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Elixir Antipatterns

Checked
gentleman-programming·vlatest·backend·MIT

Identifies common Elixir coding mistakes (antipatterns) to improve code quality and prevent future issues.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add gentleman-programming/gentleman-skills --skill elixir-antipatterns -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

gentleman-programming

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned gentleman-programming/gentleman-skills at c8036a3789.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
c8036a3789
Manifest
community/elixir-antipatterns/SKILL.md
Scanned
3 files, 1,019 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill enables AI agents to identify, analyze, and refactor code containing common Elixir programming antipatterns. It helps maintain code quality by detecting inefficient structures like excessive use of Enum functions or improper state management before they cause performance issues.

When to use it

  • Reviewing legacy Elixir codebases to modernize outdated patterns.
  • Validating new features during the development cycle to prevent technical debt.
  • Auditing team pull requests for adherence to best practices and clean code principles.
  • Preparing production systems for scaling by eliminating known performance bottlenecks.

Key capabilities

  • Detects inefficient use of Enum module functions (e.g., chaining multiple passes).
  • Identifies improper usage of Task.async! leading to blocking behavior.
  • Flags excessive recursion that could cause stack overflows.
  • Recognizes misuse of Process.registered? for state tracking instead of proper supervision trees.

Example prompts

  • "Scan this module and list all instances where Enum.map is used unnecessarily."
  • "Refactor the following function to remove the antipattern of blocking on async tasks."
  • "Identify any code patterns in this file that violate Elixir's 'Eager is better than lazy' principle."

Tips & gotchas

Ensure your codebase includes standard library modules, as the skill relies on recognizing specific idiomatic structures. While effective for common issues, it may not catch every niche architectural flaw unique to complex domain logic.