Agent skill

Phx Examples

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

Provide Phoenix, LiveView, Ecto, OTP, or Oban examples. An agent skill from oliver-kriska/claude-elixir-phoenix.

MITAuto-check passedAI & LLM Engineering

Install Phx Examples

skills CLI

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

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

GitHub CLI

$ gh skill install oliver-kriska/claude-elixir-phoenix phx-examples --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/pi/skills/phx-examples .claude/skills/phx-examples && 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/

Paste into Claude Code

Install the "phx-examples" agent skill from https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples into .claude/skills/phx-examples/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phx-examples", 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

$skill-installer install https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples

Type 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.

skills CLI

$ npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-examples -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install oliver-kriska/claude-elixir-phoenix phx-examples --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/oliver-kriska/claude-elixir-phoenix.git skills-src && mkdir -p .agents/skills && cp -r skills-src/targets/pi/skills/phx-examples .agents/skills/phx-examples && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "phx-examples" agent skill from https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples into .agents/skills/phx-examples/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phx-examples", 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.

skills CLI

$ npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-examples -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install oliver-kriska/claude-elixir-phoenix phx-examples --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/oliver-kriska/claude-elixir-phoenix.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/targets/pi/skills/phx-examples .cursor/skills/phx-examples && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "phx-examples" agent skill from https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples into .cursor/skills/phx-examples/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phx-examples", 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

$ gemini skills install https://github.com/oliver-kriska/claude-elixir-phoenix.git --path targets/pi/skills/phx-examples

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-examples -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install oliver-kriska/claude-elixir-phoenix phx-examples --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/oliver-kriska/claude-elixir-phoenix.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/targets/pi/skills/phx-examples .gemini/skills/phx-examples && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "phx-examples" agent skill from https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples into .gemini/skills/phx-examples/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phx-examples", 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.

GitHub CLI

$ gh skill install oliver-kriska/claude-elixir-phoenix phx-examples

Installs 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).

skills CLI

$ npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-examples -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/oliver-kriska/claude-elixir-phoenix.git skills-src && mkdir -p .github/skills && cp -r skills-src/targets/pi/skills/phx-examples .github/skills/phx-examples && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "phx-examples" agent skill from https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples into .github/skills/phx-examples/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phx-examples", 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.

skills CLI

$ npx skills add oliver-kriska/claude-elixir-phoenix --skill phx-examples -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install oliver-kriska/claude-elixir-phoenix phx-examples --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/oliver-kriska/claude-elixir-phoenix.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/targets/pi/skills/phx-examples .opencode/skills/phx-examples && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "phx-examples" agent skill from https://github.com/oliver-kriska/claude-elixir-phoenix/tree/main/targets/pi/skills/phx-examples into .opencode/skills/phx-examples/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phx-examples", 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: phx-examples
GitHub stars: 565
Token cost: ~1k tokens
SKILL.md length: 187 words
Files: 1
Skills in repo: 111
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Provide Phoenix, LiveView, Ecto, OTP, or Oban examples. An agent skill from oliver-kriska/claude-elixir-phoenix.

Asked for sample code
SKILL.md covers Official Phoenix Guides…, Plugin-Specific Patterns, Example Workflows and When to Use Official Docs vs…
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
A proper implementation

What it does

Phx Examples is an agent skill from oliver-kriska/claude-elixir-phoenix. Provide Phoenix, LiveView, Ecto, OTP, or Oban examples. Use when asked for sample code, a walkthrough, a proper implementation, or expected workflow output. Pair with domain skills. NOT for debugging, direct changes, best-practice advice, or audits.

Its SKILL.md is about 1k 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 AI & LLM Engineering, covering LLM observability. 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

Asked for sample code
A proper implementation
Expected workflow output

Example prompts

“/phx-examples”

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 (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- hexdocs.pm
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 Examples loads about 1k tokens when it runs. Until then it costs about 66 tokens; SKILL.md has 187 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~66
When it runs · the whole SKILL.md, loaded when a task matches: ~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). 187 words, ~1,011 tokens.

Download SKILL.mdSave it as .claude/skills/phx-examples/SKILL.md (or your agent's skills folder).

name: phx-examples
description: Provide Phoenix, LiveView, Ecto, OTP, or Oban examples. Use when asked for sample code, a walkthrough, a proper implementation, or expected workflow output. Pair with domain skills. NOT for debugging, direct changes, best-practice advice, or audits.

Examples & Walkthroughs

Official Phoenix Guides (Reference)

For standard implementation patterns, always check official guides first:

Topic	Guide
Contexts	hexdocs.pm/phoenix/contexts
Ecto Basics	hexdocs.pm/phoenix/ecto
LiveView	hexdocs.pm/phoenix_live_view
Authentication	mix phx.gen.auth
Channels	hexdocs.pm/phoenix/channels
Testing	hexdocs.pm/phoenix/testing
Deployment	hexdocs.pm/phoenix/deployment

Plugin-Specific Patterns

Patterns NOT in official guides (unique to this plugin):

Tidewave Integration Workflow

text

# Requires connected mcp__tidewave__* tools

# Get exact docs for YOUR dependency versions
mcp__tidewave__get_docs "Ecto.Query"

# Execute code in running app
mcp__tidewave__project_eval "MyApp.Accounts.list_users() |> length()"

# Query database directly
mcp__tidewave__execute_sql_query "SELECT count(*) FROM users"

Multi-Agent Review Workflow

bash

# 1. Plan feature with specialist agents
/skill:phx-plan Add user avatars with S3 upload

# 2. After implementation, review with multiple perspectives
/skill:phx-review lib/my_app/accounts.ex  # Elixir idioms
# Security analyzer runs automatically on auth code

# 3. Before deployment
# Deployment validator checks production readiness

Iron Laws Enforcement

This plugin enforces non-negotiable rules across all agents:

Elixir Idioms:

NO process without runtime reason
Messages are copied (keep small)
Changesets for external data

LiveView:

NEVER query DB in mount
ALWAYS use streams for lists
RE-AUTHORIZE in every handle_event

Oban:

Jobs MUST be idempotent
ALWAYS handle {:error, _} returns
Use unique keys for deduplication

Security:

Validate at boundaries
Never interpolate user input in queries
Authorize everywhere (not just mount)

Example Workflows

Bug Investigation

bash

# 1. Start with obvious checks
/skill:phx-investigate Login failing after password reset

# 2. Agent checks Ralph Wiggum list:
#    - File saved? Compiled? Migrated?
#    - Atom vs string keys?
#    - Data preloaded?

# 3. If complex, escalate to Ralph Wiggum Loop (if installed)
/ralph-loop:ralph-loop "Fix login tests. Output <promise>DONE</promise> when green."

Feature Planning

bash

# 1. Research phase
/skill:phx-research Oban unique jobs best practices

# 2. Plan with context analysis
/skill:phx-plan Add daily digest email job

# 3. Agents coordinate:
#    - hex-library-researcher evaluates deps
#    - oban-specialist designs worker
#    - ecto-schema-designer plans data model

Security Audit

bash

# 1. Run security analyzer on auth code
/skill:phx-review lib/my_app_web/controllers/session_controller.ex

# 2. Check for common vulnerabilities:
#    - SQL injection (parameterized queries?)
#    - XSS (proper escaping?)
#    - CSRF (tokens present?)
#    - Authorization (re-checked in events?)

When to Use Official Docs vs Plugin

Situation	Use
"How do I create a context?"	Official Phoenix guides
"Is my context design idiomatic?"	Plugin's `/skill:phx-review`
"How do I add LiveView?"	Official LiveView guides
"Does my LiveView have memory issues?"	Plugin's Iron Laws
"How do I deploy to Fly.io?"	Official deployment guide
"Is my release config production-ready?"	Plugin's deployment-validator

Files

Just SKILL.md in targets/pi/skills/phx-examples of oliver-kriska/claude-elixir-phoenix.

Open the folder on GitHubat commit 9767a82

Compare with similar skills

Phx Examples 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 Examples compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Phx Examples this skilloliver-kriska/claude-elixir-phoenix	565	—	~1k	Automated safety check: Pass	MIT	4 days ago
BenchAlphaLab-USTC/OhMyCode	131	—	~941	Automated safety check: Pass	MIT	6 mo ago
Langfuse Integration Pagelangfuse/langfuse-docs	247	—	~3.7k	Automated safety check: Pass	MIT	today
Langfuselangfuse/skills	300	—	~2.1k	Automated safety check: Notes	MIT	8 days ago
Analyzing Claude Code Sessionsamd/gaia	1.6k	—	~2.3k	Automated safety check: Pass	MIT	yesterday
Dev BumpNetis/heron	102	—	~983	Automated safety check: Pass	Apache-2.0	5 days ago

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Questions about Phx Examples

What does Phx Examples do?

Provide Phoenix, LiveView, Ecto, OTP, or Oban examples. An agent skill from oliver-kriska/claude-elixir-phoenix. Phx Examples is an agent skill from oliver-kriska/claude-elixir-phoenix. Provide Phoenix, LiveView, Ecto, OTP, or Oban examples.

When should I use Phx Examples?

Phx Examples fits situations like: asked for sample code; A proper implementation; expected workflow output.

How do I install Phx Examples in Claude Code?

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

How do I install Phx Examples in Codex?

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

Can I use Phx Examples 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-examples -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-examples, .gemini/skills/phx-examples, .github/skills/phx-examples and .opencode/skills/phx-examples in your project.

What does Phx Examples need to run?

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

Does Phx Examples access the network?

SKILL.md names 1 domain. As links in the text: hexdocs.pm. This is read from the text; nothing was executed.

Is Phx Examples 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 Examples use?

Phx Examples 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 Examples use?

About 1k 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.

What are the alternatives to Phx Examples?

Skills that share tags, products or a category with Phx Examples: Bench (AlphaLab-USTC/OhMyCode, 131 stars), Langfuse Integration Page (langfuse/langfuse-docs, 247 stars), Langfuse (langfuse/skills, 300 stars) and Analyzing Claude Code Sessions (amd/gaia, 1.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Phx Examples?

oliver-kriska (a GitHub user) maintains it in oliver-kriska/claude-elixir-phoenix, which has 565 GitHub stars. The repository holds 111 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.

Install Phx Examples

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Examples & Walkthroughs

Official Phoenix Guides (Reference)

Plugin-Specific Patterns

Tidewave Integration Workflow

Multi-Agent Review Workflow

Iron Laws Enforcement

Example Workflows

Bug Investigation

Feature Planning

Security Audit

When to Use Official Docs vs Plugin

Files

Compare with similar skills

Similar skills

More from oliver-kriska/claude-elixir-phoenix

Related

Questions about Phx Examples