How to Get a Human Design API Key
How API Keys Are Created
Your API key is created automatically after you purchase an eligible API membership on my.humandesign.ai. The purchase flow is powered by Paid Memberships Pro, and key creation is triggered automatically when the membership is granted.
Where to Find Your Key
- Sign in to the API portal.
- Open the API key panel.
- Reveal and copy your key.
The same key works across legacy REST, Agent HTTP, and MCP.
Plan Levels
| Plan | PMPro Level | Monthly Quota |
|---|---|---|
| Creator | 18 | 1,000 API units |
| Startup | 17 | 10,000 API units |
| Business | 20 | 100,000 API units |
| Enterprise | 19 | Custom |
Shared Billing
Your monthly quota is shared across every billed API surface:
- Legacy REST requests
- Agent HTTP tool calls
- MCP
tools/callrequests
You do not need separate keys for REST and MCP.
Authentication Summary
Use header authentication everywhere. Legacy REST also supports ?api_key=... for backwards compatibility, but Agent HTTP and MCP require headers only.
X-Api-Key: your_api_key_here
Authorization: Bearer your_api_key_hereWhat Happens If You Upgrade
When you upgrade your membership, the same key continues working. Your access tier and monthly quota are updated on the billing side, and the API begins enforcing the new entitlements automatically.