LAGO_URL="https://api.getlago.com"
API_KEY="__YOUR_API_KEY__"

curl --location --request POST "$LAGO_URL/api/v1/billable_metrics" \
--header "Authorization: Bearer $API_KEY" \
--header 'Content-Type: application/json' \
--data-raw '{
    "billable_metric": {
    "name": "Storage",
    "code": "storage",
    "description": "GB of storage used in my application",
    "aggregation_type": "sum_agg",
    "recurring": false,
    "field_name": "gb",
    "weighted_interval": "seconds",
    "filters": [
      {
        "key": "region",
        "values": ["us-east-1", "us-east-2", "eu-west-1"]
      }
    ]
  }
}'

from lago_python_client.client import Client
from lago_python_client.exceptions import LagoApiError
from lago_python_client.models import BillableMetricFilter, BillableMetric

client = Client(api_key='__YOUR_API_KEY__')

filter = BillableMetricFilter(
  key='region',
  values=['us-east-1', 'us-east-2', 'eu-west-1']
)

billable_metric = BillableMetric(
name='Storage',
code='storage',
recurring=false,
description='GB of storage used in my application',
aggregation_type='sum_agg',
field_name='gb',
weighted_interval= 'seconds',
filters=[filter]
)
try:
    client.billable_metrics.create(billable_metric)
except LagoApiError as e:
    repair_broken_state(e)  # do something on error or raise your own exception

require 'lago-ruby-client'

client = Lago::Api::Client.new({api_key: '__YOUR_API_KEY__'})

client.billable_metrics.create({
  name: 'Storage',
  code: 'storage',
  description: 'GB of storage used in my application',
  aggregation_type: 'sum_agg',
  recurring: false,
  field_name: 'gb',
  weighted_interval: 'seconds',
  filters: [
    {
      key: 'region',
      values: %w[us-east-1 us-east-2 eu-west-1]
    }
  ]
})

await client.billableMetrics.createBillableMetric({
  billable_metric: {
    name: "Storage",
    code: "storage",
    aggregation_type: "sum_agg",
    recurring: false,
    field_name: "gb",
    weighted_interval: "seconds",
    filters: [
      {
        key: "region",
        values: ["us-east-1", "us-east-2", "eu-west-1"],
      }
    ]
  },
});

import "fmt"
import "github.com/getlago/lago-go-client"

func main() {
  lagoClient := lago.New().
    SetApiKey("__YOUR_API_KEY__")

  bmInput := &lago.BillableMetricInput{
    Name:            "Storage",
    Code:            "storage",
    Description:     "GB of storage used in my application"
    AggregationType: lago.SumAggregation,
    FieldName:       "gb",
    WeightedInterval:"seconds",
    Recurring:       false,
    Filters: [1]map[string]interface{}{
        "key": "region",
        "values": [3]string{"us-east-1", "us-east-2", "eu-west-1"},
    },
  }

  billableMetric, err := lagoClient.BillableMetric().Create(bmInput)
  if err != nil {
    // Error is *lago.Error
    panic(err)
  }

  // billableMetric is *lago.BillableMetric
  fmt.Println(billableMetric)
}

using System.Collections.Generic;
using System.Diagnostics;
using Org.OpenAPITools.Api;
using Org.OpenAPITools.Client;
using Org.OpenAPITools.Model;

namespace Example
{
public class CreateBillableMetricExample
{
    public static void Main()
    {
        Configuration.Default.BasePath = "https://api.getlago.com/api/v1";
        // Configure HTTP bearer authorization: bearerAuth
        Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";

        var apiInstance = new BillableMetricsApi(Configuration.Default);
        var billableMetricInput = new BillableMetricInput(); // BillableMetricInput | Billable metric payload

        try
        {
            // Create a new billable metric
            BillableMetric result = apiInstance.CreateBillableMetric(billableMetricInput);
            Debug.WriteLine(result);
        }
        catch (ApiException e)
        {
            Debug.Print("Exception when calling BillableMetricsApi.CreateBillableMetric: " + e.Message );
            Debug.Print("Status Code: "+ e.ErrorCode);
            Debug.Print(e.StackTrace);
        }
    }
  }
}

<?php
require_once(__DIR__ . '/vendor/autoload.php');


// Configure Bearer authorization: bearerAuth
$config = OpenAPI\Client\Configuration::getDefaultConfiguration()->setAccessToken('YOUR_ACCESS_TOKEN');


$apiInstance = new OpenAPI\Client\Api\BillableMetricsApi(
// If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
// This is optional, `GuzzleHttp\Client` will be used as default.
new GuzzleHttp\Client(),
$config
);
$billable_metric_input = new \OpenAPI\Client\Model\BillableMetricInput(); // \OpenAPI\Client\Model\BillableMetricInput | Billable metric payload

try {
$result = $apiInstance->createBillableMetric($billable_metric_input);
print_r($result);
} catch (Exception $e) {
echo 'Exception when calling BillableMetricsApi->createBillableMetric: ', $e->getMessage(), PHP_EOL;
}