curl --request POST \
  --url https://api.cloud.flexprice.io/v1/addons \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "description": "<string>",
  "lookup_key": "<string>",
  "metadata": {},
  "name": "<string>",
  "type": "onetime"
}'

{
  "created_at": "<string>",
  "created_by": "<string>",
  "description": "<string>",
  "entitlements": [
    {
      "addon": {
        "created_at": "<string>",
        "created_by": "<string>",
        "description": "<string>",
        "entitlements": [
          {}
        ],
        "environment_id": "<string>",
        "id": "<string>",
        "lookup_key": "<string>",
        "metadata": {},
        "name": "<string>",
        "prices": [
          {
            "amount": 123,
            "billing_cadence": "RECURRING",
            "billing_model": "FLAT_FEE",
            "billing_period": "MONTHLY",
            "billing_period_count": 123,
            "conversion_rate": 123,
            "created_at": "<string>",
            "created_by": "<string>",
            "currency": "<string>",
            "description": "<string>",
            "display_amount": "<string>",
            "display_price_unit_amount": "<string>",
            "end_date": "<string>",
            "entity_id": "<string>",
            "entity_type": "PLAN",
            "environment_id": "<string>",
            "id": "<string>",
            "invoice_cadence": "ARREAR",
            "lookup_key": "<string>",
            "metadata": {},
            "meter": {
              "aggregation": {
                "bucket_size": "MINUTE",
                "field": "<string>",
                "multiplier": 123,
                "type": "COUNT"
              },
              "created_at": "2024-03-20T15:04:05Z",
              "event_name": "api_request",
              "filters": [
                {}
              ],
              "id": "550e8400-e29b-41d4-a716-446655440000",
              "name": "API Usage Meter",
              "reset_usage": "BILLING_PERIOD",
              "status": "published",
              "tenant_id": "tenant123",
              "updated_at": "2024-03-20T15:04:05Z"
            },
            "meter_id": "<string>",
            "parent_price_id": "<string>",
            "plan_id": "<string>",
            "price_unit": "<string>",
            "price_unit_amount": 123,
            "price_unit_id": "<string>",
            "price_unit_tiers": [
              {
                "flat_amount": 123,
                "unit_amount": 123,
                "up_to": 123
              }
            ],
            "price_unit_type": "FIAT",
            "pricing_unit": {
              "base_currency": "<string>",
              "code": "<string>",
              "conversion_rate": 123,
              "created_at": "<string>",
              "created_by": "<string>",
              "environment_id": "<string>",
              "id": "<string>",
              "name": "<string>",
              "precision": 123,
              "status": "published",
              "symbol": "<string>",
              "tenant_id": "<string>",
              "updated_at": "<string>",
              "updated_by": "<string>"
            },
            "start_date": "<string>",
            "status": "published",
            "tenant_id": "<string>",
            "tier_mode": "VOLUME",
            "tiers": [
              {
                "flat_amount": 123,
                "unit_amount": 123,
                "up_to": 123
              }
            ],
            "transform_quantity": {
              "divide_by": 123,
              "round": "<string>"
            },
            "trial_period": 123,
            "type": "USAGE",
            "updated_at": "<string>",
            "updated_by": "<string>"
          }
        ],
        "status": "published",
        "tenant_id": "<string>",
        "type": "onetime",
        "updated_at": "<string>",
        "updated_by": "<string>"
      },
      "created_at": "<string>",
      "created_by": "<string>",
      "display_order": 123,
      "entity_id": "<string>",
      "entity_type": "PLAN",
      "environment_id": "<string>",
      "feature": {
        "created_at": "<string>",
        "created_by": "<string>",
        "description": "<string>",
        "environment_id": "<string>",
        "id": "<string>",
        "lookup_key": "<string>",
        "metadata": {},
        "meter": {
          "aggregation": {
            "bucket_size": "MINUTE",
            "field": "<string>",
            "multiplier": 123,
            "type": "COUNT"
          },
          "created_at": "2024-03-20T15:04:05Z",
          "event_name": "api_request",
          "filters": [
            {}
          ],
          "id": "550e8400-e29b-41d4-a716-446655440000",
          "name": "API Usage Meter",
          "reset_usage": "BILLING_PERIOD",
          "status": "published",
          "tenant_id": "tenant123",
          "updated_at": "2024-03-20T15:04:05Z"
        },
        "meter_id": "<string>",
        "name": "<string>",
        "status": "published",
        "tenant_id": "<string>",
        "type": "metered",
        "unit_plural": "<string>",
        "unit_singular": "<string>",
        "updated_at": "<string>",
        "updated_by": "<string>"
      },
      "feature_id": "<string>",
      "feature_type": "metered",
      "id": "<string>",
      "is_enabled": true,
      "is_soft_limit": true,
      "plan": {
        "created_at": "<string>",
        "created_by": "<string>",
        "credit_grants": [
          {
            "cadence": "ONETIME",
            "created_at": "<string>",
            "created_by": "<string>",
            "credits": 123,
            "environment_id": "<string>",
            "expiration_duration": 123,
            "expiration_duration_unit": "DAY",
            "expiration_type": "NEVER",
            "id": "<string>",
            "metadata": {},
            "name": "<string>",
            "period": "DAILY",
            "period_count": 123,
            "plan_id": "<string>",
            "priority": 123,
            "scope": "PLAN",
            "status": "published",
            "subscription_id": "<string>",
            "tenant_id": "<string>",
            "updated_at": "<string>",
            "updated_by": "<string>"
          }
        ],
        "description": "<string>",
        "display_order": 123,
        "entitlements": [
          {}
        ],
        "environment_id": "<string>",
        "id": "<string>",
        "lookup_key": "<string>",
        "metadata": {},
        "name": "<string>",
        "prices": [
          {
            "amount": 123,
            "billing_cadence": "RECURRING",
            "billing_model": "FLAT_FEE",
            "billing_period": "MONTHLY",
            "billing_period_count": 123,
            "conversion_rate": 123,
            "created_at": "<string>",
            "created_by": "<string>",
            "currency": "<string>",
            "description": "<string>",
            "display_amount": "<string>",
            "display_price_unit_amount": "<string>",
            "end_date": "<string>",
            "entity_id": "<string>",
            "entity_type": "PLAN",
            "environment_id": "<string>",
            "id": "<string>",
            "invoice_cadence": "ARREAR",
            "lookup_key": "<string>",
            "metadata": {},
            "meter": {
              "aggregation": {
                "bucket_size": "MINUTE",
                "field": "<string>",
                "multiplier": 123,
                "type": "COUNT"
              },
              "created_at": "2024-03-20T15:04:05Z",
              "event_name": "api_request",
              "filters": [
                {}
              ],
              "id": "550e8400-e29b-41d4-a716-446655440000",
              "name": "API Usage Meter",
              "reset_usage": "BILLING_PERIOD",
              "status": "published",
              "tenant_id": "tenant123",
              "updated_at": "2024-03-20T15:04:05Z"
            },
            "meter_id": "<string>",
            "parent_price_id": "<string>",
            "plan_id": "<string>",
            "price_unit": "<string>",
            "price_unit_amount": 123,
            "price_unit_id": "<string>",
            "price_unit_tiers": [
              {
                "flat_amount": 123,
                "unit_amount": 123,
                "up_to": 123
              }
            ],
            "price_unit_type": "FIAT",
            "pricing_unit": {
              "base_currency": "<string>",
              "code": "<string>",
              "conversion_rate": 123,
              "created_at": "<string>",
              "created_by": "<string>",
              "environment_id": "<string>",
              "id": "<string>",
              "name": "<string>",
              "precision": 123,
              "status": "published",
              "symbol": "<string>",
              "tenant_id": "<string>",
              "updated_at": "<string>",
              "updated_by": "<string>"
            },
            "start_date": "<string>",
            "status": "published",
            "tenant_id": "<string>",
            "tier_mode": "VOLUME",
            "tiers": [
              {
                "flat_amount": 123,
                "unit_amount": 123,
                "up_to": 123
              }
            ],
            "transform_quantity": {
              "divide_by": 123,
              "round": "<string>"
            },
            "trial_period": 123,
            "type": "USAGE",
            "updated_at": "<string>",
            "updated_by": "<string>"
          }
        ],
        "status": "published",
        "tenant_id": "<string>",
        "updated_at": "<string>",
        "updated_by": "<string>"
      },
      "plan_id": "<string>",
      "static_value": "<string>",
      "status": "published",
      "tenant_id": "<string>",
      "updated_at": "<string>",
      "updated_by": "<string>",
      "usage_limit": 123,
      "usage_reset_period": "MONTHLY"
    }
  ],
  "environment_id": "<string>",
  "id": "<string>",
  "lookup_key": "<string>",
  "metadata": {},
  "name": "<string>",
  "prices": [
    {
      "amount": 123,
      "billing_cadence": "RECURRING",
      "billing_model": "FLAT_FEE",
      "billing_period": "MONTHLY",
      "billing_period_count": 123,
      "conversion_rate": 123,
      "created_at": "<string>",
      "created_by": "<string>",
      "currency": "<string>",
      "description": "<string>",
      "display_amount": "<string>",
      "display_price_unit_amount": "<string>",
      "end_date": "<string>",
      "entity_id": "<string>",
      "entity_type": "PLAN",
      "environment_id": "<string>",
      "id": "<string>",
      "invoice_cadence": "ARREAR",
      "lookup_key": "<string>",
      "metadata": {},
      "meter": {
        "aggregation": {
          "bucket_size": "MINUTE",
          "field": "<string>",
          "multiplier": 123,
          "type": "COUNT"
        },
        "created_at": "2024-03-20T15:04:05Z",
        "event_name": "api_request",
        "filters": [
          {}
        ],
        "id": "550e8400-e29b-41d4-a716-446655440000",
        "name": "API Usage Meter",
        "reset_usage": "BILLING_PERIOD",
        "status": "published",
        "tenant_id": "tenant123",
        "updated_at": "2024-03-20T15:04:05Z"
      },
      "meter_id": "<string>",
      "parent_price_id": "<string>",
      "plan_id": "<string>",
      "price_unit": "<string>",
      "price_unit_amount": 123,
      "price_unit_id": "<string>",
      "price_unit_tiers": [
        {
          "flat_amount": 123,
          "unit_amount": 123,
          "up_to": 123
        }
      ],
      "price_unit_type": "FIAT",
      "pricing_unit": {
        "base_currency": "<string>",
        "code": "<string>",
        "conversion_rate": 123,
        "created_at": "<string>",
        "created_by": "<string>",
        "environment_id": "<string>",
        "id": "<string>",
        "name": "<string>",
        "precision": 123,
        "status": "published",
        "symbol": "<string>",
        "tenant_id": "<string>",
        "updated_at": "<string>",
        "updated_by": "<string>"
      },
      "start_date": "<string>",
      "status": "published",
      "tenant_id": "<string>",
      "tier_mode": "VOLUME",
      "tiers": [
        {
          "flat_amount": 123,
          "unit_amount": 123,
          "up_to": 123
        }
      ],
      "transform_quantity": {
        "divide_by": 123,
        "round": "<string>"
      },
      "trial_period": 123,
      "type": "USAGE",
      "updated_at": "<string>",
      "updated_by": "<string>"
    }
  ],
  "status": "published",
  "tenant_id": "<string>",
  "type": "onetime",
  "updated_at": "<string>",
  "updated_by": "<string>"
}