Verifiable Chinese calendar & feng shui: BaZi, flying stars, Kua, almanac. SHA-256 replayable.
Scored across 11 tools
Each tool targets a distinct fengshui computation (calendar, ganzhi pillars, kua number, flying star chart, yun period, etc.), and descriptions clarify scope. The main potential confusion is between date-oriented tools (calendar vs ganzhi vs yun_period vs solar_terms), but their outputs differ enough that an agent can disambiguate.
All names are consistently snake_case noun phrases (flying_star_chart, kua_number, solar_terms, terrain_white_tiger), which is predictable. They don't follow a verb_noun action pattern, but the convention is uniform throughout, so it's only a minor deviation from the ideal.
Eleven tools is well-scoped for a multi-faceted fengshui calculator, with each tool covering a distinct classical technique or verification utility. No tool appears redundant or padding the surface.
The surface covers major branches: calendar, BaZi, Ming Gua, Xuan Kong, form analysis, terrain, and verifiability (replay/rulesets). Some gaps remain, such as date-selection (择日) workflows or aggregate scoring output, but core lifecycle coverage is solid.
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
Inputs: date.
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
Inputs: sitting (required), yun, date, kind.
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
Inputs: plan (required), gender, birth_year, rotation_deg, +2 more.
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
Inputs: date, hour.
Ming Gua (Kua number) from birth date + gender, with the Lichun year boundary computed astronomically, five-yellow substitution conventions, and eight favourable/unfavourable directions
Inputs: gender (required), date, hour, minute, +1 more.
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
Inputs: request (required), engine_version, expected_input_digest.
List the rule sets the kernel actually implements, with parameters and honest review_state — nothing not implemented is advertised
Inputs: no named parameters.
All 24 solar terms of a year with exact Beijing instants. Model: VSOP87D apparent solar longitude + nutation + aberration + ΔT; root tolerance 1e-7 day (~8.6 ms); verified against an independent JPL DE441-based reconstruction. ΔT and midnight-margin uncertainty flags included.
Inputs: year.
Sun azimuth/elevation for a location and instant (solar compass numeric base): azimuth 0=north clockwise, geometric vs apparent (Sæmundsson refraction) elevation, declination, hour angle, explicit polar day/night state — measurement link only, no direction is inferred from photos
Inputs: lat (required), lon (required), at.
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
Inputs: skyline_360 (required), sitting_azimuth_deg (required).
San Yuan period (三元九运, 1–9) for a date; periods switch at Lichun, anchored 1984 = start of Period 7
Inputs: date.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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