curl --request GET \
  --url https://api-m.sandbox.paypal.com/v1/commerce/billing/plans/{plan_code} \
  --header 'Authorization: Bearer <token>'

{
  "name": "test-plan",
  "code": "test-plan",
  "billing_cycle": "WEEKLY",
  "description": "Pro plan for pro UBB customers",
  "amount": {
    "value": 1000,
    "currency_code": "USD"
  },
  "trial_period": 0,
  "pay_in_advance": true,
  "usage_based_charges": [
    {
      "id": "fggdgd5c-31a6-4d74-b607-ac3915796ab9",
      "metric_id": "92c9175c-31a6-4d74-b607-ac3915796ab9",
      "charge_model": "STANDARD",
      "properties": {
        "amount": "1.00"
      },
      "min_amount": {
        "value": 1,
        "currency_code": "USD"
      }
    }
  ],
  "minimum_commitment": {
    "amount": {
      "value": 100,
      "currency_code": "USD"
    },
    "invoice_display_name": "Minimum Commitment",
    "id": "cc82edfd-8198-4942-bed8-fcd7afb5191e",
    "plan_code": "ubb_plan_1753826420",
    "created_at": "2025-07-31T08:41:19Z",
    "updated_at": "2025-07-31T08:41:19Z"
  },
  "created_at": "2025-07-30T00:59:35Z",
  "id": "95de3538-3827-496b-89a0-120745360830"
}

{
  "name": "NOT_AUTHORIZED",
  "message": "Authorization failed due to insufficient permissions.",
  "debug_id": "565f78f101498",
  "details": [
    {
      "issue": "PERMISSION_DENIED",
      "description": "You do not have permission to access or perform operations on this resource."
    }
  ]
}

{
  "name": "<string>",
  "debug_id": "<string>",
  "message": "<string>",
  "details": [
    {
      "field": "<string>",
      "value": "<string>",
      "location": "<string>",
      "issue": "<string>",
      "description": "<string>"
    }
  ]
}

{
  "name": "INTERNAL_SERVER_ERROR",
  "message": "An internal server error has occurred.",
  "debug_id": "90957fca61718"
}