x402 payment protocol

The HIIE REST API provides programmatic access to all engineering tools.

Base URL

https://hiie.arthurlabs.net/api/v1

Authentication

API Key

curl -H "X-API-Key: hiie_..." https://hiie.arthurlabs.net/api/v1/pcb/trace-width

JWT (Wallet Auth)

curl -H "Authorization: Bearer <jwt>" https://hiie.arthurlabs.net/api/v1/flow/start

Response Format

All responses follow the standard envelope:

{
  "id": "req_...",
  "tool": "tool.name",
  "status": "succeeded",
  "credits_used": 1,
  "data": {}
}