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Fengshui Calculator

by fengshuicalculator.com · remote · no sign-in to list tools · v0.1.0 · published by com.fengshuicalculator

Verifiable Chinese calendar & feng shui: BaZi, flying stars, Kua, almanac. SHA-256 replayable.

Changes · 9
CompareRegistry entry

10 tools: 9 change things and 1 only read.

Scanned Oct 22, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http fengshui-calculator https://fengshuicalculator.com/v1/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

10 tools

Changes things 9Claude Code: ask
  • calendarChinese calendar for a date: lunar date (with leap month), zodiac, day officer 建除, yellow/black path, six-day cycle — computed on Beijing timeNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Chinese calendar for a date: lunar date (with leap month), zodiac, day officer 建除, yellow/black path, six-day cycle — computed on Beijing time
  • flying_star_chartXuan Kong flying star natal chart: nine palaces with mountain/facing/period stars plus classical pattern labels (e.g.No findings

    Why it is in this group

    • The name "flying_star_chart" says "star": a word for a change.
    Description, as the server wrote it
    Xuan Kong flying star natal chart: nine palaces with mountain/facing/period stars plus classical pattern labels (e.g. 旺山旺向). Period from a construction date, or explicit yun
  • form_analysisIndoor form-sha from a floor-plan wireframe: 穿堂煞 (door-window alignment), 缺角 (nine-palace missing corners), 厕占中宫 (toilet at centre) — plus optional fusion with the Eight Mansions h…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Indoor form-sha from a floor-plan wireframe: 穿堂煞 (door-window alignment), 缺角 (nine-palace missing corners), 厕占中宫 (toilet at centre) — plus optional fusion with the Eight Mansions house stars and Ming Gua. Grade B verdicts, no aggregate score
  • ganzhiFour pillars (BaZi) for a date+hour, returned under BOTH year conventions (Lichun vs Lunar New Year) × BOTH day boundaries (midnight vs 23:00) — differences are shown, not hiddenNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Four pillars (BaZi) for a date+hour, returned under BOTH year conventions (Lichun vs Lunar New Year) × BOTH day boundaries (midnight vs 23:00) — differences are shown, not hidden
  • kua_numberMing Gua (Kua number) from birth date + gender, with the Lichun year boundary computed astronomically, five-yellow substitution conventions, and eight favourable/unfavourable direc…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Ming Gua (Kua number) from birth date + gender, with the Lichun year boundary computed astronomically, five-yellow substitution conventions, and eight favourable/unfavourable directions
  • replayVerifiability as an API call: recompute a stored request and compare its SHA-256 input digest (JCS-canonicalised) against an expected value — byte-identical reproduction or honest …No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Verifiability as an API call: recompute a stored request and compare its SHA-256 input digest (JCS-canonicalised) against an expected value — byte-identical reproduction or honest mismatch
  • solar_termsAll 24 solar terms of a year with exact Beijing instants (DE441-based), ΔT, and midnight-margin uncertainty flagsNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    All 24 solar terms of a year with exact Beijing instants (DE441-based), ΔT, and midnight-margin uncertainty flags
  • terrain_white_tigerWhite tiger elevation check (白虎抬头) from a DEM-derived 360-bin skyline: compares the right (white tiger) vs left (azure dragon) sector elevation within ±45° of the sitting directionNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    White tiger elevation check (白虎抬头) from a DEM-derived 360-bin skyline: compares the right (white tiger) vs left (azure dragon) sector elevation within ±45° of the sitting direction
  • yun_periodSan Yuan period (三元九运, 1–9) for a date; periods switch at Lichun, anchored 1984 = start of Period 7No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    San Yuan period (三元九运, 1–9) for a date; periods switch at Lichun, anchored 1984 = start of Period 7
Only reads 1Claude Code: allow
  • rulesetsList the rule sets the kernel actually implements, with parameters and honest review_state — nothing not implemented is advertisedNo findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    List the rule sets the kernel actually implements, with parameters and honest review_state — nothing not implemented is advertised

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http fengshui-calculator https://fengshuicalculator.com/v1/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__fengshui-calculator__rulesets"
    ],
    "ask": [
      "mcp__fengshui-calculator__calendar",
      "mcp__fengshui-calculator__ganzhi",
      "mcp__fengshui-calculator__solar_terms",
      "mcp__fengshui-calculator__kua_number",
      "mcp__fengshui-calculator__flying_star_chart",
      "mcp__fengshui-calculator__yun_period",
      "mcp__fengshui-calculator__form_analysis",
      "mcp__fengshui-calculator__terrain_white_tiger",
      "mcp__fengshui-calculator__replay"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as fengshui-calculator. Review it before you use it.