Aspire Service Defaults
Aaronontheweb/dotnet-skills
Sets up a shared ServiceDefaults project for .NET Aspire apps that centralizes OpenTelemetry, health checks, HTTP resilience and service discovery for every service.
OpenTelemetry in .NET — DI/builder SDK setup (OpenTelemetry.Extensions.Hosting, AddOpenTelemetry, UseOtlpExporter, OpenTelemetrySdk.Create), native .NET instrumentation APIs (ActivitySource…
Install Otel Dotnet
$ npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ollygarden/opentelemetry-agent-skills otel-dotnet --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/otel-dotnet .claude/skills/otel-dotnet && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "otel-dotnet" agent skill from https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet into .claude/skills/otel-dotnet/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "otel-dotnet", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnetType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ollygarden/opentelemetry-agent-skills otel-dotnet --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/otel-dotnet .agents/skills/otel-dotnet && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "otel-dotnet" agent skill from https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet into .agents/skills/otel-dotnet/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "otel-dotnet", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ollygarden/opentelemetry-agent-skills otel-dotnet --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/otel-dotnet .cursor/skills/otel-dotnet && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "otel-dotnet" agent skill from https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet into .cursor/skills/otel-dotnet/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "otel-dotnet", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ollygarden/opentelemetry-agent-skills.git --path skills/otel-dotnet--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ollygarden/opentelemetry-agent-skills otel-dotnet --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/otel-dotnet .gemini/skills/otel-dotnet && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "otel-dotnet" agent skill from https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet into .gemini/skills/otel-dotnet/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "otel-dotnet", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ollygarden/opentelemetry-agent-skills otel-dotnetInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/otel-dotnet .github/skills/otel-dotnet && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "otel-dotnet" agent skill from https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet into .github/skills/otel-dotnet/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "otel-dotnet", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ollygarden/opentelemetry-agent-skills otel-dotnet --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ollygarden/opentelemetry-agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/otel-dotnet .opencode/skills/otel-dotnet && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "otel-dotnet" agent skill from https://github.com/ollygarden/opentelemetry-agent-skills/tree/main/skills/otel-dotnet into .opencode/skills/otel-dotnet/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "otel-dotnet", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
otel-dotnet- GitHub stars
- 106
- Token cost
- ~988 tokens
- SKILL.md length
- 243 words
- Files
- 6 (incl. references)
- Skills in repo
- 19
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
OpenTelemetry in .NET — DI/builder SDK setup (OpenTelemetry.Extensions.Hosting, AddOpenTelemetry, UseOtlpExporter, OpenTelemetrySdk.Create), native .NET instrumentation APIs (ActivitySource…
- Configuring OpenTelemetry in a .NET
- SKILL.md covers References, Sources of Truth and Cross-References
- Calls gh; reaches raw.githubusercontent.com and opentelemetry.io
- ASP.NET Core service
What it does
Otel Dotnet is an agent skill from ollygarden/opentelemetry-agent-skills. 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…
Its SKILL.md is about 990 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `references/api.md`, `references/breaking-changes.md` and `references/instrumentation-libraries.md`).
It sits in DevOps & Cloud, covering Observability. It works with OpenTelemetry, .NET, ASP.NET Core and C#. The repository describes itself as: Vendor-neutral OpenTelemetry skills for AI coding agents like Claude Code, Cursor, and Codex, grounded in upstream sources. The licence is Apache-2.0.
When your agent uses it
- Configuring OpenTelemetry in a .NET
- ASP.NET Core service
- Setup otel in dotnet
- Dotnet telemetry
Example prompts
- “setup otel in dotnet”
- “dotnet telemetry”
- “.net tracing”
- “/otel-dotnet”
What it can do on your machine
Read from SKILL.md and the folder at commit 12296db. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
gh
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
raw.githubusercontent.comopentelemetry.ionuget.org
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Otel Dotnet loads about 988 tokens when it runs, and up to ~17k if it reads all its reference files. Until then it costs about 206 tokens; SKILL.md has 243 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from ollygarden/opentelemetry-agent-skills at commit 12296db, republished under its Apache-2.0 licence (© ollygarden). 243 words, ~988 tokens.
Download SKILL.mdSave it as
.claude/skills/otel-dotnet/SKILL.md (or your agent's skills folder). This skill also uses 5 other files; get the full folder from GitHub.- name
- otel-dotnet
- description
- 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.
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/ |
Cross-References
- Schema-level facts:
otel-declarative-configskill (language-agnostic YAML schema sources; .NET not yet implemented). - SDK version selection across languages:
otel-sdk-versionsskill. - Semantic conventions lookup:
otel-semantic-conventionsskill.
© ollygarden, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 5 other files (references) in skills/otel-dotnet of ollygarden/opentelemetry-agent-skills.
- SKILL.md
- references/api.md
- references/breaking-changes.md
- references/instrumentation-libraries.md
- references/performance.md
- references/setup.md
Open the folder on GitHubat commit 12296db
Compare with similar skills
Otel Dotnet next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Otel Dotnet this skillollygarden/opentelemetry-agent-skills | 106 | — | ~988 | Automated safety check: Pass | Apache-2.0 | |
| Aspire Service DefaultsAaronontheweb/dotnet-skills | 1.2k | 1 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Loggingcodewithmukesh/dotnet-claude-kit | 756 | — | ~1.6k | Automated safety check: Pass | MIT | |
| Opentelemetry Net InstrumentationAaronontheweb/dotnet-skills | 1.2k | — | ~6.9k | Automated safety check: Pass | MIT | |
| Migrate Dotnet9 To Dotnet10dotnet/skills | 5.6k | 2 repos | ~4.8k | Automated safety check: Pass | MIT | |
| Otel Instrumentationatherio-danp/cde-dotnetcc | 109 | — | ~1.3k | Automated safety check: Notes | None |
Similar skills
Logging
codewithmukesh/dotnet-claude-kit
Observability overview and glue for .NET 10: how the pieces fit together, plus the cross-cutting parts owned here — ASP.NET health check endpoints (/health), correlation IDs, and log-level strategy.
Opentelemetry Net Instrumentation
Aaronontheweb/dotnet-skills
Provides guidance for implementing OpenTelemetry instrumentation in .NET codebases, covering tracing (Activities/Spans), metrics, logs, naming conventions, error handling, performance, SDK setup…
- Official
Migrate Dotnet9 To Dotnet10
dotnet/skills
Migrate a .NET 9 project or solution to .NET 10 and resolve all breaking changes.
Otel Instrumentation
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Add or change OpenTelemetry tracing, metrics, and structured logging in the .NET API (apps/api) — OTLP exporter setup, custom ActivitySource spans, IMeterFactory metrics, log/trace correlation.
- Official
Migrate Dotnet10 To Dotnet11
dotnet/skills
Migrate a .NET 10 project or solution to .NET 11 and resolve all breaking changes.
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Related
Works with
Categories
Questions about Otel Dotnet
What does Otel Dotnet do?
OpenTelemetry in .NET — DI/builder SDK setup (OpenTelemetry.Extensions.Hosting, AddOpenTelemetry, UseOtlpExporter, OpenTelemetrySdk.Create), native .NET instrumentation APIs (ActivitySource…. Otel Dotnet is an agent skill from ollygarden/opentelemetry-agent-skills.Metrics Meter) plus logging abstractions (ILogger), zero-code CLR-profiler agent, contrib instrumentation packages, performance tuning, and breaking-change audits.
When should I use Otel Dotnet?
Otel Dotnet fits situations like: configuring OpenTelemetry in a .NET; ASP.NET Core service; setup otel in dotnet; dotnet telemetry.
How do I install Otel Dotnet in Claude Code?
Run `npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a claude-code`. Or copy the skill folder (skills/otel-dotnet in ollygarden/opentelemetry-agent-skills) into .claude/skills/otel-dotnet in your project. Claude Code loads it when a task matches its description.
How do I install Otel Dotnet in Codex?
Run `npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a codex`. Or copy the skill folder (skills/otel-dotnet in ollygarden/opentelemetry-agent-skills) into .agents/skills/otel-dotnet in your project. Codex loads it when a task matches its description.
Can I use Otel Dotnet in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ollygarden/opentelemetry-agent-skills --skill otel-dotnet -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/otel-dotnet, .gemini/skills/otel-dotnet, .github/skills/otel-dotnet and .opencode/skills/otel-dotnet in your project.
What does Otel Dotnet need to run?
Going by SKILL.md and its folder, Otel Dotnet needs the command-line tools its instructions call (gh).
Does Otel Dotnet access the network?
SKILL.md names 3 domains. In commands or code: raw.githubusercontent.com, opentelemetry.io and nuget.org; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.
Is Otel Dotnet safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Otel Dotnet use?
Otel Dotnet is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Otel Dotnet use?
About 988 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 16k tokens, read only when the agent opens those files.
What are the alternatives to Otel Dotnet?
Skills that share tags, products or a category with Otel Dotnet: Aspire Service Defaults (Aaronontheweb/dotnet-skills, 1.2k stars), Logging (codewithmukesh/dotnet-claude-kit, 756 stars), Opentelemetry Net Instrumentation (Aaronontheweb/dotnet-skills, 1.2k stars) and Migrate Dotnet9 To Dotnet10 (dotnet/skills, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Otel Dotnet?
ollygarden (a GitHub organization) maintains it in ollygarden/opentelemetry-agent-skills, which has 106 GitHub stars. The repository holds 19 skills in this directory. The repository was last updated on October 10, 2026.
Source: ollygarden/opentelemetry-agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.