# Otel Dotnet

> OpenTelemetry in .NET — DI/builder SDK setup (OpenTelemetry.Extensions.Hosting, AddOpenTelemetry), native BCL instrumentation (ActivitySource, System.Diagnostics.Metrics Meter, 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…

- **Type:** Skill
- **Install:** `agentstack add skill-ollygarden-opentelemetry-agent-skills-otel-dotnet`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [ollygarden](https://agentstack.voostack.com/s/ollygarden)
- **Installs:** 0
- **Category:** [Data & Analytics](https://agentstack.voostack.com/c/data-and-analytics)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [ollygarden](https://github.com/ollygarden)
- **Source:** https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet

## Install

```sh
agentstack add skill-ollygarden-opentelemetry-agent-skills-otel-dotnet
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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

| File | Use when |
|---|---|
| [`references/setup.md`](references/setup.md) | Setting up the SDK via the DI/builder path (`AddOpenTelemetry().WithTracing/WithMetrics/WithLogging`, `OpenTelemetry.Extensions.Hosting`), exporter wiring, env-var / `IConfiguration` inputs, and why there is no declarative YAML config in .NET. |
| [`references/api.md`](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`](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`](references/performance.md) | Tuning sampling, batch export processor, periodic metric reader, views, exporter choice, async context, graceful shutdown. |
| [`references/breaking-changes.md`](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 implement declarative config (see `references/setup.md`).
For .NET-specific facts:

| Fact | Fetch |
|---|---|
| Latest `OpenTelemetry` core / `core-*` tag | `gh api repos/open-telemetry/opentelemetry-dotnet/releases/latest -q '.tag_name'` |
| Latest NuGet package (`OpenTelemetry`, `OpenTelemetry.Extensions.Hosting`, exporters, `OpenTelemetry.Instrumentation.`) | `WebFetch https://www.nuget.org/packages/` (Version) |
| Latest auto-instrumentation agent | `gh api repos/open-telemetry/opentelemetry-dotnet-instrumentation/releases/latest -q '.tag_name'` |
| Core CHANGELOG (per package) | `WebFetch https://raw.githubusercontent.com/open-telemetry/opentelemetry-dotnet/main/src//CHANGELOG.md` |
| Contrib CHANGELOG (per package) | `WebFetch https://raw.githubusercontent.com/open-telemetry/opentelemetry-dotnet-contrib/main/src//CHANGELOG.md` |
| .NET getting-started / instrumentation docs | `WebFetch https://opentelemetry.io/docs/languages/dotnet/instrumentation/` |
| Zero-code agent docs | `WebFetch 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.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [ollygarden](https://github.com/ollygarden)
- **Source:** [ollygarden/opentelemetry-agent-skills](https://github.com/ollygarden/opentelemetry-agent-skills)
- **License:** Apache-2.0

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-ollygarden-opentelemetry-agent-skills-otel-dotnet
- Seller: https://agentstack.voostack.com/s/ollygarden
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.