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Agent skill

Phx Intro

by oliver-kriska in oliver-kriska/claude-elixir-phoenix

Walk through the Elixir/Phoenix plugin commands, workflow; Use when a new user wants to learn what the plugin offers…

MITAuto-check passedAI & LLM Engineering

Install Phx Intro

skills CLI
$ npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-intro -a claude-code

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

GitHub CLI
$ gh skill install oliver-kriska/claude-elixir-phoenix phx-intro --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/oliver-kriska/claude-elixir-phoenix.git skills-src && mkdir -p .claude/skills && cp -r skills-src/targets/codex/skills/phx-intro .claude/skills/phx-intro && 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
phx-intro
GitHub stars
565
Token cost
~546 tokens
SKILL.md length
263 words
Files
2 (incl. references)
Skills in repo
109
Repo updated
First seen
Licence
MIT

At a glance

Walk through the Elixir/Phoenix plugin commands, workflow; Use when a new user wants to learn what the plugin offers…

  • Works in 4 steps: Read references/tutorial-content.md for… → Parse $ARGUMENTS for --section N flag… → If --section N specified, jump directly… → …
  • A new user wants to learn what the plugin offers…
  • SKILL.md covers Arguments, Execution Flow, Iron Laws and Closing Message, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Phx Intro is an agent skill from oliver-kriska/claude-elixir-phoenix. Walk through the Elixir/Phoenix plugin commands, workflow; Use when a new user wants to learn what the plugin offers…

Its SKILL.md is about 550 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/tutorial-content.md`).

It sits in AI & LLM Engineering, covering LLM observability. It works with Elixir. The repository describes itself as: Claude Code plugin for Elixir/Phoenix/LiveView — 26 specialist agents, Iron Laws enforcement, and Tidewave MCP integration. Plan features with parallel research agents, execute… The licence is MIT.

When your agent uses it

  • A new user wants to learn what the plugin offers…
  • Tasks that involve LLM observability

Example prompts

  • “/phx-intro”

Workflow steps

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

  1. Read references/tutorial-content.md for all section content
  2. Parse $ARGUMENTS for --section N flag (1-6)
  3. If --section N specified, jump directly to that section
  4. Otherwise start from Section 1

What it can do on your machine

Read from SKILL.md and the folder at commit 9767a82. 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.

    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

Phx Intro loads about 546 tokens when it runs, and up to ~5.1k if it reads all its reference files. Until then it costs about 32 tokens; SKILL.md has 263 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~32
When it runs · the whole SKILL.md, loaded when a task matches
~546
With references · SKILL.md plus every file in references/, read only if the agent opens them
~5.1k

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 oliver-kriska/claude-elixir-phoenix at commit 9767a82, republished under its MIT licence (© oliver-kriska). 263 words, ~546 tokens.

Download SKILL.mdSave it as .claude/skills/phx-intro/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
phx-intro
description
Walk through the Elixir/Phoenix plugin commands, workflow; Use when a new user wants to learn what the plugin offers…

Plugin Introduction Tutorial

Interactive walkthrough of the Elixir/Phoenix plugin in 6 sections (~5 min).

Arguments

  • $ARGUMENTS may contain --section N to jump to a specific section (1-6)
  • No arguments = start from Section 1

Execution Flow

  1. Read references/tutorial-content.md for all section content
  2. Parse $ARGUMENTS for --section N flag (1-6)
  3. If --section N specified, jump directly to that section
  4. Otherwise start from Section 1
Section Presentation Loop

For each section:

  1. Present the section content completely — every paragraph, table, and code block from the reference file — as visible response text emitted BEFORE the AskUserQuestion call; content composed only in thinking is invisible to the user
  2. After presenting, use AskUserQuestion with options:
    • If sections remain: "Next: [next section title]", "Skip to Cheat Sheet", "Stop here"
    • If on final section (6): no question needed, end with closing message
Section Titles
NTitle
1Welcome
2Core Workflow Commands
3Knowledge & Safety Net
4Hooks & Behavioral Rules
5Init, Review & Gaps
6Cheat Sheet & Next Steps

Iron Laws

  1. ONE section at a time — never dump all content at once
  2. User controls pace — always offer to stop between sections
  3. Clean formatting — use tables and code blocks, not walls of text
  4. NEVER skip the user's questions — tutorial is interactive, not a monologue; if the user asks a question mid-section, answer it before continuing

Closing Message

After Section 6 (or when user stops):

You're all set! Try `$elixir-phoenix:phx-plan` with your next feature to see the workflow in action.
Run `$elixir-phoenix:phx-intro --section N` anytime to revisit a specific section.

Notes

  • This runs in main conversation context (not a subagent)
  • Reference file is readable since skill runs in user's session
  • Keep tone welcoming but concise — developers don't want fluff

© oliver-kriska, MIT. 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 1 other file (references) in targets/codex/skills/phx-intro of oliver-kriska/claude-elixir-phoenix.

  • SKILL.md
  • references/tutorial-content.md

Open the folder on GitHubat commit 9767a82

Compare with similar skills

Phx Intro 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.

Phx Intro compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Phx Intro this skilloliver-kriska/claude-elixir-phoenix565—~546Automated safety check: PassMIT
Elixir Architectmaxim-ist/elixir-architect145—~7.6kAutomated safety check: PassMIT
Phoenix Frameworkpodlove/radiator136—~562Automated safety check: PassMIT
Elixir Expertpass-agent/loomkin1811 repos~796Automated safety check: PassMIT
Usage Rulesbradleygolden/claude-marketplace-elixir176—~4.9kAutomated safety check: NotesMIT
Elixir Prodavila7/claude-code-templates33k8 repos~486Automated safety check: PassMIT

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Works with

Categories

Questions about Phx Intro

What does Phx Intro do?

Walk through the Elixir/Phoenix plugin commands, workflow; Use when a new user wants to learn what the plugin offers…. Phx Intro is an agent skill from oliver-kriska/claude-elixir-phoenix.

When should I use Phx Intro?

Phx Intro fits situations like: A new user wants to learn what the plugin offers…; tasks that involve LLM observability.

How do I install Phx Intro in Claude Code?

Run `npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-intro -a claude-code`. Or copy the skill folder (targets/codex/skills/phx-intro in oliver-kriska/claude-elixir-phoenix) into .claude/skills/phx-intro in your project. Claude Code loads it when a task matches its description.

How do I install Phx Intro in Codex?

Run `npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-intro -a codex`. Or copy the skill folder (targets/codex/skills/phx-intro in oliver-kriska/claude-elixir-phoenix) into .agents/skills/phx-intro in your project. Codex loads it when a task matches its description.

Can I use Phx Intro 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 oliver-kriska/claude-elixir-phoenix --skill phx-intro -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/phx-intro, .gemini/skills/phx-intro, .github/skills/phx-intro and .opencode/skills/phx-intro in your project.

What does Phx Intro need to run?

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

Does Phx Intro 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 Phx Intro 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 Phx Intro use?

Phx Intro is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Phx Intro use?

About 546 tokens (SKILL.md is roughly 2.2k 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 4.6k tokens, read only when the agent opens those files.

What are the alternatives to Phx Intro?

Skills that share tags, products or a category with Phx Intro: Elixir Architect (maxim-ist/elixir-architect, 145 stars), Phoenix Framework (podlove/radiator, 136 stars), Elixir Expert (pass-agent/loomkin, 181 stars) and Usage Rules (bradleygolden/claude-marketplace-elixir, 176 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Phx Intro?

oliver-kriska (a GitHub user) maintains it in oliver-kriska/claude-elixir-phoenix, which has 565 GitHub stars. The repository holds 109 skills in this directory. The repository was last updated on October 5, 2026.

Source: oliver-kriska/claude-elixir-phoenix on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.