# @opentelemetry/exporter-prometheus

> OpenTelemetry Exporter Prometheus provides a metrics endpoint for Prometheus

Latest version **0.222.0** (published 2026-08-31) · Apache-2.0 license · 0 weekly downloads

## Install

```sh
npm install @opentelemetry/exporter-prometheus
pnpm add @opentelemetry/exporter-prometheus
yarn add @opentelemetry/exporter-prometheus
bun add @opentelemetry/exporter-prometheus
```

## Health

**Score 70/100 (B)** — status: active.

Positive: has types; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score.

Warnings: low downloads; no esm support; pre 1.0.

## Facts

| | |
|---|---|
| Version | 0.222.0 |
| Published | 2026-08-31 |
| First published | 2019-12-13 |
| Weekly downloads | 0 |
| License | Apache-2.0 |
| TypeScript types | bundled |
| Module format | CommonJS |
| Node | ^18.19.0 \|\| >=20.6.0 |
| Dependencies | 4 |
| Unpacked size | 78.3 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 3485 |
| Author | OpenTelemetry Authors |
| Maintainers | dyladan, pichlermarc, overbalance, npmjs-account, trentm, martinkuba |
| Keywords | opentelemetry, nodejs, tracing, profiling |

## Links

- npm: https://www.npmjs.com/package/@opentelemetry/exporter-prometheus
- Repository: https://github.com/open-telemetry/opentelemetry-js
- Homepage: https://github.com/open-telemetry/opentelemetry-js/tree/main/experimental/packages/opentelemetry-exporter-prometheus
- Issues: https://github.com/open-telemetry/opentelemetry-js/issues
- npm.io page: https://npm.io/package/@opentelemetry/exporter-prometheus

## Dependencies (4)

- [@opentelemetry/core](https://npm.io/package/@opentelemetry/core.md) 2.11.0
- [@opentelemetry/resources](https://npm.io/package/@opentelemetry/resources.md) 2.11.0
- [@opentelemetry/sdk-metrics](https://npm.io/package/@opentelemetry/sdk-metrics.md) 2.11.0
- [@opentelemetry/semantic-conventions](https://npm.io/package/@opentelemetry/semantic-conventions.md) ^1.29.0

## Recent versions

- 0.222.0 (latest) — 2026-08-31
- 0.300.0-development.1 (canary) — 2026-10-05
- 0.34.0 (next) — 2022-11-09
- 0.300.0-development.0 — 2026-09-21
- 0.222.0-development.0 — 2026-08-31
- 0.221.0 — 2026-07-21
- 0.220.0 — 2026-07-02
- 0.219.0 — 2026-06-11
- 0.218.0 — 2026-05-13
- 0.217.0 — 2026-05-06
- 0.216.0 — 2026-04-29
- 0.215.0 — 2026-04-17
- 0.214.0 — 2026-03-25
- 0.213.0 — 2026-03-03
- 0.212.0 — 2026-02-12
- … 205 more at https://npm.io/package/@opentelemetry/exporter-prometheus/versions

## README

# OpenTelemetry Prometheus Metric Exporter

[![NPM Published Version][npm-img]][npm-url]
[![Apache License][license-image]][license-image]

**Note: This is an experimental package under active development. New releases may include breaking changes.**

The OpenTelemetry Prometheus Metrics Exporter allows the user to send collected [OpenTelemetry Metrics](https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/sdk-metrics) to Prometheus.

[Prometheus](https://prometheus.io/) is a monitoring system that collects metrics, by scraping exposed endpoints at regular intervals, evaluating rule expressions. It can also trigger alerts if certain conditions are met. For assistance setting up Prometheus, [click here for a guided codelab](https://opencensus.io/codelabs/prometheus/#0).

## Installation

```bash
npm install --save @opentelemetry/sdk-metrics
npm install --save @opentelemetry/exporter-prometheus
```

## Usage

Create & register the exporter on your application.

```js
const { PrometheusExporter } = require('@opentelemetry/exporter-prometheus');
const { MeterProvider }  = require('@opentelemetry/sdk-metrics');

// Add your port and startServer to the Prometheus options
const options = {port: 9464};
const exporter = new PrometheusExporter(options);

// Creates MeterProvider and installs the exporter as a MetricReader
const meterProvider = new MeterProvider({
  readers: [exporter],
});
const meter = meterProvider.getMeter('example-prometheus');

// Now, start recording data
const counter = meter.createCounter('metric_name', {
  description: 'Example of a counter'
});
counter.add(10, { pid: process.pid });

// .. some other work
```

## Viewing your metrics

With the above you should now be able to navigate to the Prometheus UI at: <http://localhost:9464/metrics>

## Useful links

- For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
- To learn more about Prometheus, visit: <https://prometheus.io/>
- For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]

## License

Apache 2.0 - See [LICENSE][license-url] for more information.

[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
[license-url]: https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE
[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
[npm-url]: https://www.npmjs.com/package/@opentelemetry/exporter-prometheus
[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Fexporter-prometheus.svg

---
_Source: https://npm.io/package/@opentelemetry/exporter-prometheus · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._