curl --request GET \
  --url https://api.ledgerbeam.com/v1/billing/plans \
  --header 'API-KEY: <api-key>'

{
  "data": [
    {
      "id": "plan_free",
      "name": "Free Plan",
      "description": "Free tier with basic features",
      "price": 0,
      "currency": "USD",
      "features": [
        "1000 requests/month",
        "Basic support"
      ],
      "limits": {
        "requests_per_month": 1000,
        "rate_limit_per_minute": 10
      }
    }
  ]
}