MahjongHandbook — American NMJL, MCR & Riichi Mahjong Scoring Rules Engine for Claude Code

com.mahjonghandbook/mcp

Query American NMJL, Chinese Official MCR (81 Fan) & Japanese Riichi Mahjong scoring rules.

client:Claude Code transport:streamable-http tools:1

Install MahjongHandbook — American NMJL, MCR & Riichi Mahjong Scoring Rules Engine in Claude Code

run in your project directory

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

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs