bazi

A Chinese Four Pillars birth-chart workflow, a traditional fortune-telling method based on birth date, time, and gender. It produces the four pillars, related chart terms, life periods, and a plain-language summary.

In plain words
What is it for?
It helps answer requests about 八字, also called Four Pillars or birth-chart readings. Jobs include calculating the chart, life periods, element balance, and general points to consider.
Why use it?
It guides the agent to collect the details needed for a chart and explain traditional terms in everyday language. It also notes when an imprecise birth time may affect the result.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/mxm-sys/opencode-tianji/bazi
Any agent
npx skills add Mxm-sys/opencode-tianji --skill bazi
Clone the repo
git clone --depth 1 https://github.com/Mxm-sys/opencode-tianji

Made for: Claude Code, Codex.

Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 449 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00070 $0.00449
Opus 5 $0.00035 $0.00225
Sonnet 5 $0.00014 $0.00090
Haiku 4.5 $0.00007 $0.00045

Measured 2d ago against content hash 656b5d3eb307, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bazi scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

templates/skills/bazi/SKILL.md · 33 lines

What it actually says

八字四柱排盘(轻量流程)

第 0 步:须知

需相对精确的出生时间(年月日+时辰);时辰不准会影响排盘,向用户说明。

第 1 步:收集必要信息(question 工具)

  • 出生时间(必问):公历或农历年月日时,越精确越好;只到日则时柱按午时缺省。
  • 性别(必问):男/女,决定大运顺逆。
  • 出生地(可选):省/市,用于换算经度定时辰;不提供按东八区(经度 120)。

第 2 步:调用工具

调用 bazi,传入:datetime、性别、经度(可选)。

第 3 步:输出规范

  • 【四柱】年月日时四柱干支,点明日主(代表命主自己)。
  • 【命盘】十神/地支藏干/纳音/五行统计与大运,每条术语(十神/纳音/日主/大运)紧跟白话翻译。
  • 【总结】纯白话说明五行强弱、最需注意的方面与建议。
  • 注明"仅供参考,现实决策请结合实际情况"。

参考资料

  • 排盘工具:opencode-tianji 插件提供 bazi 工具(十神/藏干/纳音/大运据包内 data/bazi.json、data/ganzhi.json)
  • 干支算法:包内 lib/ganzhi.ts(真太阳时/干支推算)
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 33 lines · 70 tokens per session scan A 656b5d3eb307

Subscribe to this mod's changes

bazi is a skill published in the GitHub repository Mxm-sys/opencode-tianji (0 stars, last pushed 25d ago), licensed MIT. It adds 70 tokens to every session and 449 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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