# @opentelemetry/exporter-metrics-otlp-proto > OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector using protobuf over HTTP Latest version **0.222.0** (published 2026-08-31) · Apache-2.0 license · 0 weekly downloads ## Install ```sh npm install @opentelemetry/exporter-metrics-otlp-proto pnpm add @opentelemetry/exporter-metrics-otlp-proto yarn add @opentelemetry/exporter-metrics-otlp-proto bun add @opentelemetry/exporter-metrics-otlp-proto ``` ## Health **Score 75/100 (B)** — status: active. Positive: has types; esm support; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score. Warnings: low downloads; pre 1.0. ## Facts | | | |---|---| | Version | 0.222.0 | | Published | 2026-08-31 | | First published | 2021-11-11 | | Weekly downloads | 0 | | License | Apache-2.0 | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Node | ^18.19.0 \|\| >=20.6.0 | | Dependencies | 3 | | Unpacked size | 67.1 KB | | Known vulnerabilities | 0 | | Install scripts | no | | Provenance | attested (GitHub Actions) | | GitHub stars | 3468 | | Author | OpenTelemetry Authors | | Maintainers | dyladan, pichlermarc, overbalance, npmjs-account, trentm, martinkuba | | Keywords | opentelemetry, nodejs, protobuf, tracing, profiling, metrics, stats | ## Links - npm: https://www.npmjs.com/package/@opentelemetry/exporter-metrics-otlp-proto - Repository: https://github.com/open-telemetry/opentelemetry-js - Homepage: https://github.com/open-telemetry/opentelemetry-js/tree/main/experimental/packages/opentelemetry-exporter-metrics-otlp-proto - Issues: https://github.com/open-telemetry/opentelemetry-js/issues - npm.io page: https://npm.io/package/@opentelemetry/exporter-metrics-otlp-proto ## Dependencies (3) - [@opentelemetry/otlp-transformer](https://npm.io/package/@opentelemetry/otlp-transformer.md) 0.222.0 - [@opentelemetry/otlp-exporter-base](https://npm.io/package/@opentelemetry/otlp-exporter-base.md) 0.222.0 - [@opentelemetry/exporter-metrics-otlp-http](https://npm.io/package/@opentelemetry/exporter-metrics-otlp-http.md) 0.222.0 ## Recent versions - 0.222.0 (latest) — 2026-08-31 - 0.222.0-development.0 (canary) — 2026-08-31 - 0.34.0 (next) — 2022-11-09 - 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 - 0.211.0 — 2026-01-21 - 0.210.0 — 2026-01-14 - … 59 more at https://npm.io/package/@opentelemetry/exporter-metrics-otlp-proto/versions ## README # OpenTelemetry Collector Metrics Exporter for node with protobuf [![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.** This module provides a metrics-exporter for OTLP (http/protobuf) using protocol version `v1.7.0`. ## Installation ```bash npm install --save @opentelemetry/exporter-metrics-otlp-proto ``` ## Shared HTTP exporter options This exporter uses the shared HTTP options documented in [`@opentelemetry/otlp-exporter-base`][otlp-exporter-base-config]. That includes `url`, `headers`, `timeoutMillis`, `concurrencyLimit`, and Node.js options such as `compression`, `keepAlive`, `httpAgentOptions`, and `userAgent`. ## Service Name The OpenTelemetry Collector Exporter does not have a service name configuration. In order to set the service name, use the `service.name` resource attribute as prescribed in the [OpenTelemetry Resource Semantic Conventions][semconv-resource-service-name]. To see sample code and documentation for the traces exporter, visit the [Collector Trace Exporter for web and node][trace-exporter-url]. ## Metrics in Node - PROTO over http ```js const { MeterProvider, PeriodicExportingMetricReader } = require('@opentelemetry/sdk-metrics'); const { OTLPMetricExporter } = require('@opentelemetry/exporter-metrics-otlp-proto'); const collectorOptions = { url: '', // url is optional and can be omitted - default is http://localhost:4318/v1/metrics }; const metricExporter = new OTLPMetricExporter(collectorOptions); const meterProvider = new MeterProvider({ readers: [ new PeriodicExportingMetricReader({ exporter: metricExporter, exportIntervalMillis: 1000, }), ], }); // Now, start recording data const meter = meterProvider.getMeter('example-meter'); const counter = meter.createCounter('metric_name'); counter.add(10, { 'key': 'value' }); ``` ## Environment Variable Configuration In addition to settings passed to the constructor, the exporter also supports configuration via environment variables: | Environment variable | Description | | ------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | OTEL_EXPORTER_OTLP_ENDPOINT | The endpoint to send metrics to. This will also be used for the traces exporter if `OTEL_EXPORTER_OTLP_TRACES_ENDPOINT` is not configured. By default `http://localhost:4318` will be used. `/v1/metrics` will be automatically appended to configured values. | | OTEL_EXPORTER_OTLP_METRICS_ENDPOINT | The endpoint to send metrics to. By default `http://localhost:4318/v1/metrics` will be used. `v1/metrics` will not be appended automatically and has to be added explicitly. | | OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE | The exporters aggregation temporality preference. Valid values are `cumulative`, `delta` and `lowmemory`. `cumulative` selects cumulative temporality for all instrument kinds. `delta` selects delta aggregation temporality for Counter, Asynchronous Counter and Histogram instrument kinds, and selects cumulative aggregation for UpDownCounter and Asynchronous UpDownCounter instrument kinds. `lowmemory` selects delta aggregation temporality for Counter and Histogram instrument kinds, and selects cumulative aggregation for UpDownCounter, Asynchronous Counter and Asynchronous UpDownCounter instrument kinds. By default `cumulative` is used. | > Settings configured programmatically take precedence over environment variables. Per-signal environment variables take > precedence over non-per-signal environment variables. ## Running opentelemetry-collector locally to see the metrics 1. Go to `examples/otlp-exporter-node` 2. Follow the instructions there to observe the metrics. ## Useful links - For more information on OpenTelemetry, visit: - For more about OpenTelemetry JavaScript: - 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-metrics-otlp-proto [otlp-exporter-base-config]: https://github.com/open-telemetry/opentelemetry-js/tree/main/experimental/packages/otlp-exporter-base#http-exporter-configuration [npm-img]: https://badge.fury.io/js/%40opentelemetry%2Fexporter-metrics-otlp-proto.svg [semconv-resource-service-name]: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/semantic_conventions/README.md#service [trace-exporter-url]: https://github.com/open-telemetry/opentelemetry-js/tree/main/experimental/packages/exporter-trace-otlp-http --- _Source: https://npm.io/package/@opentelemetry/exporter-metrics-otlp-proto · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._