Lunonis Astrology

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Birth charts, synastry and birth-place search from an ephemeris. Free, read-only, nothing stored.

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Compare two people's charts (synastry) from their birth data. Returns the overall tone (flowing, mixed or charged), whether the Sun elements match, the classic pairings (Venus-Mars, Sun-Moon, Moon-Moon, Venus-Venus), the tightest Moon, Venus, Mars and Sun contacts between the two charts, and a link to the free full comparison on lunonis.com. Counted aspects only: there is no compatibility score. Nothing is stored.

personAobject, required

First person

personBobject, required

Second person

Tools (3)

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read-only

Argument	Type	Description
personA*	object	First person
personB*	object	Second person

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "personA",
    "personB"
  ],
  "properties": {
    "personA": {
      "type": "object",
      "required": [
        "date",
        "place"
      ],
      "properties": {
        "date": {
          "type": "string",
          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
          "description": "Birth date, YYYY-MM-DD (1900-2100)"
        },
        "time": {
          "type": "string",
          "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
          "description": "Birth time, 24-hour HH:MM local time. Omit if unknown: the rising sign and houses are then left out, never guessed."
        },
        "place": {
          "type": "string",
          "maxLength": 80,
          "minLength": 1,
          "description": "Birth city name (e.g. \"Lviv\" or \"Lviv, Ukraine\"), or a place id from search_places. A name shared by several cities returns candidates to choose from."
        }
      },
      "description": "First person"
    },
    "personB": {
      "type": "object",
      "required": [
        "date",
        "place"
      ],
      "properties": {
        "date": {
          "type": "string",
          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
          "description": "Birth date, YYYY-MM-DD (1900-2100)"
        },
        "time": {
          "type": "string",
          "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
          "description": "Birth time, 24-hour HH:MM local time. Omit if unknown: the rising sign and houses are then left out, never guessed."
        },
        "place": {
          "type": "string",
          "maxLength": 80,
          "minLength": 1,
          "description": "Birth city name (e.g. \"Lviv\" or \"Lviv, Ukraine\"), or a place id from search_places. A name shared by several cities returns candidates to choose from."
        }
      },
      "description": "Second person"
    }
  }
}

natal_chart

Calculate a real natal (birth) chart from a birth date, optional birth time and a city. Returns the Sun, Moon and rising signs, every planet with sign, degree and house, the five tightest aspects, an element and modality summary, and a link to the free full chart with the wheel on lunonis.com. Calculated in-house with an ephemeris (tropical zodiac, Placidus houses); nothing is stored. If the city name matches several places it returns status "ambiguous_place" with candidates: ask the user which one, then call again with that id as place.

read-only

Argument	Type	Description
date*	string	Birth date, YYYY-MM-DD (1900-2100)
lang	string	Language of the returned links (site language code). Default en.
time	string	Birth time, 24-hour HH:MM local time. Omit if unknown: the rising sign and houses are then left out, never guessed.
place*	string	Birth city name (e.g. "Lviv" or "Lviv, Ukraine"), or a place id from search_places. A name shared by several cities returns candidates to choose from.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "date",
    "place"
  ],
  "properties": {
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Birth date, YYYY-MM-DD (1900-2100)"
    },
    "lang": {
      "enum": [
        "en",
        "es",
        "pt",
        "fr",
        "de",
        "it",
        "pl",
        "tr",
        "ja",
        "zh",
        "uk"
      ],
      "type": "string",
      "description": "Language of the returned links (site language code). Default en."
    },
    "time": {
      "type": "string",
      "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
      "description": "Birth time, 24-hour HH:MM local time. Omit if unknown: the rising sign and houses are then left out, never guessed."
    },
    "place": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1,
      "description": "Birth city name (e.g. \"Lviv\" or \"Lviv, Ukraine\"), or a place id from search_places. A name shared by several cities returns candidates to choose from."
    }
  }
}

search_places

Find birth cities by name. Returns up to 6 candidates { id, name, region, country }, the biggest first. Use it to disambiguate a city, then pass the chosen id as the place of natal_chart or compatibility.

read-only

Argument	Type	Description
query*	string	City name, at least 2 characters (e.g. "Paris")

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "maxLength": 80,
      "minLength": 2,
      "description": "City name, at least 2 characters (e.g. \"Paris\")"
    }
  }
}

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