Chess.com MCP Server

A Model Context Protocol server written in TypeScript for Chess.com's public API. It exposes the complete documented Chess.com PubAPI through 30 tools and seven resources without authentication.

Install from npm

Requirements: Node.js 20.9 or newer.

Run the latest published package directly:

npx -y chess-mcp-node@latest

The default transport is stdio. The package is distributed through npm and can also be installed from the VS Code MCP gallery after its registry metadata is published.

For VS Code, create or open .vscode/mcp.json in your workspace:

{
  "servers": {
    "chess": {
      "command": "npx",
      "args": ["-y", "chess-mcp-node@latest"]
    }
  }
}

After publication, search for @mcp chess in VS Code and select Install to add the server from the MCP gallery.

For Claude Desktop, add the server to its MCP configuration:

{
  "mcpServers": {
    "chess": {
      "command": "npx",
      "args": ["-y", "chess-mcp-node@latest"]
    }
  }
}

Run from source

Requirements: Node.js 20.9 or newer.

npm ci
npm run build
npm start

The default source-run transport is stdio. To run the optional SSE transport:

# macOS/Linux
MCP_TRANSPORT=sse npm start

# Windows PowerShell
$env:MCP_TRANSPORT = "sse"
npm start

The SSE server listens on port 8000 by default and provides /sse, /messages, and /health. Set PORT and HOST to override those defaults.

Set CHESS_API_BASE_URL to override the Chess.com API base URL for development or testing.

Development

Run the test suite and type checker:

npm test
npm run typecheck

Create a coverage report with:

npm run test:coverage

Available tools

• get_player_profile
• get_titled_players
• get_player_stats
• is_player_online
• get_player_current_games
• get_player_games_to_move
• get_player_game_archives
• get_player_games_by_month
• get_player_live_games
• download_player_games_pgn
• get_player_clubs
• get_player_matches
• get_player_tournaments
• get_club_profile
• get_club_members
• get_club_matches
• get_tournament
• get_tournament_round
• get_tournament_round_group
• get_team_match
• get_team_match_board
• get_live_team_match
• get_live_team_match_board
• get_country_profile
• get_country_players
• get_country_clubs
• get_daily_puzzle
• get_random_puzzle
• get_streamers
• get_leaderboards

Available resources

• chess://player/{username}
• chess://player/{username}/stats
• chess://player/{username}/games/current
• chess://player/{username}/games/{year}/{month}
• chess://player/{username}/games/{year}/{month}/pgn
• chess://titled/{title}
• chess://club/{url_id}

License

MIT