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mcp-biorhythm

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mcp-biorhythm

생년월일을 받아 바이오리듬 수치 + 사인파 차트(PNG) 를 반환하는 MCP 서버. "내 바이오리듬 보여줘"라고 하면 신체·감성·지성 세 곡선 그래프 이미지를 돌려준다.

구조·네이밍·PNG·설치 규약은 STANDARD.md를 따른다. mcp-qr skeleton 복제본.

계산 (결정론적)

고전 3주기 · 값 = sin(2π × d / period) (d = 출생일로부터 경과 일수):

사이클

주기

신체 (Physical)

23일

감성 (Emotional)

28일

지성 (Intellectual)

33일

  • 출력은 백분율(−100% ~ +100%).

  • 임계일(critical day): 곡선이 0을 교차(부호가 바뀌는)하는 불안정일. 구간 내 목록으로 표시.

  • 날짜는 UTC 자정 기준으로 계산 → 타임존에 따른 ±1일 오차 없음.

Related MCP server: Kerykeion MCP Server

도구

get_biorhythm

파라미터

타입

필수

기본

설명

birthDate

string YYYY-MM-DD

✅

—

생년월일

targetDate

string YYYY-MM-DD

오늘(UTC)

기준일

rangeDays

number

15

기준일 전후 표시 일수 (1–90)

출력 (둘 다 반환):

  1. 구조화 텍스트 — 기준일의 신체/감성/지성 백분율 + 상승/하강 + 구간 내 임계일 목록

  2. PNG 차트 — [targetDate − rangeDays, targetDate + rangeDays] 구간의 세 곡선 (1080×620)

예제 출력: examples/biorhythm_example.png (1990-05-15 출생 · 2026-06-19 기준, 기본 옵션).

설치

git clone https://github.com/molpass/mcp-biorhythm.git
cd mcp-biorhythm
npm install && npm run build

예제 차트를 직접 생성해 보려면:

npm run example   # examples/biorhythm_example.png 재생성

폰트: 한글 라벨(신체/감성/지성)을 위해 한글 가능 폰트가 필요하다. Windows는 Malgun Gothic이 기본 탑재라 추가 설치 불필요. Linux는 Nanum/Noto CJK 설치 권장.

MCP 등록 (서버명 biorhythm)

{
  "mcpServers": {
    "biorhythm": {
      "command": "node",
      "args": ["/abs/path/mcp-biorhythm/dist/index.js"]
    }
  }
}

/abs/path는 클론한 실제 절대경로로 바꾼다. Windows 예: "args": ["C:/Users/<you>/mcp-biorhythm/dist/index.js"]

스택

스킬

페어링 스킬: skill/biorhythm.skill.md.

About / 제작

Hermes Agent용 MCP — molpass의 바이브 코딩(vibe coding) 프로젝트.

  • 아이디어·방향: molpass (이정훈) · https://zeolinex.com

  • 기획: Claude (Chat)

  • 개발: Claude Code

자가 호스팅 Hermes Agent에 도구로 붙여 쓰는 MCP 서버입니다.

같은 모음:

License

MIT

Available Tools

1 tool
get_biorhythmGet BiorhythmA

생년월일을 받아 신체(23)·감성(28)·지성(33) 바이오리듬 수치와 사인파 차트 PNG를 반환한다. 날짜 계산은 UTC 자정 기준(타임존 비의존).

ParametersJSON Schema
NameRequiredDescriptionDefault
birthDateYes생년월일 (YYYY-MM-DD)
targetDateNo기준일 (YYYY-MM-DD). 생략 시 오늘(UTC).
rangeDaysNo기준일 전후 표시 일수

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, description carries full burden. It discloses that date calculation is UTC midnight (timezone independent), which is a key behavioral detail. However, it does not mention return format specifics, error conditions, or authentication needs.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences with no redundant information. First sentence defines purpose and output, second clarifies a critical behavioral detail. Every word is functional.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema, the description could specify how values and chart are returned (e.g., JSON with base64 PNG). However, for a straightforward biorhythm tool, the description is largely complete. Missing output format details slightly reduce completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema provides 100% coverage with descriptions for all three parameters. Description adds value by specifying the cycle periods (23,28,33), which are not in the schema. This enhances understanding beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool receives a birthdate and returns biorhythm values for physical (23), emotional (28), and intellectual (33) cycles along with a sine wave chart PNG. It specifies the exact resource and action, distinguishing it from any potential siblings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Description implicitly conveys usage (computing biorhythms) and includes constraints like date calculation at UTC midnight. No explicit when-not-to-use or alternatives, but no sibling tools exist to differentiate from.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. 1 tool updatev1.0.0
    • First observedget_biorhythm
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TDQS

A4.2/5.0
Disambiguation5/5

Only one tool exists, so there's no risk of confusion between tools. The tool's purpose is clearly defined.

Naming Consistency5/5

With a single tool, naming consistency is not an issue. The name 'get_biorhythm' is clear and follows a common verb_noun pattern.

Tool Count3/5

One tool for a niche domain like biorhythm calculation is acceptable but minimal. A broader server might benefit from additional tools (e.g., for specific cycle queries or date ranges).

Completeness2/5

The tool provides biorhythm values and a chart, but lacks support for date ranges or retrieving only numerical data without the chart, which limits its completeness for typical use cases.

Maintenance

ActivityStale
ResponsivenessNo issues

Resources

Unclaimed servers have limited discoverability.

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Related MCP Connectors

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  • Kerykeion MCP Server

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    Enables astrological chart generation including natal charts, synastry, transits, composite charts, and planetary returns using the Kerykeion library. Supports multiple output formats (text, SVG, PNG) and customizable themes, house systems, and languages.
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  • mcp-astrology

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