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

# Observability Configuration

> Control OpenTelemetry traces and HTTP metrics, and optional product telemetry (heartbeat) in Blnk.

This page covers the top-level flags that control **operational** observability (OpenTelemetry and metrics) and **product** heartbeat telemetry. These settings are independent from [queue monitoring](/advanced/monitoring-port), which exposes a separate HTTP port for queue inspection.

***

## Telemetry and observability flags

Use these boolean flags to opt in to traces and metrics, or to product usage telemetry.

<CodeGroup>
  ```bash blnk.env theme={"system"}
  BLNK_ENABLE_TELEMETRY=false
  BLNK_ENABLE_OBSERVABILITY=false
  ```

  ```json blnk.json theme={"system"}
  {
    "enable_telemetry": false,
    "enable_observability": false
  }
  ```
</CodeGroup>

|                             | Description                                                                                                                                                                                                                   | Default |
| :-------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------ |
| `BLNK_ENABLE_OBSERVABILITY` | When `true`, Blnk initializes the **OpenTelemetry** SDK, exports **traces**, and serves the **HTTP `/metrics` endpoint** (Prometheus-style metrics) as wired in the server. Use this for APM, dashboards, and SRE visibility. | `false` |
| `BLNK_ENABLE_TELEMETRY`     | When `true`, Blnk sends **product heartbeat / usage** telemetry (for example to PostHog) so the team can understand usage trends. It is **not** the same switch as distributed traces or `/metrics`.                          | `false` |

<Note>
  **Please note:** These flags do different things. For traces and the metrics HTTP handler, use `BLNK_ENABLE_OBSERVABILITY`. For optional product-level heartbeat reporting, use `BLNK_ENABLE_TELEMETRY`. You can enable either, both, or neither.
</Note>

***

## Need help?

We are very happy to help you make the most of Blnk, regardless of whether it is your first time or you are switching from another tool.

To ask questions or discuss issues, please [contact us](mailto:support@blnkfinance.com) or [join our Discord community](https://discord.gg/7WNv94zPpx).

***

<Tip>
  **Tip:** Connect to Blnk Cloud to see your Core data.

  You can view your transactions, manage identities, create custom reports, invite other team members to collaborate, and perform operations on your Core — all in one dashboard.

  [Check out Blnk Cloud →](https://www.blnkfinance.com/products/cloud)
</Tip>