trpg-dice-mcp

trpg-dice-mcp

A cryptographically secure dice rolling server for TRPGs, supporting complex dice expressions, multiple rule system presets, and hidden rolls with encryption.

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README

TRPG 掷骰 MCP Server v2.0

密码学安全真随机的 TRPG 掷骰服务器，支持完整骰子表达式引擎、多系统规则预设、暗骰保密。

快速开始

配置 MCP 客户端

在你的 MCP 客户端配置中添加：

{
  "mcpServers": {
    "trpg-dice": {
      "command": "npx",
      "args": ["-y", "trpg-dice-mcp"]
    }
  }
}

Windows 客户端

部分 Windows 环境需要：

{
  "mcpServers": {
    "trpg-dice": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "trpg-dice-mcp"]
    }
  }
}

工具一览

工具 用途 示例
roll_dice 掷骰表达式求值 3d6+2, 4d6kh3, d%, (8d6)/2
roll_table 随机表抽取（范围/权重/等概率） 遭遇表、战利品表
roll_check 技能/属性检定 CoC 7e、D&D 5e、PbtA、GURPS
roll_pool 骰池检定 Shadowrun、WoD、Year Zero
roll_fate FATE 检定 4dF + 修正值
pick_random 随机抽取 先攻排序、抽牌
get_roll_history 查询历史 最近掷骰记录
reveal_hidden_roll 揭示暗骰 追溯查看之前暗骰的完整结果
opposed_check 双方对抗检定 技能对抗、先攻对抗

支持的骰子表达式

基本语法

表达式 含义
3d6 掷 3 颗 6 面骰
1d20+5 d20 + 修正 5
4d6kh3 4d6 取最高的 3 个（D&D 属性）
2d20kl1 2d20 取最低的 1 个（劣势）
3d6! 爆炸骰（出 6 追加一骰）
1d6r2 重骰直到结果 > 2
(8d6)/2 8d6 结果除以 2（向下取整）
floor(3d6/2) 同上，显式 floor

特殊骰

记号 含义
d% / d100 百分骰（1–100）
dF Fudge 骰（-1/0/+1）
d66 查表骰（11–66，36 个离散值）

修饰符

修饰符 含义
khN 保留最高的 N 个
klN 保留最低的 N 个
dhN 丢弃最高的 N 个
dlN 丢弃最低的 N 个
! 爆炸（出最大值追加一骰）
!! 复合爆炸（累计为单骰值）
!>N 阈值爆炸（出 ≥N 追加）
rN 递归重骰直到结果 > N

规则预设

预设 系统 骰子 判定
coc7 克苏鲁的呼唤 7 版 1d100 ≤ 技能
dnd5e D&D 5 版 1d20+mod ≥ DC
pbta Powered by the Apocalypse 2d6+mod 固定阈值
gurps GURPS 3d6 ≤ 技能
runequest RuneQuest 1d100 ≤ 技能
fate FATE 4dF+mod vs 难度

模型可通过 rules://presets/{name} 资源查阅详细判定规则。

安全性

  • 随机源：使用 node:crypto.randomInt()，密码学安全，无模偏差
  • 暗骰：hidden: true 参数使结果不进入 LLM 上下文，仅写入本地加密存储
  • 揭示控制：暗骰揭示默认启用，GM 可通过 reveal_hidden_roll 工具回溯查看暗骰结果

开发

npm install
npm run build
npm test

项目结构

src/
├── index.ts          # stdio 入口
├── server.ts         # MCP 工具注册
├── rng/              # 随机数核心（SecureRng / SeededRng）
├── dice/             # 表达式引擎（tokenizer/parser/eval/range/table）
├── rules/            # 规则预设 + degrees DSL
├── resources/        # MCP Resources（规则速查）
├── state/            # 历史记录 + 暗骰存储
├── tools/            # 9 个 MCP 工具
└── utils/            # 格式化 / i18n

许可

MIT

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