Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnetgit clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ollygarden/opentelemetry-agent-skills/otel-dotnet)<a href="https://agentmods.dev/skills/ollygarden/opentelemetry-agent-skills/otel-dotnet"><img src="https://agentmods.dev/badge/skills/ollygarden/opentelemetry-agent-skills/otel-dotnet/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ollygarden/opentelemetry-agent-skills/otel-dotnet"><img src="https://agentmods.dev/badge/skills/ollygarden/opentelemetry-agent-skills/otel-dotnet.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00187 | $0.00932 |
| Opus 5.5 | $0.00075 | $0.00373 |
| Sonnet 5.5 | $0.00037 | $0.00186 |
| Haiku 4.5 | $0.00019 | $0.00093 |
Grade A, and why
otel-dotnet scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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 |
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:
| 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.<pkg>) |
WebFetch https://www.nuget.org/packages/<PackageId> (Version) |
| Latest auto-instrumentation agent | gh 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 docs | WebFetch https://opentelemetry.io/docs/languages/dotnet/instrumentation/ |
| Zero-code agent docs | WebFetch https://opentelemetry.io/docs/zero-code/dotnet/ |
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed 4e532a5deb53
- 1mo ago Changed db7f9d07222f
- 2mo ago First seen · 42 lines · 187 tokens per session scan A 2dbab2e39940
otel-dotnet is a skill published in the GitHub repository ollygarden/opentelemetry-agent-skills (125 stars, last pushed yesterday), licensed Apache-2.0. It adds 187 tokens to every session and 932 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
otel-dotnet compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| otel-dotnetollygarden/opentelemetry-agent-skills | Skill | 125 | yesterday | Apache-2.0 | A | 187 | Claude Code |
| opentelemetry-net-instrumentationAaronontheweb/dotnet-skills | Skill | 1.3k | 9d ago | MIT | A | 56 | Claude Code |
| golang-observabilityseaworld008/Commonly-used-high-value-skills | Skill | 74 | 2d ago | MIT | A | 20 | Claude Code, Codex |
| golang-observability-opentelemetrybobmatnyc/claude-mpm-skills | Skill | 78 | 3mo ago | MIT | A | 31 | Claude Code |
| serilog-logging-setupStefanTheCode/dotnet-ai-toolkit | Skill | 26 | 2mo ago | MIT | A | 112 | Claude Code |
| otel-python-stylesuperloglabs/skills | Skill | 13 | 5mo ago | Apache-2.0 | A | 31 | Claude Code, Codex |
| azure-mgmt-apicenter-dotnetmicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 97 | Claude Code |