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Free BaZi, I Ching, tarot, Zi Wei and bilingual learning tools with transparent methods. No API key.

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calculate_bazi Read-only

Calculate four pillars. Unknown time returns no hour pillar. Gregorian date, IANA timezone, explicit day boundary. No prediction.

datestring, required

timestring

localestring

timezonestring

Birthplace IANA zone or explicit offset. If omitted, Asia/Shanghai is assumed and disclosed.

longitudenumber

solarTimeboolean

dayBoundarystring

Tools (7)

Tool list last changed Oct 25, 2026.

calculate_bazi

Calculate four pillars. Unknown time returns no hour pillar. Gregorian date, IANA timezone, explicit day boundary. No prediction.

read-only

Argument	Type	Description
date*	string
time	any
locale	string
timezone	string	Birthplace IANA zone or explicit offset. If omitted, Asia/Shanghai is assumed and disclosed.
longitude	number
solarTime	boolean
dayBoundary	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "date"
  ],
  "properties": {
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
    },
    "time": {
      "anyOf": [
        {
          "type": "string",
          "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    },
    "timezone": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1,
      "description": "Birthplace IANA zone or explicit offset. If omitted, Asia/Shanghai is assumed and disclosed."
    },
    "longitude": {
      "type": "number",
      "maximum": 180,
      "minimum": -180
    },
    "solarTime": {
      "type": "boolean",
      "default": false
    },
    "dayBoundary": {
      "enum": [
        "midnight",
        "zi"
      ],
      "type": "string",
      "default": "midnight"
    }
  }
}

calculate_ziwei

Calculate Zi Wei Dou Shu twelve palaces from an entered local civil date and known time. iztro default school, no solar-time correction. Sex is a traditional calculation parameter.

read-only

Argument	Type	Description
sex*	string
date*	string
time*	string
locale	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "date",
    "time",
    "sex"
  ],
  "properties": {
    "sex": {
      "enum": [
        "male",
        "female"
      ],
      "type": "string"
    },
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
    },
    "time": {
      "type": "string",
      "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$"
    },
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    }
  }
}

cast_iching

Cast six three-coin lines or supply your own. Lines are ordered bottom to top, values 6/7/8/9. Returns original and changed King Wen hexagrams.

read-only

Argument	Type	Description
lines	array
locale	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "lines": {
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "number",
            "const": 6
          },
          {
            "type": "number",
            "const": 7
          },
          {
            "type": "number",
            "const": 8
          },
          {
            "type": "number",
            "const": 9
          }
        ]
      },
      "maxItems": 6,
      "minItems": 6
    },
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    }
  }
}

draw_tarot

Draw one or three cards from a full 78-card deck without replacement. Reversals optional. Symbolic reflection only.

read-only

Argument	Type	Description
count	any
locale	string
reversals	boolean

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "count": {
      "anyOf": [
        {
          "type": "number",
          "const": 1
        },
        {
          "type": "number",
          "const": 3
        }
      ],
      "default": 3
    },
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    },
    "reversals": {
      "type": "boolean",
      "default": true
    }
  }
}

get_daily_card

Get a public daily reflection card and practice using the server calendar in an IANA timezone. No model, account, personal history or quota turn. Can differ from a personal browser/account card. Keep the returned result for follow-up.

read-only

Argument	Type	Description
locale	string
timezone	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    },
    "timezone": {
      "type": "string",
      "default": "UTC"
    }
  }
}

read_library

Read a complete Wenbu guide or symbol by search_library ID. Handbook guides return Markdown, outline and export links without truncation. Optionally provide a section ID from the outline; the returned scope makes partial reads explicit. External reference entries are metadata only; use your host browsing capability to verify them.

read-only

Argument	Type	Description
id*	string
locale	string
section	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1
    },
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    },
    "section": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    }
  }
}

search_library

Search Wenbu original guides, symbols and curated reference metadata. This is a bounded catalogue, not a web search. Search snippets do not mean the source was read.

read-only

Argument	Type	Description
limit	integer
query*	string
locale	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 6,
      "maximum": 8,
      "minimum": 1
    },
    "query": {
      "type": "string",
      "maxLength": 160,
      "minLength": 1
    },
    "locale": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "default": "en"
    }
  }
}