move, after the opponent's last move. The solution is in SAN, with the solver's moves at even indexes and the opponent's repl
• get_opening_guide ~262 tokens
  Look up a chess opening by name or slug (for example "London System", "Caro-Kann" or "sicilian-defense") and return Chessigma's guide to it: the main line in SAN, a short summary, up to four key variations with the idea behind each, the strategy for each side, strengths and weaknesses. Full guides e
• identify_opening ~204 tokens
  Identify the chess opening of a move sequence, given as SAN movetext ("1. e4 c5 2. Nf3 d6") or a full PGN. Returns the ECO code and name from a catalogue of about 3,700 named lines, how many half-moves (plies) followed known theory from move one, the first move that left it, a link to Chessigma's tr
• review_online_game ~202 tokens
  Turn the link of a public Chess.com live game or a Lichess game into a chessigma.com link that imports the game and opens a move-by-move review, computed by Stockfish in the user's browser. Nothing is fetched when this tool runs: the game is read from Chess.com or Lichess only when the user opens th

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