curl --request POST \
  --url https://mag3nt.com/api/issue \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "purpose": "Research Agent",
  "limit_amount": 50,
  "network": "eip155:8453"
}
'

{
  "success": true,
  "card": {
    "id": "sx_a66a6666-1234-5678-9abc-def012345678",
    "token": "tok_3b9fe670-abcd-efgh-ijkl-mnopqrstuvwx",
    "purpose": "Research Agent",
    "limit_amount": 50,
    "status": "ACTIVE",
    "mcc_locks": "",
    "single_use": 0,
    "expires_at": "2023-11-07T05:31:56Z",
    "funding_network": "eip155:8453",
    "funding_asset": "USDC",
    "wallet_address": "0x1234...abcd",
    "balance": 0,
    "remaining": 50,
    "created_at": "2023-11-07T05:31:56Z"
  }
}