elixir-pro

elixir-pro is an agent for Claude Code from HermeticOrmus/LibreUIUX-Claude-Code. It costs 53 tokens per session (304 once invoked), scanned A, a copy of elixir-pro, MIT.

An Elixir coding specialist for building concurrent and fault-tolerant applications. Elixir is a programming language designed for systems that handle many tasks and continue running when individual tasks fail.

In plain words
What is it for?
Use it for Elixir refactoring, OTP supervision trees, Phoenix or LiveView applications, distributed systems, database code with Ecto, and performance tuning.
Why use it?
Complex concurrent systems need clear process supervision, predictable state, and ways to find performance problems. It applies Elixir and OTP patterns to structure that work.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it for Elixir refactoring, OTP supervision trees, Phoenix or LiveView applications, distributed systems, database code with Ecto, and performance tuning.

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Install with agentmods
npx agentmods add agents/hermeticormus/libreuiux-claude-code/elixir-pro
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.

Clone the repo
git clone --depth 1 https://github.com/HermeticOrmus/LibreUIUX-Claude-Code

Made for: Claude Code.

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 elixir-pro

README.md
[![agentmods](https://agentmods.dev/badge/agents/hermeticormus/libreuiux-claude-code/elixir-pro/github.svg)](https://agentmods.dev/agents/hermeticormus/libreuiux-claude-code/elixir-pro)
Your own site
<a href="https://agentmods.dev/agents/hermeticormus/libreuiux-claude-code/elixir-pro"><img src="https://agentmods.dev/badge/agents/hermeticormus/libreuiux-claude-code/elixir-pro/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 elixir-pro

Your own site · 80×15
<a href="https://agentmods.dev/agents/hermeticormus/libreuiux-claude-code/elixir-pro"><img src="https://agentmods.dev/badge/agents/hermeticormus/libreuiux-claude-code/elixir-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 304 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 100% copy Near-identical to another mod 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 $0.00053 $0.00304
Opus 5 $0.00026 $0.00152
Sonnet 5 $0.00011 $0.00061
Haiku 4.5 $0.00005 $0.00030

Measured 5d ago against content hash a118b1f8b9ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

elixir-pro 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 5d 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.

Origin

This is a copy

100% identical to elixir-pro — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/functional-programming/agents/elixir-pro.md · 38 lines

What it actually says

You are an Elixir expert specializing in concurrent, fault-tolerant, and distributed systems.

Focus Areas

  • OTP patterns (GenServer, Supervisor, Application)
  • Phoenix framework and LiveView real-time features
  • Ecto for database interactions and changesets
  • Pattern matching and guard clauses
  • Concurrent programming with processes and Tasks
  • Distributed systems with nodes and clustering
  • Performance optimization on the BEAM VM

Approach

  1. Embrace "let it crash" philosophy with proper supervision
  2. Use pattern matching over conditional logic
  3. Design with processes for isolation and concurrency
  4. Leverage immutability for predictable state
  5. Test with ExUnit, focusing on property-based testing
  6. Profile with :observer and :recon for bottlenecks

Output

  • Idiomatic Elixir following community style guide
  • OTP applications with proper supervision trees
  • Phoenix apps with contexts and clean boundaries
  • ExUnit tests with doctests and async where possible
  • Dialyzer specs for type safety
  • Performance benchmarks with Benchee
  • Telemetry instrumentation for observability

Follow Elixir conventions. Design for fault tolerance and horizontal scaling.

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. 5d ago First seen · 38 lines · 53 tokens per session scan A a118b1f8b9ad

Subscribe to this mod's changes

elixir-pro is an agent published in the GitHub repository HermeticOrmus/LibreUIUX-Claude-Code (101 stars, last pushed 3mo ago), licensed MIT. It adds 53 tokens to every session and 304 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to elixir-pro, differing in 0 lines, and is treated as a copy.

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