> ## Documentation Index
> Fetch the complete documentation index at: https://otel.fyi/llms.txt
> Use this file to discover all available pages before exploring further.

# Stef

> OpenTelemetry receiver for Stef

# Stef Receiver

![Status](https://img.shields.io/badge/status-alpha-red)

**Available in:** `contrib`

**Maintainers:** [@tigrannajaryan](https://github.com/tigrannajaryan), [@MovieStoreGuy](https://github.com/MovieStoreGuy), [@dmitryax](https://github.com/dmitryax), [@atoulme](https://github.com/atoulme), [@pjanotti](https://github.com/pjanotti), [@crobert-1](https://github.com/crobert-1)

**Source:** [opentelemetry-collector-contrib](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/stefreceiver)

## Supported Telemetry

![Metrics](https://img.shields.io/badge/metrics-alpha-green)

## Overview

For more about OTel/STEF, see [STEF exporter docs](../../exporter/stefexporter/README.md).

## Configuration

* `endpoint` (default = localhost:4320 for grpc protocol):
  host:port on which the receiver is going to receive data. Refer to
  [naming documentation](https://github.com/grpc/grpc/blob/master/doc/naming.md)
  for valid syntax for host part.
* `ack_interval` (default: 10ms). The periodical interval of time when sending acknowledgements back to the client.

Example:

```yaml theme={null}
stef:
  endpoint: 0.0.0.0:4320
```

OTel/STEF is a compact and fast telemetry format.

STEF receiver supports the following advanced settings:

* [gRPC settings](https://github.com/open-telemetry/opentelemetry-collector/blob/main/config/configgrpc/README.md)
* [TLS and mTLS settings](https://github.com/open-telemetry/opentelemetry-collector/blob/main/config/configtls/README.md)

## Configuration

### Example Configuration

```yaml theme={null}
stef/endpoint:
  endpoint: 0.0.0.0:3456
stef/tls:
  tls:
    key_file: server.key
```

***

*Last generated: 2026-07-06*