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Agent skill

Tracing

by dxos in dxos/dxos

Architecture and API reference for @dxos/tracing. An agent skill from dxos/dxos.

Custom licenceAuto-check passedDevOps & Cloud

Install Tracing

skills CLI
$ npx skills add dxos/dxos --skill tracing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install dxos/dxos tracing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/dxos/dxos.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/tracing .claude/skills/tracing && rm -rf skills-src

Use ~/.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/

Facts

Skill name
tracing
GitHub stars
525
Token cost
~4.2k tokens
SKILL.md length
991 words
Files
1
Skills in repo
41
Repo updated
First seen
Licence
Custom licence

At a glance

Architecture and API reference for @dxos/tracing. An agent skill from dxos/dxos.

  • Works in 7 steps: Checks if args[0] is a Context — if so,… → Calls… → Derives a child Context with the new… → …
  • Working with TracingBackend
  • SKILL.md covers Architecture, TracingBackend Interface, RemoteSpan and How the @trace.span()…, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Tracing is an agent skill from dxos/dxos. Architecture and API reference for @dxos/tracing. Use when working with TracingBackend, TRACEPROCESSOR, @trace.resource(), @trace.span(), @trace.info(), metrics counters, diagnostics, ContextRpcCodec, tracing-types.ts, trace-processor.ts, or api.ts.

Its SKILL.md is about 4.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in DevOps & Cloud, covering Observability. It works with OpenTelemetry. The repository describes itself as: TypeScript implementation of the DXOS protocols, SDK, toolchain and Composer.

When your agent uses it

  • Working with TracingBackend
  • @trace.resource()
  • Metrics counters
  • ContextRpcCodec

Example prompts

  • “/tracing”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Checks if args[0] is a Context — if so, reads TraceContextData from its TRACE_SPAN_ATTRIBUTE.
  2. Calls TRACE_PROCESSOR.tracingBackend?.startSpan({ name, parentContext, ... }).
  3. Derives a child Context with the new span's TraceContextData on TRACE_SPAN_ATTRIBUTE.
  4. Replaces args[0] with the child context before calling the method body.
  5. On error: calls remoteSpan.setError(err) before rethrowing.
  6. Calls remoteSpan.end() in a finally block.
  7. If showInBrowserTimeline, also calls performance.measure() in the finally block.

What it can do on your machine

Read from SKILL.md and the folder at commit 2e6b92a. 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

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    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

Tracing loads about 4.2k tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 991 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~65
When it runs · the whole SKILL.md, loaded when a task matches
~4.2k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 991 words (~4,197 tokens).

“The @dxos/tracing package provides resource tracking, span creation, metrics, and diagnostics for DXOS. It defines a backend-agnostic TracingBackend interface — the @dxos/observability package provides the concrete OTEL implementation.”

— opening of SKILL.md by dxos, Custom licence
name
tracing

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/tracing of dxos/dxos.

Open the folder on GitHubat commit 2e6b92a

Compare with similar skills

Tracing 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.

Tracing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Tracing this skilldxos/dxos525—~4.2kAutomated safety check: PassCustom licence
Motel Debugkitlangton/motel298—~2.2kAutomated safety check: PassMIT
Tempsgotempsh/temps828—~2kAutomated safety check: PassApache-2.0
Axiom Metrics Queryopenclaw/clawhub9.5k—~2.6kAutomated safety check: PassMIT
UModel Root Cause Analysisalibaba/UnifiedModel415—~1.9kAutomated safety check: PassCustom licence
Agent Kill Switchvivekchand/clawmetry426—~1.1kAutomated safety check: PassMIT

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Works with

Categories

Questions about Tracing

What does Tracing do?

Architecture and API reference for @dxos/tracing. An agent skill from dxos/dxos. Tracing is an agent skill from dxos/dxos. Architecture and API reference for @dxos/tracing.

When should I use Tracing?

Tracing fits situations like: working with TracingBackend; @trace.resource(); metrics counters; contextRpcCodec.

How do I install Tracing in Claude Code?

Run `npx skills add dxos/dxos --skill tracing -a claude-code`. Or copy the skill folder (.agents/skills/tracing in dxos/dxos) into .claude/skills/tracing in your project. Claude Code loads it when a task matches its description.

How do I install Tracing in Codex?

Run `npx skills add dxos/dxos --skill tracing -a codex`. Or copy the skill folder (.agents/skills/tracing in dxos/dxos) into .agents/skills/tracing in your project. Codex loads it when a task matches its description.

Can I use Tracing 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 dxos/dxos --skill tracing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/tracing, .gemini/skills/tracing, .github/skills/tracing and .opencode/skills/tracing in your project.

What does Tracing need to run?

SKILL.md names no scripts, command-line tools or credentials: Tracing is instructions for the agent only.

Does Tracing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Tracing 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 Tracing use?

Tracing has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Tracing use?

About 4.2k tokens (SKILL.md is roughly 17k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Tracing?

Skills that share tags, products or a category with Tracing: Motel Debug (kitlangton/motel, 298 stars), Temps (gotempsh/temps, 828 stars), Axiom Metrics Query (openclaw/clawhub, 9.5k stars) and UModel Root Cause Analysis (alibaba/UnifiedModel, 415 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Tracing?

dxos (a GitHub organization) maintains it in dxos/dxos, which has 525 GitHub stars. The repository holds 41 skills in this directory. The repository was last updated on October 9, 2026.

Source: dxos/dxos on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.