Documentation Reference LibraryList centers

List centers

GET/library/centersRESTFrom Free

List all nine Human Design centers.

Retrieve a compact index of defined and undefined center concepts for educational products.

Authentication

Use Authorization: Bearer YOUR_API_KEY or X-Api-Key. Query-key authentication is deprecated compatibility behavior on supported REST routes and is rejected on Agent HTTP and MCP surfaces. Never put credentials in URLs, request bodies, or browser code.

Parameters

Name	In	Required	Description
`X-Api-Key`	header	Yes	API key used by the authorization middleware. `YOUR_API_KEY`

Quota effect

This is a free, non-consuming lookup. Authorized calls use 0 calculation units.

Errors

Expect 400 for invalid input, 401 for a missing or malformed key, 403 when the active plan does not include this operation, and 429 when the monthly allowance is exhausted.

Related operations

RequestcURL

curl "https://api.humandesign.ai/library/centers" \
  -H "X-Api-Key: YOUR_API_KEY"

Verified response examplecURL

{
  "TotalCenters": 9,
  "Centers": [
    {
      "Center": "Head",
      "Name": "Head Center",
      "Type": "Pressure",
      "Theme": "Inspiration & Mental Pressure",
      "GateCount": 3
    },
    {
      "Center": "Ajna",
      "Name": "Ajna Center",
      "Type": "Awareness",
      "Theme": "Conceptualization & Mental Processing",
      "GateCount": 6
    }
  ]
}

Captured from the live API on 6 August 2026. 43/43 live checks passed. Secrets and account-specific usage are removed; large payloads show a truthful excerpt.

Free includes 100 calls every month.
Free members can use every operation labelled “From Free,” including the core Agent HTTP and MCP tools.