ajaykevin_code

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[oak fulcrum]

i need to sum all the usage of a product and add it to the billing
@hard flameCould I check what sort of products are you referring to?

Do you mean a Metered Product?

If so, then the Billing Meter needs to be set up in a way that allows that to be possible. E.g. default_aggregation: { formula: 'sum' },

const meter = await stripe.billing.meters.create({
display_name: 'Product Usage',
event_name: 'product_usage',
default_aggregation: { formula: 'sum' },
});
After which you can list event summaries like this:

const summaries = await stripe.billing.meters.listEventSummaries(
meterId,
{
customer: customerId,
start_time: Math.floor(new Date('2026-03-01').getTime() / 1000),
end_time: Math.floor(new Date('2026-04-01').getTime() / 1000),
}
);