---
title: "Rate.add(value, [tags]) | Grafana k6 documentation"
description: "Set the value of the Rate metric."
---

> For a curated documentation index, see [llms.txt](/llms.txt). For the complete documentation index, see [llms-full.txt](/llms-full.txt).

# Rate.add(value, \[tags])

Set the value of the `Rate` metric.

Expand table

| Parameter | Type   | Description                                                                                                                                                                 |
|-----------|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| value     | number | The value to add to the rate metric.                                                                                                                                        |
| tags      | object | Set of [tags](/docs/k6/next/using-k6/tags-and-groups/) that will be tagged to the added data point (note that tags are added per data point and not for the entire metric). |

[Rate examples](/docs/k6/next/javascript-api/k6-metrics/rate/#examples)