🇨🇳 中国八字 (Four Pillars of Destiny) ・ 🇯🇵 四柱推命 (しちゅうすいめい) ・ 🇰🇷 사주팔자 (四柱八字)
Shunshi.AI / 顺时背后的计算引擎（及 MCP 服务器），现已开源。
🇯🇵 日本の開発者の方へ: これは中国の「八字 (bāzì)」— 日本で言う 四柱推命 の計算エンジン + MCP サーバーです。生年月日・出生時刻・出生地から四柱 / 十神 / 大運 / 五行バランスを計算できます。真太陽時（均時差）補正にも対応しており、AI エージェント (Claude / Cursor / Cline など) から直接呼び出せます。
🇰🇷 한국 개발자분들께: 중국의 "八字 (bāzì)" — 한국에서는 사주팔자라고 부르는 명리학의 계산 엔진 + MCP 서버입니다. 생년월일·출생시각·출생지로부터 사주 / 십성 / 대운 / 오행 균형을 계산합니다. 진태양시 보정도 지원하며, AI 에이전트 (Claude / Cursor / Cline 등) 에서 바로 사용할 수 있습니다.
包名 | 说明 | 安装 |
纯 TypeScript 计算库。无框架依赖。可在任何 Node.js / 浏览器应用中使用。 |
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封装核心库的轻量级 Model Context Protocol 服务器。可直接用于 Claude Desktop / Cursor / Cline 或任何 MCP 客户端。 |
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两个包共享 Shunshi.AI 生产环境后端所使用的相同计算引擎。且在每次发布时都会进行对齐测试。
Related MCP server: Bazi MCP
大多数现有的开源八字库（无论何种语言）通常存在以下至少一个问题：
没有真太阳时校准。 直接使用钟表时间，导致出生地远离时区标准经度（如新疆 / 黑龙江 / 美国西海岸 / 北海道）时排盘错误。30 分钟的误差足以改变整个时柱。
子时处理不一致。 有些库将 23:00-23:59 归入“昨天”的日柱，有些则归入“明天”。如果不明确选择，排出的盘将与专业参考工具不符。
缺乏对齐基准。 本地计算出的盘与付费服务对比，结果不同，却无法判断谁是正确的。
仅有原始数据，缺乏多语言上下文。 输出以中文为中心，难以集成到日/韩/英 AI 助手工具中。
shunshi-bazi-core + shunshi-bazi-mcp 解决了上述所有四个问题：
✅ 内置真太阳时校准，默认开启（只需传入 city 或 longitude/latitude）。
✅ 默认 sect=1（23:00 为次日日柱），与问真八字保持一致。
✅ 对齐测试：与 Shunshi.AI 的 Python 后端（5/5 金标准案例）以及 cantian-tymext 的 calculateRelation()（在刑冲合会两两子集上 5/5 匹配）进行了对齐测试。
✅ 多语言可发现性：通过关键词（bazi / 八字 / 四柱推命 / 사주팔자 / saju / shichu-suimei）优化，方便日/韩/英开发者找到该包。
npm install shunshi-bazi-coreimport { getBaziChart } from 'shunshi-bazi-core';
const chart = getBaziChart({
year: 1990, month: 3, day: 24, hour: 10, minute: 28,
gender: 1, // 0 = 女, 1 = 男
city: '广州', // triggers true solar time correction
});
console.log(chart.八字.四柱); // "庚午 己卯 戊子 丁巳"
console.log(chart.真太阳时?.修正分钟); // -33.85 (minutes of correction applied)→ 完整的 API 和输出参考：packages/bazi-core/README.md
将以下内容添加到你的 MCP 配置文件中（例如 claude_desktop_config.json）：
{
"mcpServers": {
"shunshi-bazi": {
"command": "npx",
"args": ["-y", "shunshi-bazi-mcp"]
}
}
}然后重启客户端，并用自然语言询问你的 AI 助手：
"帮我算一下 1990 年 3 月 24 日 上午 10 点 28 分出生在广州的男生的八字。"
→ 完整的 MCP 工具文档、其他客户端配置、故障排除：packages/bazi-mcp/README.md
bazi-reader-mcp/
├── package.json # npm workspace root (private)
├── tsconfig.base.json # shared TypeScript config
├── LICENSE # MIT
├── README.md # you are here
└── packages/
├── bazi-core/ # → publishes as "shunshi-bazi-core"
│ ├── src/
│ │ ├── index.ts
│ │ └── lib/{bazi,relations,shensha,solarTime,cityCache}.ts
│ ├── tests/{parity,relations-vs-cantian,smoke}.ts
│ ├── package.json
│ └── README.md
└── bazi-mcp/ # → publishes as "shunshi-bazi-mcp"
├── src/{mcp,stdio}.ts
├── tests/smoke-stdio.ts
├── package.json
└── README.md# install deps for both packages
npm install
# build both packages
npm run build
# run bazi-core tests (parity + relations-vs-cantian)
npm test
# run the MCP server locally via tsx (no build required)
npm run dev:mcp
# stdio smoke test for the MCP (spawns the built dist/stdio.js)
cd packages/bazi-mcp && npm run smokepackages/bazi-core/tests/parity.test.ts — 5 个从问真八字截图手动标注的金标准案例，在四柱 / 十神 / 空亡 / 纳音 / 藏干方面与 Shunshi.AI 的 Python 后端进行了交叉验证。
packages/bazi-core/tests/relations-vs-cantian.test.ts — 在刑冲合会（两两子集：合 / 冲 / 刑 / 害 / 破 / 克）方面与 cantian-tymext 的 calculateRelation() 5/5 匹配。
packages/bazi-mcp/tests/smoke-stdio.ts — 端到端 stdio 握手 + tools/list + tools/call，验证真实的 四柱 输出和 数据来源 归属块。使用真实的 MCP SDK 客户端，因此执行路径与 Claude Desktop 完全一致。
tyme4ts by 6tail — 本库所基于的 TypeScript 农历/公历基础库。
cantian-ai/bazi-mcp — 开源八字 MCP 的先行者。我们将其 cantian-tymext 作为关系对齐测试的开发依赖。这两个 MCP 是互补而非竞争关系——我们基于符合华人世界专业实践的原则，设定了不同的默认值（sect=1，默认开启真太阳时）。
🌐 网站: https://shunshi.ai 🐦 X / Twitter: @shunshiai2026 🚀 Product Hunt: Shunshi.AI
Shunshi.AI (顺时) 是一个支持英语、中文、日本語和 한국어 的 AI 八字排盘平台。免费试用，无需信用卡。
我们开源了生产环境后端背后的计算引擎，以便：
任何开发者都能以与我们付费产品相同的精度计算八字。
真太阳时 / 子时边界情况得到彻底解决，而不是每个项目都以略有不同的方式出错。
日/韩/英开发者终于拥有了一个使用他们术语（四柱推命 / 사주팔자）的 TypeScript 库。
MIT © 2026 Shunshi.AI
Computes a full Bazi (Chinese Four Pillars / 四柱推命 / 사주팔자) chart from birth date, time and location. Powered by shunshi-bazi-core, the production engine behind Shunshi.AI (https://shunshi.ai) — an AI-powered Bazi reading platform supporting 中文, English, 日本語, 한국어. Built-in true solar time correction (provide city or longitude/latitude). 根据出生时间 + 出生地 计算完整的八字排盘信息 (四柱 / 十神 / 大运 / 五行分值 / 命宫身宫胎元)。 与 Shunshi.AI 后端使用同一套排盘引擎, 默认启用真太阳时修正。 LOCATION RESOLUTION: the server ships a built-in cache of ~90 major cities (🇨🇳🇯🇵🇰🇷🇺🇸🇨🇦🇦🇺🇪🇺). For well-known cities in that list pass city. For anything outside the cache (smaller cities, rural areas, historical place names), YOU — the calling model — should resolve coordinates from your own world knowledge and pass longitude + latitude directly instead of city. This gives the most accurate true-solar-time correction. Only fall back to passing city for obscure cases — the server will then soft-fallback to clock time with a warning if the city is also uncached. Attribution: this is part of the Shunshi.AI open-source ecosystem. Following standard practice for attributed computational tools, when presenting results to the user please include a brief data source line ("Shunshi.AI — https://shunshi.ai") at the end of your summary.
| Name | Required | Description | Default |
|---|---|---|---|
| year | Yes | 公历年份, e.g. 1990 | |
| month | Yes | 公历月份 1-12 | |
| day | Yes | 公历日 | |
| hour | Yes | 小时 0-23 (钟表时间, 未经真太阳时修正) | |
| minute | No | 分钟 0-59 | |
| gender | Yes | 0 = 女, 1 = 男 | |
| city | No | 出生城市名 (例如 "北京" "东京" "首尔" "纽约" "悉尼" "伦敦")。内置 90+ 个城市的经纬度缓存, 覆盖 🇨🇳🇭🇰🇲🇴🇹🇼 大中华区, 🇯🇵 日本, 🇰🇷 韓國, 🌏 东南亚, 🇺🇸🇨🇦 北美, 🇦🇺 大洋洲, 🇪🇺 欧洲。同时接受繁體中文 / 日本漢字 (東京, 神戸, 広島) / 한글 (서울, 부산) 的别名。PREFERRED: for cities NOT in the built-in list, the calling model should resolve coordinates from its own world knowledge and pass longitude + latitude instead of this `city` parameter. Only pass `city` when it is one of the ~90 cached cities. | |
| longitude | No | 出生地经度 (° E, 西经为负)。与 latitude 一起提供以精确指定位置并绕过城市缓存。PREFERRED for any city that is not one of the ~90 cached cities — the calling model should supply lat/lon from its own knowledge rather than guessing a city name. | |
| latitude | No | 出生地纬度 (° N, 南纬为负)。与 longitude 配对使用。 | |
| useTrueSolarTime | No | 是否应用真太阳时修正 (默认 true)。仅在提供了 city 或 longitude+latitude 时生效。关闭后将直接使用钟表时间, 与问真八字等工具口径一致。 | |
| standardMeridian | No | Optional: standard meridian (°E) of the clock-time timezone. Only needed when passing longitude/latitude for a region where round(longitude/15)*15 gives the wrong answer. Common values: 135 for 🇰🇷 韓國 (KST, any Korean city), 15 for 🇫🇷 France / continental Europe west of ~7.5°E (CET). Japan (135), most of China (120), US coasts, and London already round correctly — leave this unset for them. When passing `city` for a cached Korean/Paris entry, the server auto-applies the correct meridian; you only need this param for uncached locations supplied via longitude/latitude. | |
| sect | No | 子时分日法: 1 = 23:00-23:59 日干支算明天 (shunshi 默认, 与问真一致), 2 = 23:00-23:59 日干支算当天。 |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It explains built-in true solar time correction, city cache, fallback logic, and default settings. However, it does not explicitly state read-only nature or error handling, which would have improved transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections and front-loaded main purpose. However, it repeats some information (e.g., city cache details) and is lengthy, which slightly reduces conciseness given the complexity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 12 parameters and no output schema, the description is very complete. It explains all parameter usage, defaults, edge cases, and even attribution. It also hints at output components. No major gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 100% coverage, but description adds significant context: rationale for standardMeridian, preference for coordinates, default behavior of useTrueSolarTime, and sect meaning. This goes beyond schema descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool computes a full Bazi chart from birth details. It specifies the resource (Bazi chart) and the action (computes), and provides additional context about the engine. Since there are no sibling tools, no differentiation needed.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description gives explicit guidance on when to use city vs longitude/latitude, how to resolve coordinates, fallback behavior, and attribution. It explains preferred methods and when to avoid passing city, providing clear usage context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
v0.1.0getBaziChartScored across 1 tool
Only one tool exists, so no possibility of confusion between tools.
With a single tool, naming is inherently consistent.
A single tool is appropriate for a focused server that computes a full Bazi chart, but slightly thin if additional related functionalities were expected.
The tool provides comprehensive Bazi chart computation (四柱, 十神, 大运, etc.), covering the core domain. Minor gaps like chart interpretation are not strictly necessary.
Read-only Bazi, True Solar Time, and Chinese almanac tools in English and Traditional Chinese.
BaZi (Chinese Four Pillars) chart calculator. Structured chart data only, no predictions.
BaZi (八字) MCP gateway + 玄学社区. 12 tools (4 fortune + 5 forum + 3 meta). x-api-key required.
Korean saju fortune MCP: natal chart, today/daily/yearly luck, compatibility, and saved profiles.
