ollygarden/opentelemetry-agent-skills/otel-dotnet

Claude Code and agent skill by ollygarden/opentelemetry-agent-skills

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OpenTelemetry in .NET — DI/builder SDK setup (OpenTelemetry.Extensions.Hosting, AddOpenTelemetry, UseOtlpExporter, OpenTelemetrySdk.Create), native .NET instrumentation APIs (ActivitySource, System.Diagnostics.Metrics Meter) plus logging abstractions (ILogger), zero-code CLR-profiler agent, contrib instrumentation packages, performance tuning, and breaking-change audits. Use when adding, reviewing, or configuring OpenTelemetry in a .NET or ASP.NET Core service. Triggers on "setup otel in dotnet", "dotnet telemetry", ".net tracing", "ASP.NET Core opentelemetry", "AddOpenTelemetry", "UseOtlpExporter", "OpenTelemetrySdk.Create", "ActivitySource", "System.Diagnostics.Metrics Meter", "ILogger opentelemetry", "OpenTelemetry.Extensions.Hosting", "opentelemetry-dotnet-instrumentation", or any C# OTel question.

Install

npx vskill@latest install ollygarden/opentelemetry-agent-skills/otel-dotnet

SKILL.md

OpenTelemetry in .NET

Entry point for OpenTelemetry mechanics in .NET services. Load a reference below based on the task; each reference is self-contained.

References

FileUse when
`references/setup.md`Setting up the SDK via the DI/builder path (AddOpenTelemetry().WithTracing/WithMetrics/WithLogging, UseOtlpExporter, OpenTelemetrySdk.Create, OpenTelemetry.Extensions.Hosting), exporter wiring, env-var / IConfiguration inputs, and why there is no released declarative YAML config in .NET.
`references/api.md`Instrumenting with native BCL APIs (ActivitySource/Activity, System.Diagnostics.Metrics.Meter, ILogger), how the SDK subscribes (AddSource/AddMeter), attributes, propagation, and the optional OTel API shim.
`references/instrumentation-libraries.md`Zero-code (the opentelemetry-dotnet-instrumentation CLR-profiler agent), the contrib instrumentation-package catalog, and manual instrumentation following semconv.
`references/performance.md`Tuning sampling (built-in samplers incl. AlwaysRecordSampler), batch export processor, periodic metric reader, views, exporter choice, async context, graceful shutdown.
`references/breaking-changes.md`Auditing existing code for deprecated/renamed APIs and semconv changes across recent core/contrib releases.

Sources of Truth

For YAML schema details (language-agnostic), see the otel-declarative-config skill — but note .NET does not yet have a released declarative-config implementation (see references/setup.md). For .NET-specific facts:

FactFetch
Latest OpenTelemetry core / core-* taggh api repos/open-telemetry/opentelemetry-dotnet/releases/latest -q '.tag_name'
Latest NuGet package (OpenTelemetry, OpenTelemetry.Extensions.Hosting, exporters, OpenTelemetry.Instrumentation.<pkg>)WebFetch https://www.nuget.org/packages/<PackageId> (Version)
Latest auto-instrumentation agentgh api repos/open-telemetry/opentelemetry-dotnet-instrumentation/releases/latest -q '.tag_name'
Core CHANGELOG (per package, at the release being audited)WebFetch https://raw.githubusercontent.com/open-telemetry/opentelemetry-dotnet/<core-tag>/src/<Package>/CHANGELOG.md
Contrib CHANGELOG (per package, at that package's release tag)WebFetch https://raw.githubusercontent.com/open-telemetry/opentelemetry-dotnet-contrib/<package-tag>/src/<Package>/CHANGELOG.md
.NET getting-started / instrumentation docsWebFetch https://opentelemetry.io/docs/languages/dotnet/instrumentation/
Zero-code agent docsWebFetch https://opentelemetry.io/docs/zero-code/dotnet/

Cross-References

  • Schema-level facts: otel-declarative-config skill (language-agnostic YAML schema sources; .NET not yet implemented).
  • SDK version selection across languages: otel-sdk-versions skill.
  • Semantic conventions lookup: otel-semantic-conventions skill.

Security

  • Security scanPassed, 90 of 100Pattern checks on the skill's files.
  • Model reviewPassed

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