Update docs/docs/cloud/reference/env_var.md

Co-authored-by: Lauren Hirata Singh <lauren@langchain.dev>
This commit is contained in:
Sam Crowder
2025-07-16 14:17:56 -07:00
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co-authored by Lauren Hirata Singh
parent 7f821deded
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@@ -28,7 +28,8 @@ Specify `DD_API_KEY` (your [Datadog API Key](https://docs.datadoghq.com/account_
If `DD_API_KEY` is specified, the application process is wrapped in the [`ddtrace-run` command](https://ddtrace.readthedocs.io/en/stable/installation_quickstart.html). Other `DD_*` environment variables (e.g. `DD_SITE`, `DD_ENV`, `DD_SERVICE`, `DD_TRACE_ENABLED`) are typically needed to properly configure the tracing instrumentation. See [`DD_*` environment variables](https://ddtrace.readthedocs.io/en/stable/configuration.html) for more details.
> **Note:** Enabling `DD_API_KEY` (and thus `ddtrace-run`) can override or interfere with other autoinstrumentation solutions (such as OpenTelemetry) that you may have instrumented into your application code.
!!! note
Enabling `DD_API_KEY` (and thus `ddtrace-run`) can override or interfere with other auto-instrumentation solutions (such as OpenTelemetry) that you may have instrumented into your application code.
## `LANGCHAIN_TRACING_SAMPLING_RATE`