# `PolarExpress.Schemas.MeterCreate`
[🔗](https://github.com/jeffhuen/polar_express/blob/main/lib/polar_express/schemas/meter_create.ex#L2)

MeterCreate

# `t`

```elixir
@type t() :: %PolarExpress.Schemas.MeterCreate{
  aggregation:
    PolarExpress.Schemas.CountAggregation.t()
    | PolarExpress.Schemas.PropertyAggregation.t()
    | PolarExpress.Schemas.UniqueAggregation.t()
    | nil,
  filter: PolarExpress.Schemas.Filter.t() | nil,
  metadata:
    %{
      required(String.t()) =&gt; String.t() | integer() | float() | boolean() | nil
    }
    | nil,
  name: String.t() | nil,
  organization_id: String.t() | nil
}
```

* `aggregation` - The aggregation to apply on the filtered events to calculate the meter.
* `filter` - The filter to apply on events that'll be used to calculate the meter.
* `metadata` - Key-value object allowing you to store additional information.

The key must be a string with a maximum length of **40 characters**.
The value must be either:

* A string with a maximum length of **500 characters**
* An integer
* A floating-point number
* A boolean

You can store up to **50 key-value pairs**.
* `name` - The name of the meter. Will be shown on customer's invoices and usage.
* `organization_id` - The ID of the organization owning the meter. **Required unless you use an organization token.** Nullable.

# `schema_name`

---

*Consult [api-reference.md](api-reference.md) for complete listing*
