Why do I need to provide my birth year?

Zodiac sign transitions (cusps) do not occur on the same calendar day every year due to Earth's orbital variations. Providing the year ensures the `calculate_cusp` tool identifies the precise boundaries for your specific birth period.

What information can I get about a zodiac sign?

By using `get_sign_details`, you can retrieve the fundamental astrological attributes of any sign, including its element (e.g., Fire, Water), modality (e.g., Cardinal, Fixed), and polarity (e.g., Masculine, Feminine).

Can this tool calculate my full astrological profile?

Yes, by combining the `calculate_cusp` and `get_sign_details` tools, you can determine your sign's boundaries and its corresponding elemental and modal characteristics for a complete identity summary.

Sun Sign Calculator MCP Connector for Claude

A+

Calculate precise zodiac signs with year-specific cusp transitions and astrological properties.

2 tools Official Updated Jun 30, 2026 Official Vinkius Partner

More Details Connect to Claude

The Sun Sign Calculator provides highly accurate astrological data by calculating zodiac sign cusps based on the specific birth year. Unlike static date ranges, this tool accounts for orbital variations to identify the exact start and end dates of a sign's period. Use calculate_cusp to find your sign's boundaries and get_sign_details to retrieve elemental, modal, and polarity attributes like Fire, Earth, Cardinal, or Masculine.

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