Zodiac sign

Map a birth date to a Western tropical zodiac sun sign using fixed calendar day ranges (Aries through Pisces). The result is the traditional astrology label associated with the sun’s ecliptic position approximated by civil month and day—not a full natal chart with houses, aspects, or rising sign.

How it works

The date is parsed into month and day. A decision table assigns signs by inclusive ranges (for example March 21–April 19 → Aries, April 20–May 20 → Taurus, …, February 19–March 20 → Pisces, with Capricorn spanning late December into mid-January). Boundary days follow the conventional popular-astrology cutovers used in many almanacs; astronomical exact ingress times can differ by hours.

When to use it

• Quick sun-sign lookup for entertainment, party games, or trivia
• Teaching the twelve-sign calendar without ephemeris software
• Cross-checking a printed horoscope column against a birth date

Limitations

This is not scientific astronomy or personalized forecasting. It ignores birth time, place, precession (sidereal vs tropical), and planetary positions. People born on cusp days may see different signs in other systems. Output is a cultural label, not medical or psychological advice.

Example

Birth date 1990-07-15 (month 7, day 15) falls in the Cancer range (June 21–July 22) and yields the sign key cancer. Date 2001-12-25 yields capricorn.

This skill is available over A2A JSON-RPC and REST. When you already know the skill id and export, call execute directly—no discovery step required.

REST example

curl -sS -X POST https://toolplaza.app/api/helpers/execute \
  -H 'Content-Type: application/json' \
  -d '{"skillId":"horoscope__zodiac","export":"getZodiacSignKey","args":["Hello"]}'

A2A JSON-RPC example

Send POST https://toolplaza.app/api/a2a with:

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "message/send",
  "params": {
    "message": {
      "messageId": "uuid",
      "role": "user",
      "parts": [
        {
          "kind": "text",
          "text": "ignored"
        }
      ]
    },
    "metadata": {
      "toolplaza": {
        "skillId": "horoscope__zodiac",
        "export": "getZodiacSignKey",
        "args": [
          "Hello"
        ]
      }
    }
  }
}

Full Agent API guide · Skill schema