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hexpm

hexpm is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from joshrotenberg/hexpm-mcp. Its token cost is not measured, scanned A, original, MIT.

A local MCP server configuration launched with the Elixir Mix tool. The available details do not say what information or actions the server provides.

In plain words
What is it for?
Use it to run the Hexpm server locally when you already know which of its tools your project needs.
Why use it?
It supplies the command needed to start the server, but its practical use cannot be determined from the description.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it. Also seen: listed in a Claude config.

One of 2 entries in .mcp.json — they are configured in one file and arrive together.

not rated 2 1mo ago A scan tokens not measured original MIT
View the source file joshrotenberg/hexpm-mcp hexpm-mcp.hexdocs.pm
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.

agentmods
npx agentmods add mcp/joshrotenberg/hexpm-mcp/hexpm
Clone the repo
git clone --depth 1 https://github.com/joshrotenberg/hexpm-mcp

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

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 hexpm

README.md
[![agentmods](https://agentmods.dev/badge/mcp/joshrotenberg/hexpm-mcp/hexpm.svg)](https://agentmods.dev/mcp/joshrotenberg/hexpm-mcp/hexpm)
Your own site
<a href="https://agentmods.dev/mcp/joshrotenberg/hexpm-mcp/hexpm"><img src="https://agentmods.dev/badge/mcp/joshrotenberg/hexpm-mcp/hexpm.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
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 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.

.mcp.json · 12 lines

What it actually says

{
  "hexpm": {
    "command": "mix",
    "args": [
      "run",
      "--no-halt",
      "--",
      "--transport",
      "stdio"
    ]
  }
}
Same file

What else .mcp.json configures

This page is one entry in a file that holds 2. Installing the file brings all of them; each is measured and scanned on its own page.

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 · 12 lines scan A 4ee29945a11b

Subscribe to this mod's changes

hexpm is an MCP server published in the GitHub repository joshrotenberg/hexpm-mcp (2 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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 2026-08-31.

elixirerlanghexmcp
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