# Expvar Receiver

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> OpenTelemetry Collector receiver · contrib distribution

An Expvar Receiver scrapes metrics from [expvar](https://pkg.go.dev/expvar), which exposes data in JSON format from an HTTP endpoint. The metrics are extracted from the `expvar` variable [memstats](https://pkg.go.dev/runtime#MemStats), which exposes various information about the Go runtime.

- **Component ID**: `contrib-expvarreceiver`
- **Name**: `expvarreceiver`
- **Type**: receiver
- **Distribution**: contrib
- **Repository**: `opentelemetry-collector-contrib`

## Stability

| Level | Signals |
| --- | --- |
| alpha | metrics |

## Data

- **JSON**: [/data/collector/components/contrib-expvarreceiver/contrib-expvarreceiver-76c71096c72c.json](/data/collector/components/contrib-expvarreceiver/contrib-expvarreceiver-76c71096c72c.json)
- **Explore**: [/collector/components/contrib/expvarreceiver](/collector/components/contrib/expvarreceiver)