Definition
The Bodygraph is the central diagram in Human Design. It is a schematic representation of the human energy system, combining elements from the I Ching, Kabbalah Tree of Life, Hindu-Brahmin Chakra system, and modern genetics into a single visual map. Every person has a unique Bodygraph calculated from their exact birth date, time, and location.
Structure of the Bodygraph
9 Centers
The Bodygraph contains 9 energy Centers, analogous to chakras. Each Center governs specific biological and psychological functions:
- Head — Inspiration, mental pressure
- Ajna — Conceptualization, mental processing
- Throat — Communication, manifestation
- G (Self) — Identity, direction, love
- Heart (Ego) — Willpower, material resources
- Sacral — Life force, work capacity, sexuality
- Solar Plexus — Emotions, feelings, desires
- Spleen — Intuition, immune system, survival
- Root — Adrenaline, stress, drive
A Center is either defined (colored in, consistent energy) or undefined (white, receptive to conditioning). The API response includes a defined_centers array listing which Centers are active.
64 Gates
Gates are specific activations within Centers, derived from the 64 hexagrams of the I Ching. Each Gate has 6 Lines (sub-positions) that add nuance. The API returns Gates with their line, color, and tone values when using the full /v1/bodygraph endpoint.
36 Channels
Channels are connections between two Gates in different Centers. When both Gates of a Channel are activated, the Channel is defined and creates a consistent energy flow between those Centers. The API response includes a channels array with channel identifiers and names.
How the API generates a Bodygraph
The Human Design API calculates precise planetary positions at the moment of birth (Personality) and 88 solar degrees before birth (Design). These planetary positions are mapped to specific Gates using the Human Design wheel, which assigns each of the 64 Gates to a specific arc of the ecliptic.
The full calculation requires:
- Astronomical position data for 13 celestial bodies
- The Human Design Gate-to-degree mapping table
- Center activation rules based on Gate pairs
The /v1/bodygraph endpoint performs this entire calculation and returns the complete chart as structured JSON.