Agent skill

Performance Engineer

by Dokhacgiakhoa in Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI

Expert performance engineer specializing in modern observability.

Custom licenceAuto-check passedDevOps & Cloud

Install Performance Engineer

skills CLI
$ npx skills add Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill performance-engineer -a claude-code

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

GitHub CLI
$ gh skill install Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI performance-engineer --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/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agent/skills/performance-engineer .claude/skills/performance-engineer && 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
performance-engineer
GitHub stars
508
Token cost
~743 tokens
SKILL.md length
299 words
Files
3 (incl. scripts)
Skills in repo
27
Repo updated
First seen
Licence
Custom licence

At a glance

Expert performance engineer specializing in modern observability.

  • Works in 5 steps: Core Web Vitals & Frontend Speed → Backend & Database Optimization → Modern Observability (OpenTelemetry) → …
  • Tasks that involve Site reliability engineering
  • SKILL.md covers 📑 Internal Menu, 1. Core Web Vitals & Frontend…, 2. Backend & Database… and 3. Modern Observability…, plus 3 more sections
  • Runs JavaScript and Python scripts from its folder; calls python

What it does

Performance Engineer is an agent skill from Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI. Expert performance engineer specializing in modern observability.

Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including scripts (for example `scripts/lighthouse_check.js` and `scripts/lighthouse_check.py`).

It sits in DevOps & Cloud, covering Site reliability engineering, Observability and Load testing. It works with OpenTelemetry.

When your agent uses it

  • Tasks that involve Site reliability engineering
  • Tasks that involve Observability
  • Tasks that involve Load testing

Example prompts

  • “/performance-engineer”

Requirements

  • Python 3
  • Node.js

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Core Web Vitals & Frontend Speed
  2. Backend & Database Optimization
  3. Modern Observability (OpenTelemetry)
  4. Load Testing & Stress Validation
  5. Reliability (SLO/SLI) & Error Budgets

What it can do on your machine

Read from SKILL.md and the folder at commit c4a059b. 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

    Ships 2 files in scripts/ (JavaScript and Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python

    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

Performance Engineer loads about 743 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 299 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~22
When it runs · the whole SKILL.md, loaded when a task matches
~743

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); the scripts in this folder 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 299 words (~743 tokens).

“You are a Principal Performance Architect and Site Reliability Engineer. Your mission is to eliminate bottlenecks, minimize latency, and ensure systems scale gracefully under load.”

— opening of SKILL.md by Dokhacgiakhoa, Custom licence
name
performance-engineer
category
performance
version
4.1.0-fractal
layer
master-skill

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (scripts) in .agent/skills/performance-engineer of Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI.

  • SKILL.md
  • scripts/lighthouse_check.js
  • scripts/lighthouse_check.py

Open the folder on GitHubat commit c4a059b

Compare with similar skills

Performance Engineer 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.

Performance Engineer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Performance Engineer this skillDokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI508—~743Automated safety check: PassCustom licence
Tempsgotempsh/temps828—~2kAutomated safety check: PassApache-2.0
Monitoring Observabilityahmedasmar/devops-claude-skills203—~3.9kAutomated safety check: PassNone
Error HandlerEliasOulkadi/shokunin114—~3.6kAutomated safety check: NotesMIT
Monitoring ExpertJeffallan/claude-skills12k—~1.6kAutomated safety check: PassMIT
Coralogix Docscoralogix/cx-cli121—~1.2kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about Performance Engineer

What does Performance Engineer do?

Expert performance engineer specializing in modern observability. Performance Engineer is an agent skill from Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI. Expert performance engineer specializing in modern observability.

When should I use Performance Engineer?

Performance Engineer fits situations like: tasks that involve Site reliability engineering; tasks that involve Observability; tasks that involve Load testing.

How do I install Performance Engineer in Claude Code?

Run `npx skills add Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill performance-engineer -a claude-code`. Or copy the skill folder (.agent/skills/performance-engineer in Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI) into .claude/skills/performance-engineer in your project. Claude Code loads it when a task matches its description.

How do I install Performance Engineer in Codex?

Run `npx skills add Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill performance-engineer -a codex`. Or copy the skill folder (.agent/skills/performance-engineer in Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI) into .agents/skills/performance-engineer in your project. Codex loads it when a task matches its description.

Can I use Performance Engineer 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 Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill performance-engineer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/performance-engineer, .gemini/skills/performance-engineer, .github/skills/performance-engineer and .opencode/skills/performance-engineer in your project.

What does Performance Engineer need to run?

Going by SKILL.md and its folder, Performance Engineer needs JavaScript and Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3; Node.js.

Does Performance Engineer 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 Performance Engineer 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Performance Engineer use?

Performance Engineer 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 Performance Engineer use?

About 743 tokens (SKILL.md is roughly 3k 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 Performance Engineer?

Skills that share tags, products or a category with Performance Engineer: Temps (gotempsh/temps, 828 stars), Monitoring Observability (ahmedasmar/devops-claude-skills, 203 stars), Error Handler (EliasOulkadi/shokunin, 114 stars) and Monitoring Expert (Jeffallan/claude-skills, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Performance Engineer?

Dokhacgiakhoa (a GitHub user) maintains it in Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI, which has 508 GitHub stars. The repository holds 27 skills in this directory. The repository was last updated on June 11, 2026.

Source: Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.