---
title: Available instrumentations
linkTitle: Instrumentations
description: OpenTelemetry .NET Automatic Instrumentation supported libraries.
weight: 10
# prettier-ignore
cSpell:ignore: ADONET ASPNET ASPNETCORE Bootstrapper DBSTATEMENT ELASTICTRANSPORT ENTITYFRAMEWORKCORE GRPCNETCLIENT HOSTINGSTARTUPASSEMBLIES HTTPCLIENT ILOGGER ILREWRITE MASSTRANSIT MYSQLCONNECTOR MYSQLDATA NETRUNTIME netstandard NLOG npgsql NSERVICEBUS ORACLEMDA RABBITMQ SQLCLIENT SQLITE STACKEXCHANGEREDIS WCFCLIENT WCFCORE WCFSERVICE
---

The OpenTelemetry .NET Automatic Instrumentation supports a wide variety of
libraries.

## Instrumentations

All instrumentations are enabled by default for all signal types (traces,
metrics, and logs).

You can disable all instrumentations for a specific signal type by setting the
`OTEL_DOTNET_AUTO_{SIGNAL}_INSTRUMENTATION_ENABLED` environment variable to
`false`.

For a more granular approach, you can disable specific instrumentations for a
given signal type by setting the
`OTEL_DOTNET_AUTO_{SIGNAL}_{0}_INSTRUMENTATION_ENABLED` environment variable to
`false`, where `{SIGNAL}` is the type of signal, for example `TRACES`, and `{0}`
is the case-sensitive name of the instrumentation.

| Environment variable                                   | Description                                                                                                                                                                                                    | Default value                                                                          | Status                                                    |
| ------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- | --------------------------------------------------------- |
| `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`             | Enables all instrumentations.                                                                                                                                                                                  | `true`                                                                                 | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_INSTRUMENTATION_ENABLED`      | Enables all trace instrumentations. Overrides `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`.                                                                                                                      | Inherited from the current value of `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`         | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_{0}_INSTRUMENTATION_ENABLED`  | Configuration pattern for enabling a specific trace instrumentation, where `{0}` is the uppercase ID of the instrumentation you want to enable. Overrides `OTEL_DOTNET_AUTO_TRACES_INSTRUMENTATION_ENABLED`.   | Inherited from the current value of `OTEL_DOTNET_AUTO_TRACES_INSTRUMENTATION_ENABLED`  | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_METRICS_INSTRUMENTATION_ENABLED`     | Disables all metric instrumentations. Overrides `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`.                                                                                                                    | Inherited from the current value of `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`         | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_METRICS_{0}_INSTRUMENTATION_ENABLED` | Configuration pattern for enabling a specific metric instrumentation, where `{0}` is the uppercase ID of the instrumentation you want to enable. Overrides `OTEL_DOTNET_AUTO_METRICS_INSTRUMENTATION_ENABLED`. | Inherited from the current value of `OTEL_DOTNET_AUTO_METRICS_INSTRUMENTATION_ENABLED` | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_LOGS_INSTRUMENTATION_ENABLED`        | Disables all log instrumentations. Overrides `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`.                                                                                                                       | Inherited from the current value of `OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED`         | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_LOGS_{0}_INSTRUMENTATION_ENABLED`    | Configuration pattern for enabling a specific log instrumentation, where `{0}` is the uppercase ID of the instrumentation you want to enable. Overrides `OTEL_DOTNET_AUTO_LOGS_INSTRUMENTATION_ENABLED`.       | Inherited from the current value of `OTEL_DOTNET_AUTO_LOGS_INSTRUMENTATION_ENABLED`    | [Experimental](/docs/specs/otel/versioning-and-stability) |

## Traces instrumentations

**Status**: [Mixed](/docs/specs/otel/versioning-and-stability). Traces are
stable, but particular instrumentation libraries are in Experimental status due
to lack of stable semantic convention.

| ID                    | Instrumented library                                                                                                                                                                                                      | Supported versions     | Instrumentation type     | Status                                                    |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------- | ------------------------ | --------------------------------------------------------- |
| `ADONET`              | ADO.NET \[1\]                                                                                                                                                                                                             | \[2\]                  | bytecode                 | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ASPNET`              | ASP.NET (.NET Framework) MVC / WebApi \[3\] **Not supported on .NET**                                                                                                                                                     | \* \[4\]               | source & bytecode        | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ASPNETCORE`          | ASP.NET Core **Not supported on .NET Framework**                                                                                                                                                                          | \*                     | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `AZURE`               | [Azure SDK](https://azure.github.io/azure-sdk/releases/latest/index.html)                                                                                                                                                 | \[5\]                  | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ELASTICSEARCH`       | [Elastic.Clients.Elasticsearch](https://www.nuget.org/packages/Elastic.Clients.Elasticsearch)                                                                                                                             | \* \[6\]               | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ELASTICTRANSPORT`    | [Elastic.Transport](https://www.nuget.org/packages/Elastic.Transport)                                                                                                                                                     | ≥0.4.16                | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ENTITYFRAMEWORKCORE` | [Microsoft.EntityFrameworkCore](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore) **Not supported on .NET Framework**                                                                                         | ≥6.0.12                | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `GRAPHQL`             | [GraphQL](https://www.nuget.org/packages/GraphQL) **Not supported on .NET Framework**                                                                                                                                     | ≥7.5.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `GRPCNETCLIENT`       | [Grpc.Net.Client](https://www.nuget.org/packages/Grpc.Net.Client)                                                                                                                                                         | ≥2.52.0 & < 3.0.0      | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `HTTPCLIENT`          | [System.Net.Http.HttpClient](https://docs.microsoft.com/dotnet/api/system.net.http.httpclient) and [System.Net.HttpWebRequest](https://docs.microsoft.com/dotnet/api/system.net.httpwebrequest)                           | \*                     | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `KAFKA`               | [Confluent.Kafka](https://www.nuget.org/packages/Confluent.Kafka)                                                                                                                                                         | ≥1.4.0 & < 3.0.0 \[7\] | bytecode                 | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `MASSTRANSIT`         | [MassTransit](https://www.nuget.org/packages/MassTransit) **Not supported on .NET Framework**                                                                                                                             | ≥8.0.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `MONGODB`             | [MongoDB.Driver.Core](https://www.nuget.org/packages/MongoDB.Driver.Core) / [MongoDB.Driver](https://www.nuget.org/packages/MongoDB.Driver)                                                                               | ≥2.7.0                 | source or bytecode \[8\] | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `MYSQLCONNECTOR`      | [MySqlConnector](https://www.nuget.org/packages/MySqlConnector)                                                                                                                                                           | ≥2.0.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `MYSQLDATA`           | [MySql.Data](https://www.nuget.org/packages/MySql.Data) **Not supported on .NET Framework**                                                                                                                               | ≥8.1.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `NPGSQL`              | [Npgsql](https://www.nuget.org/packages/Npgsql)                                                                                                                                                                           | ≥6.0.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `NSERVICEBUS`         | [NServiceBus](https://www.nuget.org/packages/NServiceBus)                                                                                                                                                                 | ≥8.0.0 & < 10.0.0      | source & bytecode        | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ORACLEMDA`           | [Oracle.ManagedDataAccess.Core](https://www.nuget.org/packages/Oracle.ManagedDataAccess.Core) and [Oracle.ManagedDataAccess](https://www.nuget.org/packages/Oracle.ManagedDataAccess) **Not supported on ARM64**          | ≥23.4.0                | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `RABBITMQ`            | [RabbitMQ.Client](https://www.nuget.org/packages/RabbitMQ.Client/)                                                                                                                                                        | ≥5.0.0                 | source or bytecode \[9\] | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `QUARTZ`              | [Quartz](https://www.nuget.org/packages/Quartz) **Not supported on .NET Framework 4.7.1 and older**                                                                                                                       | ≥3.4.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `SQLCLIENT`           | [Microsoft.Data.SqlClient](https://www.nuget.org/packages/Microsoft.Data.SqlClient), [System.Data.SqlClient](https://www.nuget.org/packages/System.Data.SqlClient) \[10\] and `System.Data` (shipped with .NET Framework) | \* \[11\]              | source & bytecode \[12\] | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `SQLITE`              | [Microsoft.Data.Sqlite](https://www.nuget.org/packages/Microsoft.Data.Sqlite)                                                                                                                                             | ≥8.0.0 & < 12.0.0      | bytecode                 | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `STACKEXCHANGEREDIS`  | [StackExchange.Redis](https://www.nuget.org/packages/StackExchange.Redis)                                                                                                                                                 | \[13\]                 | source & bytecode        | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `WCFCLIENT`           | WCF                                                                                                                                                                                                                       | \*                     | source & bytecode        | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `WCFCORE`             | [CoreWCF.Primitives](https://www.nuget.org/packages/CoreWCF.Primitives) **Not supported on .NET Framework**                                                                                                               | ≥1.8.0                 | source                   | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `WCFSERVICE`          | WCF **Not supported on .NET**.                                                                                                                                                                                            | \*                     | source & bytecode        | [Experimental](/docs/specs/otel/versioning-and-stability) |

\[1\]: Generic ADO.NET instrumentation that covers `DbCommand` methods. It
covers only implementations for overridden methods. Typically, a lot of
implementations utilize the `new` C# keyword; such cases need specific
implementations. This instrumentation does not cover libraries covered by
specific instrumentations such as `SQLCLIENT`, `NPGSQL`, `MYSQLDATA`,
`MYSQLCONNECTOR`, `ORACLEMDA`, or `SQLITE`.

\[2\]: Supports `System.Data.Common` (≥4.0.0 and <12.0.0), `System.Data` for
.NET Framework (≥2.0.0 and <5.0.0), and `netstandard` (≥2.0.0 and <3.0.0).

\[3\]: Only integrated pipeline mode is supported.

\[4\]: `ASP.NET (.NET Framework) MVC / WebApi` is not supported on ARM64.

\[5\]: `Azure.` prefixed packages, released after October 1, 2021.

\[6\]: `Elastic.Clients.Elasticsearch` version ≥8.0.0 and <8.10.0. Version
≥8.10.0 is supported by `Elastic.Transport` instrumentation.

\[7\]: `Confluent.Kafka` is supported from version ≥1.8.2 on ARM64 for Windows
and Linux, and ≥1.9.2 on macOS.

\[8\]: `MongoDB.Driver` needs bytecode instrumentation only for < `3.7.0`
versions; `3.7.0+` uses only source instrumentation.

\[9\]: `RabbitMq.Client` needs bytecode instrumentation only for `5.*` and `6.*`
versions, `7.0.0+` uses only source instrumentation.

\[10\]: `System.Data.SqlClient` is
[deprecated](https://www.nuget.org/packages/System.Data.SqlClient/4.9.0#readme-body-tab).

\[11\]: `Microsoft.Data.SqlClient` v3.\* is not supported on .NET Framework, due
to [issue](https://github.com/open-telemetry/opentelemetry-dotnet/issues/4243).
`System.Data.SqlClient` is supported from version 4.8.5.

\[12\]: Bytecode instrumentation is used only for context propagation,
configurable by
`OTEL_DOTNET_EXPERIMENTAL_SQLCLIENT_ENABLE_TRACE_CONTEXT_PROPAGATION`.

\[13\]: `StackExchange.Redis` versions ≥2.6.122 and <4.0.0 are supported on
.NET, and versions ≥2.6.122 and <3.0.0 are supported on .NET Framework.

## Metrics instrumentations

**Status**: [Mixed](/docs/specs/otel/versioning-and-stability). Metrics are
stable, but particular instrumentation are in Experimental status due to lack of
stable semantic convention.

| ID            | Instrumented library                                                                                                                                                                                                     | Documentation                                                                                                                                                                                                 | Supported versions | Instrumentation type | Status                                                    |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------ | -------------------- | --------------------------------------------------------- |
| `ASPNET`      | ASP.NET Framework \[1\] **Not supported on .NET**                                                                                                                                                                        | [ASP.NET metrics](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/Instrumentation.AspNet-1.16.0/src/OpenTelemetry.Instrumentation.AspNet/README.md#list-of-metrics-produced)              | \*                 | source & bytecode    | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `ASPNETCORE`  | ASP.NET Core **Not supported on .NET Framework**                                                                                                                                                                         | [ASP.NET Core metrics](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/Instrumentation.AspNetCore-1.16.0/src/OpenTelemetry.Instrumentation.AspNetCore/README.md#list-of-metrics-produced) | \*                 | source               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `HTTPCLIENT`  | [System.Net.Http.HttpClient](https://docs.microsoft.com/dotnet/api/system.net.http.httpclient) and [System.Net.HttpWebRequest](https://docs.microsoft.com/dotnet/api/system.net.httpwebrequest)                          | [HttpClient metrics](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/Instrumentation.Http-1.16.0/src/OpenTelemetry.Instrumentation.Http/README.md#list-of-metrics-produced)               | \*                 | source               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `NETRUNTIME`  | [OpenTelemetry.Instrumentation.Runtime](https://www.nuget.org/packages/OpenTelemetry.Instrumentation.Runtime)                                                                                                            | [Runtime metrics](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/Instrumentation.Runtime-1.15.1/src/OpenTelemetry.Instrumentation.Runtime/README.md#metrics)                             | \*                 | source               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `NPGSQL`      | [Npgsql](https://www.nuget.org/packages/Npgsql) **Not supported on .NET Framework**                                                                                                                                      | [Npgsql metrics](https://www.npgsql.org/doc/diagnostics/metrics.html)                                                                                                                                         | ≥6.0.0             | source               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `NSERVICEBUS` | [NServiceBus](https://www.nuget.org/packages/NServiceBus)                                                                                                                                                                | [NServiceBus metrics](https://docs.particular.net/samples/open-telemetry/prometheus-grafana/#reporting-metric-values)                                                                                         | ≥8.0.0 & < 10.0.0  | source & bytecode    | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `PROCESS`     | [OpenTelemetry.Instrumentation.Process](https://www.nuget.org/packages/OpenTelemetry.Instrumentation.Process)                                                                                                            | [Process metrics](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/Instrumentation.Process-1.16.0-beta.1/src/OpenTelemetry.Instrumentation.Process/README.md#metrics)                      | \*                 | source               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `SQLCLIENT`   | [Microsoft.Data.SqlClient](https://www.nuget.org/packages/Microsoft.Data.SqlClient), [System.Data.SqlClient](https://www.nuget.org/packages/System.Data.SqlClient) \[2\] and `System.Data` (shipped with .NET Framework) | [SqlClient metrics](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/releases/tag/Instrumentation.SqlClient-1.16.0)                                                                             | \* \[3\]           | source               | [Experimental](/docs/specs/otel/versioning-and-stability) |

\[1\]: The ASP.NET metrics are generated only if the `AspNet` trace
instrumentation is also enabled.

\[2\]: `System.Data.SqlClient` is
[deprecated](https://www.nuget.org/packages/System.Data.SqlClient/4.9.0#readme-body-tab).

\[3\]: `Microsoft.Data.SqlClient` v3.\* is not supported on .NET Framework, due
to [issue](https://github.com/open-telemetry/opentelemetry-dotnet/issues/4243).
`System.Data.SqlClient` is supported from version 4.8.5.

## Logs instrumentations

**Status**: [Experimental](/docs/specs/otel/versioning-and-stability).

| ID        | Instrumented library                                                                                                            | Supported versions | Instrumentation type     | Status                                                    |
| --------- | ------------------------------------------------------------------------------------------------------------------------------- | ------------------ | ------------------------ | --------------------------------------------------------- |
| `ILOGGER` | [Microsoft.Extensions.Logging](https://www.nuget.org/packages/Microsoft.Extensions.Logging) **Not supported on .NET Framework** | ≥8.0.0 && < 12.0.0 | bytecode or source \[1\] | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `LOG4NET` | [log4net](https://www.nuget.org/packages/log4net) \[2\]                                                                         | ≥2.0.13 && < 4.0.0 | bytecode                 | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `NLOG`    | [NLog](https://www.nuget.org/packages/NLog) \[2\]                                                                               | ≥5.0.0 && < 7.0.0  | bytecode                 | [Experimental](/docs/specs/otel/versioning-and-stability) |

\[1\]: For ASP.NET Core applications, the `LoggingBuilder` instrumentation can
be enabled without using the .NET CLR Profiler by setting the
`ASPNETCORE_HOSTINGSTARTUPASSEMBLIES` environment variable to
`OpenTelemetry.AutoInstrumentation.AspNetCoreBootstrapper`.

\[2\]: Instrumentation provides both trace context injection and logs bridge.

### Instrumentation options

| Environment variable                                                              | Description                                                                                                                                                                                                                                                                                          | Default value | Status                                                    |
| --------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- | --------------------------------------------------------- |
| `OTEL_DOTNET_AUTO_ENTITYFRAMEWORKCORE_SET_DBSTATEMENT_FOR_TEXT`                   | Whether the Entity Framework Core instrumentation can pass SQL statements through the `db.statement` attribute. Queries might contain sensitive information. If set to `false`, `db.statement` is recorded only for executing stored procedures.                                                     | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_GRAPHQL_SET_DOCUMENT`                                           | Whether the GraphQL instrumentation can pass raw queries through the `graphql.document` attribute. Queries might contain sensitive information.                                                                                                                                                      | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_ORACLEMDA_DATABASE_OPENTELEMETRY_TRACING`                       | Whether the Oracle Client instrumentation enables database OpenTelemetry tracing and propagates context to the server. \[1\]                                                                                                                                                                         | `true`        | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_ORACLEMDA_SET_DBSTATEMENT_FOR_TEXT`                             | Whether the Oracle Client instrumentation can pass SQL statements through the `db.statement` attribute. Queries might contain sensitive information. If set to `false`, `db.statement` is recorded only for executing stored procedures.                                                             | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_SQLCLIENT_SET_DBSTATEMENT_FOR_TEXT`                             | Whether the SQL Client instrumentation can pass SQL statements through the `db.statement` attribute. Queries might contain sensitive information. If set to `false`, `db.statement` is recorded only for executing stored procedures. **Not supported on .NET Framework for System.Data.SqlClient.** | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_ASPNET_INSTRUMENTATION_CAPTURE_REQUEST_HEADERS`          | A comma-separated list of HTTP header names. ASP.NET instrumentations will capture HTTP request header values for all configured header names.                                                                                                                                                       |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_ASPNET_INSTRUMENTATION_CAPTURE_RESPONSE_HEADERS`         | A comma-separated list of HTTP header names. ASP.NET instrumentations will capture HTTP response header values for all configured header names. **Not supported on IIS Classic mode.**                                                                                                               |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_ASPNETCORE_INSTRUMENTATION_CAPTURE_REQUEST_HEADERS`      | A comma-separated list of HTTP header names. ASP.NET Core instrumentations will capture HTTP request header values for all configured header names.                                                                                                                                                  |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_ASPNETCORE_INSTRUMENTATION_CAPTURE_RESPONSE_HEADERS`     | A comma-separated list of HTTP header names. ASP.NET Core instrumentations will capture HTTP response header values for all configured header names.                                                                                                                                                 |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_GRPCNETCLIENT_INSTRUMENTATION_CAPTURE_REQUEST_METADATA`  | A comma-separated list of gRPC metadata names. Grpc.Net.Client instrumentations will capture gRPC request metadata values for all configured metadata names.                                                                                                                                         |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_GRPCNETCLIENT_INSTRUMENTATION_CAPTURE_RESPONSE_METADATA` | A comma-separated list of gRPC metadata names. Grpc.Net.Client instrumentations will capture gRPC response metadata values for all configured metadata names.                                                                                                                                        |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_HTTP_INSTRUMENTATION_CAPTURE_REQUEST_HEADERS`            | A comma-separated list of HTTP header names. HTTP Client instrumentations will capture HTTP request header values for all configured header names.                                                                                                                                                   |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_TRACES_HTTP_INSTRUMENTATION_CAPTURE_RESPONSE_HEADERS`           | A comma-separated list of HTTP header names. HTTP Client instrumentations will capture HTTP response header values for all configured header names.                                                                                                                                                  |               | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_EXPERIMENTAL_ASPNETCORE_DISABLE_URL_QUERY_REDACTION`                 | Whether the ASP.NET Core instrumentation turns off redaction of the `url.query` attribute value.                                                                                                                                                                                                     | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_EXPERIMENTAL_HTTPCLIENT_DISABLE_URL_QUERY_REDACTION`                 | Whether the HTTP client instrumentation turns off redaction of the `url.full` attribute value.                                                                                                                                                                                                       | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_EXPERIMENTAL_ASPNET_DISABLE_URL_QUERY_REDACTION`                     | Whether the ASP.NET instrumentation turns off redaction of the `url.query` attribute value.                                                                                                                                                                                                          | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_EXPERIMENTAL_SQLCLIENT_ENABLE_TRACE_CONTEXT_PROPAGATION`             | .NET Framework only. Whether the `SQLCLIENT` instrumentation turns on context propagation to the SQL Server.                                                                                                                                                                                         | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |
| `OTEL_DOTNET_AUTO_SQLCLIENT_NETFX_ILREWRITE_ENABLED`                              | \[2\]                                                                                                                                                                                                                                                                                                | `false`       | [Experimental](/docs/specs/otel/versioning-and-stability) |

\[1\]: This feature is supported only by packages `23.26.200` and newer. It also
requires an Oracle AI Database 26ai server.

\[2\]: Enables IL rewriting of `SqlCommand` on .NET Framework to ensure
`CommandText` is present for `SqlClient` instrumentation, which is required for
`db.query.text` and `db.query.summary` to be populated. Previously,
`CommandText` was only available for stored procedures. With this setting
enabled, it is also available for raw queries. This changes the behavior of
events emitted by the
[`SqlEventSource`](https://github.com/dotnet/SqlClient/blob/v1.0.19239.1/src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlCommand.cs#L6369),
which might impact other parts of the application if this mechanism is used.
