Human Design Compatibility API

Calculate a Human Design connection chart by overlaying two bodygraphs. For each of the 36 channels the dynamic between the two people is classified as electromagnetic, dominance, compromise, or companionship, the four mechanics of how two designs meet. Also returns the nine centers as defined or open in the combined bodygraph with which person defines each, the combined definition, and a count of each dynamic. Built for relationship, dating, and coaching tools.

Request

POST /api/v2/human-design/connection

{
  "personA": {
    "date": "1990-07-15",
    "time": "13:00:00",
    "timezone": "America/New_York"
  },
  "personB": {
    "date": "1990-07-15",
    "time": "13:00:00",
    "timezone": "America/New_York"
  }
}

Response

Structured JSON with documented fields, covered by 6,991 automated tests per deploy, 1,527 of them gold-standard tests verified against NASA JPL Horizons. Not hallucinated text.

{
  "totalChannels": 14,
  "channels": [
    {
      "gateA": 34,
      "gateB": 20,
      "name": "Charisma",
      "circuit": "Individual",
      "centers": [
        "throat",
        "sacral"
      ],
      "dynamic": "Electromagnetic",
      "personAGates": [
        34
      ],
      "personBGates": [
        20
      ]
    }
  ],
  "centers": [
    {
      "id": "sacral",
      "name": "Sacral",
      "defined": true,
      "definedBy": [
        "A"
      ]
    }
  ],
  "combinedDefinition": "Single",
  "summary": {
    "electromagnetic": 3,
    "dominance": 2,
    "compromise": 1,
    "companionship": 4
  }
}

Supported options

Call it in your language in seconds.

Every snippet is generated from the live OpenAPI spec, so method names, parameters, and fields always match production.

import { createRoxy } from '@roxyapi/sdk'

const roxy = createRoxy(process.env.ROXY_API_KEY!)
const { data } = await roxy.humanDesign.calculateConnection({ body: { personA: { date: '1990-07-15', time: '13:00:00', timezone: 'America/New_York' }, personB: { date: '1990-07-15', time: '13:00:00', timezone: 'America/New_York' } } })

from roxy_sdk import create_roxy

roxy = create_roxy("YOUR_API_KEY")
result = roxy.human_design.calculate_connection(person_a={'date': '1990-07-15', 'time': '13:00:00', 'timezone': 'America/New_York'}, person_b={'date': '1990-07-15', 'time': '13:00:00', 'timezone': 'America/New_York'})

use function RoxyAPI\Sdk\createRoxy;

$roxy = createRoxy(getenv('ROXY_API_KEY'));
$result = $roxy->humanDesign->calculateConnection(personA: ['date' => '1990-07-15', 'time' => '13:00:00', 'timezone' => 'America/New_York'], personB: ['date' => '1990-07-15', 'time' => '13:00:00', 'timezone' => 'America/New_York']);

using RoxyApi;

var roxy = new RoxyClient(Environment.GetEnvironmentVariable("ROXY_API_KEY")!);
var result = await roxy.HumanDesign.Connection.PostAsync(new() { /* request fields above */ });

import roxyapi "github.com/RoxyAPI/sdk-go"

roxy, _ := roxyapi.NewRoxy(os.Getenv("ROXY_API_KEY"))
resp, _ := roxy.HumanDesign.CalculateConnection(ctx, nil, roxyapi.CalculateConnectionJSONRequestBody{ /* request fields above */ })

curl -X POST "https://roxyapi.com/api/v2/human-design/connection" \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"personA":{"date":"1990-07-15","time":"13:00:00","timezone":"America/New_York"},"personB":{"date":"1990-07-15","time":"13:00:00","timezone":"America/New_York"}}'

More Human Design Compatibility endpoints

The Human Design Compatibility API bundles these related endpoints under one key.

Remote MCP for AI agents

Every Human Design endpoint is a callable tool on the Remote MCP server over Streamable HTTP. No local setup, no Docker. Claude, ChatGPT, Cursor, and any MCP client auto-discover the tools and ground their answers in verified data.

claude mcp add --transport http \
  roxy-human-design https://roxyapi.com/mcp/human-design \
  --header "X-API-Key: YOUR_KEY"

Tool name for POST /human-design/connection: post_human_design_connection. Full MCP setup guide

What you can build

Drop-in UI components & widgets

Render Human Design Compatibility API responses without building charts yourself. Install the npm package and drop these into Next.js, React, Vue, Svelte, Angular, or plain HTML, or embed the very same component on Squarespace, Wix, or WordPress by pasting one snippet, with no backend and no build step. They belong to one library that covers the entire spiritual stack rather than astrology alone, MIT licensed and included in every plan at no extra cost, never a separate product and never an upsell. The Human Design Compatibility API calculations, the interface that renders them, and the Remote MCP your agent calls, all behind one key, end to end.

HD connection widget snippetHD penta widget snippetThe complete UI libraryExplore Roxy UI

Related capabilities

Human Design Compatibility API FAQ