curl -X PATCH "https://api.tokenlab.sh/v1/management/api-keys/key_abc123def456" \
  -H "Authorization: Bearer mt-your-management-token" \
  -H "Content-Type: application/json" \
  -d '{
    "status": "inactive",
    "limitAmount": 0
  }'

{
  "id": "key_abc123def456",
  "name": "Backend Worker",
  "key_prefix": "sk-live...",
  "status": "inactive",
  "limit_amount": 0,
  "limit_amount_decimal": "0",
  "used_amount": 148.25,
  "used_amount_decimal": "148.25",
  "models": [
    "gpt-5-mini",
    "claude-3-7-sonnet"
  ],
  "expires_at": "2026-12-31T23:59:59.000Z",
  "last_used_at": "2026-07-08T03:12:45.000Z",
  "created_at": "2026-07-01T10:00:00.000Z"
}