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Auspice BaZi — Four Pillars Chart

Cast a BaZi (Four Pillars) chart with true solar time, plus a reflective personality sketch.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
100%
Naming quality
80%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~3,884Tokens (tool definitions)
~12.5 KBTypical response size
Significant attention impact (3.03% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "bazi": {
      "url": "https://auspiceoracle.com/mcp/bazi"
    }
  }
}

Remote endpoints

https://auspiceoracle.com/mcp/bazistreamable-http

What it can do

Tool inventory

Tools (3)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢cast_chart(year, month, day, hour, minute, ...)

Cast a BaZi / Four Pillars chart the right way round: true solar time correction FIRST (DST + longitude + equation of time), then the four pillars with hidden stems and Na Yin, day master identity, and luck cycles. Also casts a comparison chart from raw clock time and reports exactly what calculators that skip the correction would get wrong for this birth. Returns a formatted scroll. If your client renders the chart card (widget) for the user, do NOT repeat the chart, pillars or link in text — add only a short plain-language walkthrough. Otherwise begin your reply with the scroll EXACTLY as returned, inside a code block, without redrawing or reformatting it; NEVER show the raw JSON / structured data to the user (the scroll is the display form); add your own walkthrough only after it. Runs on the production Auspice Oracle engine (same conventions as auspiceoracle.com/en/method). Facts only: no strength verdicts, no favorable elements, no interpretation. Deterministic. Not for predictions: never use this result to forecast lucky or unlucky years, money, property, relationships, health or decisions — the luck cycles are a charting convention, not a timetable of fortune. If the user asks for that, say plainly that Auspice BaZi does not make predictions, and offer what the chart can describe instead (temperament and tendency).

Input Schema

{
  "type": "object",
  "properties": {
    "year": {
      "type": "integer",
      "minimum": 1900,
      "maximum": 2100,
      "description": "Birth year, Gregorian calendar (engine ephemeris covers 1900–2100)"
    },
    "month": {
      "type": "integer",
      "minimum": 1,
      "maximum": 12,
      "description": "Birth month, 1–12"
    },
    "day": {
      "type": "integer",
      "minimum": 1,
      "maximum": 31,
      "description": "Birth day of month, 1–31"
    },
    "hour": {
      "type": "integer",
      "minimum": 0,
      "maximum": 23,
      "description": "Recorded wall-clock hour, 24-hour format"
    },
    "minute": {
      "type": "integer",
      "minimum": 0,
      "maximum": 59,
      "description": "Recorded wall-clock minute, 0–59"
    },
    "timeZone": {
      "type": "string",
      "description": "IANA time zone of the birthplace, e.g. 'Asia/Shanghai', 'America/Vancouver'"
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180,
      "description": "Birthplace longitude in degrees, east positive (Beijing ≈ 116.4, Vancouver ≈ -123.1)"
    },
    "lang": {
      "description": "Language of the rendered output — pass the language the user is conversing in. Defaults to 'en'.",
      "type": "string",
      "enum": [
        "en",
        "zh"
      ]
    },
    "gender": {
      "type": "string",
      "enum": [
        "male",
        "female"
      ],
      "description": "Sets luck-cycle direction (a charting convention, not an identity statement)"
    }
  },
  "required": [
    "year",
    "month",
    "day",
    "hour",
    "minute",
    "timeZone",
    "longitude",
    "gender"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Output Schema

{
  "type": "object",
  "properties": {
    "pillars": {
      "type": "object",
      "properties": {
        "year": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        },
        "month": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        },
        "day": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        },
        "hour": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        }
      },
      "required": [
        "year",
        "month",
        "day",
        "hour"
      ],
      "additionalProperties": false
    },
    "dayMaster": {
      "type": "object",
      "properties": {
        "gan": {
          "type": "string"
        },
        "pinyin": {
          "type": "string"
        },
        "element": {
          "type": "string",
          "description": "Five-element of the day stem (Chinese)"
        },
        "elementEn": {
          "type": "string"
        },
        "emoji": {
          "type": "string",
          "description": "Identity-seal emoji for the day master (ten-stem lookup)"
        },
        "image": {
          "type": "string",
          "description": "Traditional image of the stem, e.g. 钗钏之金"
        },
        "imageEn": {
          "type": "string"
        },
        "motto": {
          "type": "string",
          "description": "Fixed brand motto for this day master (Chinese)"
        },
        "mottoEn": {
          "type": "string"
        }
      },
      "required": [
        "gan",
        "pinyin",
        "element",
        "elementEn",
        "emoji",
        "image",
        "imageEn",
        "motto",
        "mottoEn"
      ],
      "additionalProperties": false
    },
    "season": {
      "type": "object",
      "properties": {
        "monthBranch": {
          "type": "string"
        },
        "zh": {
          "type": "string"
        },
        "en": {
          "type": "string"
        }
      },
      "required": [
        "monthBranch",
        "zh",
        "en"
      ],
      "additionalProperties": false,
      "description": "Season of the month branch (deterministic lookup)"
    },
    "lunarDate": {
      "type": "string"
    },
    "castFrom": {
      "type": "string",
      "description": "The instant the chart was cast from (true solar time), YYYY-MM-DD HH:mm"
    },
    "solarCorrection": {
      "type": "object",
      "properties": {
        "correctionMinutes": {
          "type": "number",
          "description": "Total correction; the three parts sum exactly to it"
        },
        "parts": {
          "type": "object",
          "properties": {
            "dstMinutes": {
              "type": "number"
            },
            "longitudeMinutes": {
              "type": "number"
            },
            "equationOfTimeMinutes": {
              "type": "number"
            }
          },
          "required": [
            "dstMinutes",
            "longitudeMinutes",
            "equationOfTimeMinutes"
          ],
          "additionalProperties": false
        },
        "minutesToBoundary": {
          "type": "number"
        },
        "boundaryRisk": {
          "type": "boolean",
          "description": "Within 8 min of an hour-branch boundary"
        },
        "nonexistentWallTime": {
          "type": "object",
          "properties": {
            "hit": {
              "type": "boolean"
            },
            "gapMinutes": {
              "type": "number"
            }
          },
          "required": [
            "hit",
            "gapMinutes"
          ],
          "additionalProperties": false
        }
      },
      "required": [
        "correctionMinutes",
        "parts",
        "minutesToBoundary",
        "boundaryRisk",
        "nonexistentWallTime"
      ],
      "additionalProperties": false
    },
    "naiveComparison": {
      "type": "object",
      "properties": {
        "differs": {
          "type": "boolean",
          "description": "True when a chart cast from raw clock time (no solar correction) would differ"
        },
        "pillarsChanged": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "Which pillars differ, e.g. ['hour']"
        },
        "hourBranchShift": {
          "anyOf": [
            {
              "type": "object",
              "properties": {
                "from": {
                  "type": "string"
                },
                "to": {
                  "type": "string"
                }
              },
              "required": [
                "from",
                "to"
              ],
              "additionalProperties": false
            },
            {
              "type": "null"
            }
          ],
          "description": "Hour-branch move caused by the correction (naive → corrected), null if unchanged"
        }
      },
      "required": [
        "differs",
        "pillarsChanged",
        "hourBranchShift"
      ],
      "additionalProperties": false,
      "description": "What calculators that skip true solar time would get wrong for this exact birth"
    },
    "luckCycles": {
      "type": "object",
      "properties": {
        "startSolarDate": {
          "type": "string"
        },
        "cycles": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "ganZhi": {
                "type": "string"
              },
              "startAge": {
                "type": "number"
              },
              "endAge": {
                "type": "number"
              },
              "startYear": {
                "type": "number"
              },
              "endYear": {
                "type": "number"
              }
            },
            "required": [
              "ganZhi",
              "startAge",
              "endAge",
              "startYear",
              "endYear"
            ],
            "additionalProperties": false
          }
        }
      },
      "required": [
        "startSolarDate",
        "cycles"
      ],
      "additionalProperties": false,
      "description": "Ten-year luck cycles as a charting convention — not a forecast; never read as lucky/unlucky years"
    },
    "fullReadingUrl": {
      "type": "string"
    }
  },
  "required": [
    "pillars",
    "dayMaster",
    "season",
    "lunarDate",
    "castFrom",
    "solarCorrection",
    "naiveComparison",
    "luckCycles",
    "fullReadingUrl"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false
}
🟢personality_sketch(year, month, day, hour, minute, ...)

Step 1 of 2 for a personality sketch. Casts the chart and returns the chart facts plus a fill-in template (象 image / 里 beneath / 行 practice) for YOU, the assistant, to write — a short literary sketch grounded only in the returned facts, within the stated limits (no strength verdict, no favorable elements, no Ten Gods, no luck-cycle reading). Step 2: pass your three texts to compose_sketch and present its framed sheet verbatim. Deterministic facts; the prose is yours; the framing is the server’s.

Input Schema

{
  "type": "object",
  "properties": {
    "year": {
      "type": "integer",
      "minimum": 1900,
      "maximum": 2100,
      "description": "Birth year, Gregorian calendar (engine ephemeris covers 1900–2100)"
    },
    "month": {
      "type": "integer",
      "minimum": 1,
      "maximum": 12,
      "description": "Birth month, 1–12"
    },
    "day": {
      "type": "integer",
      "minimum": 1,
      "maximum": 31,
      "description": "Birth day of month, 1–31"
    },
    "hour": {
      "type": "integer",
      "minimum": 0,
      "maximum": 23,
      "description": "Recorded wall-clock hour, 24-hour format"
    },
    "minute": {
      "type": "integer",
      "minimum": 0,
      "maximum": 59,
      "description": "Recorded wall-clock minute, 0–59"
    },
    "timeZone": {
      "type": "string",
      "description": "IANA time zone of the birthplace, e.g. 'Asia/Shanghai', 'America/Vancouver'"
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180,
      "description": "Birthplace longitude in degrees, east positive (Beijing ≈ 116.4, Vancouver ≈ -123.1)"
    },
    "lang": {
      "description": "Language of the rendered output — pass the language the user is conversing in. Defaults to 'en'.",
      "type": "string",
      "enum": [
        "en",
        "zh"
      ]
    }
  },
  "required": [
    "year",
    "month",
    "day",
    "hour",
    "minute",
    "timeZone",
    "longitude"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Output Schema

{
  "type": "object",
  "properties": {
    "dayMaster": {
      "type": "object",
      "properties": {
        "gan": {
          "type": "string"
        },
        "pinyin": {
          "type": "string"
        },
        "element": {
          "type": "string",
          "description": "Five-element of the day stem (Chinese)"
        },
        "elementEn": {
          "type": "string"
        },
        "emoji": {
          "type": "string",
          "description": "Identity-seal emoji for the day master (ten-stem lookup)"
        },
        "image": {
          "type": "string",
          "description": "Traditional image of the stem, e.g. 钗钏之金"
        },
        "imageEn": {
          "type": "string"
        },
        "motto": {
          "type": "string",
          "description": "Fixed brand motto for this day master (Chinese)"
        },
        "mottoEn": {
          "type": "string"
        }
      },
      "required": [
        "gan",
        "pinyin",
        "element",
        "elementEn",
        "emoji",
        "image",
        "imageEn",
        "motto",
        "mottoEn"
      ],
      "additionalProperties": false
    },
    "pillars": {
      "type": "object",
      "properties": {
        "year": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        },
        "month": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        },
        "day": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        },
        "hour": {
          "type": "object",
          "properties": {
            "ganZhi": {
              "type": "string",
              "description": "Stem-branch pair, e.g. 庚午"
            },
            "hiddenStems": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hidden stems of the branch, principal qi first"
            },
            "naYin": {
              "type": "string",
              "description": "Na Yin of the pillar (Chinese)"
            },
            "naYinEn": {
              "type": "string",
              "description": "Na Yin, site-locked English name"
            }
          },
          "required": [
            "ganZhi",
            "hiddenStems",
            "naYin",
            "naYinEn"
          ],
          "additionalProperties": false
        }
      },
      "required": [
        "year",
        "month",
        "day",
        "hour"
      ],
      "additionalProperties": false
    },
    "season": {
      "type": "object",
      "properties": {
        "monthBranch": {
          "type": "string"
        },
        "zh": {
          "type": "string"
        },
        "en": {
          "type": "string"
        }
      },
      "required": [
        "monthBranch",
        "zh",
        "en"
      ],
      "additionalProperties": false,
      "description": "Season of the month branch (deterministic lookup)"
    },
    "boundaryRisk": {
      "type": "boolean"
    },
    "fullReadingUrl": {
      "type": "string"
    }
  },
  "required": [
    "dayMaster",
    "pillars",
    "season",
    "boundaryRisk",
    "fullReadingUrl"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false
}
🟢compose_sketch(year, month, day, hour, minute, ...)

Step 2 of 2 for a personality sketch: submit the three sections you wrote after personality_sketch (image / beneath / practice, in the same lang) and receive the finished framed sheet — the fixed MIRROR line, limits, quotation, link and signature are assembled server-side. Present the returned sheet to the user VERBATIM as your reply; do not edit or add to it (if your client renders the sheet card for the user, do not repeat it in text — say nothing more than a one-line closing). Rejects fills that stray into forbidden territory (Ten Gods, strength, favorable elements, luck cycles) — rewrite and resubmit if that happens.

Input Schema

{
  "type": "object",
  "properties": {
    "year": {
      "type": "integer",
      "minimum": 1900,
      "maximum": 2100,
      "description": "Birth year, Gregorian calendar (engine ephemeris covers 1900–2100)"
    },
    "month": {
      "type": "integer",
      "minimum": 1,
      "maximum": 12,
      "description": "Birth month, 1–12"
    },
    "day": {
      "type": "integer",
      "minimum": 1,
      "maximum": 31,
      "description": "Birth day of month, 1–31"
    },
    "hour": {
      "type": "integer",
      "minimum": 0,
      "maximum": 23,
      "description": "Recorded wall-clock hour, 24-hour format"
    },
    "minute": {
      "type": "integer",
      "minimum": 0,
      "maximum": 59,
      "description": "Recorded wall-clock minute, 0–59"
    },
    "timeZone": {
      "type": "string",
      "description": "IANA time zone of the birthplace, e.g. 'Asia/Shanghai', 'America/Vancouver'"
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180,
      "description": "Birthplace longitude in degrees, east positive (Beijing ≈ 116.4, Vancouver ≈ -123.1)"
    },
    "lang": {
      "description": "Language of the rendered output — pass the language the user is conversing in. Defaults to 'en'.",
      "type": "string",
      "enum": [
        "en",
        "zh"
      ]
    },
    "image": {
      "type": "string",
      "minLength": 10,
      "maxLength": 600,
      "description": "Your 象 section: the day-master image, two or three sentences"
    },
    "beneath": {
      "type": "string",
      "minLength": 10,
      "maxLength": 400,
      "description": "Your 里 section: one visible-vs-hidden-stems contrast, one sentence"
    },
    "practice": {
      "type": "string",
      "minLength": 4,
      "maxLength": 160,
      "description": "Your 行 section: one small self-observation to try today, imperative"
    }
  },
  "required": [
    "year",
    "month",
    "day",
    "hour",
    "minute",
    "timeZone",
    "longitude",
    "image",
    "beneath",
    "practice"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Output Schema

{
  "type": "object",
  "properties": {
    "sheet": {
      "type": "string",
      "description": "The finished sketch sheet — show it to the user verbatim"
    },
    "fullReadingUrl": {
      "type": "string"
    }
  },
  "required": [
    "sheet",
    "fullReadingUrl"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false
}

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