phoenix

phoenix is a skill for Claude Code, Codex from G1Joshi/Agent-Skills. It costs 20 tokens per session (273 once invoked), scanned A, original, MIT.

A web framework for building Elixir applications, including real-time interfaces with LiveView. LiveView updates server-rendered pages through a persistent browser connection, reducing the need for JavaScript.

In plain words
What is it for?
Use it to build chat applications, live dashboards, and full-stack web apps in Elixir, especially when you want the server to manage much of the interface state.
Why use it?
It provides built-in patterns for handling real-time updates, concurrent users, database access, validation, and messaging between parts of an application.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to build chat applications, live dashboards, and full-stack web apps in Elixir, especially when you want the server to manage much of the interface state.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/g1joshi/agent-skills/phoenix
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add G1Joshi/Agent-Skills --skill phoenix
Clone the repo
git clone --depth 1 https://github.com/G1Joshi/Agent-Skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for phoenix

README.md
[![agentmods](https://agentmods.dev/badge/skills/g1joshi/agent-skills/phoenix/github.svg)](https://agentmods.dev/skills/g1joshi/agent-skills/phoenix)
Your own site
<a href="https://agentmods.dev/skills/g1joshi/agent-skills/phoenix"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/phoenix/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for phoenix

Your own site · 80×15
<a href="https://agentmods.dev/skills/g1joshi/agent-skills/phoenix"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/phoenix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 273 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00020 $0.00273
Opus 5 $0.00010 $0.00137
Sonnet 5 $0.00004 $0.00055
Haiku 4.5 $0.00002 $0.00027

Measured 9d ago against content hash c05f9f621327, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

phoenix scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/frameworks/phoenix/SKILL.md · 45 lines

What it actually says

Phoenix

Phoenix (Elixir) provides real-time scalability (millions of connections). v1.7 + LiveView allows building rich SPAs without writing JavaScript.

When to Use

  • Real-time: Chat apps, live dashboards (Channels).
  • High Concurrency: Leveraging the BEAM VM (Erlang).
  • Low JS: LiveView handles the UI state on the server.

Core Concepts

LiveView

Server-rendered HTML that updates over WebSockets. "The server is the state source".

Ecto

The database wrapper. Using Changeset for validation.

PubSub

Built-in, distributed publish-subscribe system.

Best Practices (2025)

Do:

  • Use Verified Routes: ~p"/users/#{@user}" ensures compile-time link safety.
  • Use Tailwind: Default in 1.7.
  • Use Function Components: HEEx templates with declarative assigns.

Don't:

  • Don't use SPA unless needed: LiveView covers 95% of use cases.

References

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 45 lines · 20 tokens per session scan A c05f9f621327

Subscribe to this mod's changes

phoenix is a skill published in the GitHub repository G1Joshi/Agent-Skills (12 stars, last pushed 7mo ago), licensed MIT. It adds 20 tokens to every session and 273 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

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