It helps you choose and upgrade dependencies using current package, documentation, and security information instead of relying on memory. It can also expose advisories affecting dependencies.

hexpm — Plugin for Claude Code by joshrotenberg/hexpm-mcp

hexpm

hexpm is a plugin for Claude Code from joshrotenberg/hexpm-mcp. Its manifest loads nothing; the 1 skill, 1 hook it bundles cost 62 tokens per session together, scanned A, original, MIT.

A plugin that provides current information from Hex.pm, HexDocs, OSV.dev, and Elixir Toolbox. Hex.pm is the package registry for Elixir and Erlang; HexDocs hosts their package documentation, and OSV.dev lists known vulnerabilities.

In plain words

What is it for?: Use it to inspect package health, read APIs and version documentation, find alternatives, check upgrades, and audit Elixir or Erlang dependencies for vulnerabilities.
Why use it?: It helps you choose and upgrade dependencies using current package, documentation, and security information instead of relying on memory. It can also expose advisories affecting dependencies.

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to inspect package health, read APIs and version documentation, find alternatives, check upgrades, and audit Elixir or Erlang dependencies for vulnerabilities.

Compare 6 plugins from other repositories ↓

Install in Claude Code

/plugin marketplace add joshrotenberg/hexpm-mcp

/plugin install hexpm

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/joshrotenberg/hexpm-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/joshrotenberg/hexpm-mcp/hexpm/github.svg)](https://agentmods.dev/plugins/joshrotenberg/hexpm-mcp/hexpm)

Your own site

<a href="https://agentmods.dev/plugins/joshrotenberg/hexpm-mcp/hexpm"><img src="https://agentmods.dev/badge/plugins/joshrotenberg/hexpm-mcp/hexpm/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/joshrotenberg/hexpm-mcp/hexpm"><img src="https://agentmods.dev/badge/plugins/joshrotenberg/hexpm-mcp/hexpm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill, 1 hook cost 62 tokens a session between them.

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.

Security

Grade A, and why

hexpm 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.

priv/plugin/hexpm/.claude-plugin/plugin.json · 17 lines

What it actually says

{
  "name": "hexpm",
  "description": "hex.pm, HexDocs, OSV.dev and Elixir Toolbox data for choosing, upgrading and auditing Elixir dependencies",
  "author": {
    "name": "Josh Rotenberg"
  },
  "repository": "https://github.com/joshrotenberg/hexpm-mcp",
  "license": "MIT",
  "keywords": [
    "elixir",
    "erlang",
    "hex",
    "dependencies",
    "mcp"
  ]
}

Contents

What it installs

The manifest is a name and a version. 1 skill, 1 hook travel with it, and installing the plugin installs all of them — 62 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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.

9d ago First seen · 17 lines scan A e4dda396b851

Subscribe to this mod's changes

hexpm is a plugin published in the GitHub repository joshrotenberg/hexpm-mcp (2 stars, last pushed 7d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-10-29.

Security elixir erlang hex mcp

hexpm next to 6 plugins from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
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elixirgeorgeguimaraes/claude-code-elixir	Plugin	168	6mo ago	Apache-2.0	A	—	Claude Code