agentmods.dev

majestic-engineer

majestic-engineer is a plugin for Claude Code from majesticlabs-dev/majestic-marketplace. Its manifest loads nothing; the 54 skills, 1 command, 1 agent it bundles cost 2,049 tokens per session together, scanned A, original, no licence file.

A set of software-engineering workflows for coding agents, independent of any particular programming language. It includes agents, commands, skills, and toolbox presets for carrying out tasks with quality checks.

In plain words
What is it for?
It helps with autonomous task execution across different languages and projects, using the included agents, commands, skills, and tool presets.
Why use it?
It organizes common engineering work into repeatable steps and checks, so an agent can handle tasks with defined quality gates.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

not rated 50repo +1 yesterday A scan tokens not measured custom licence archived

Good fit It helps with autonomous task execution across different languages and projects, using the included agents, commands, skills, and tool presets.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add majesticlabs-dev/majestic-marketplace/plugin install majestic-engineer
View source ↗ majesticlabs-dev/majestic-marketplace
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/majesticlabs-dev/majestic-marketplace

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 majestic-engineer

README.md
[![agentmods](https://agentmods.dev/badge/plugins/majesticlabs-dev/majestic-marketplace/majestic-engineer/github.svg)](https://agentmods.dev/plugins/majesticlabs-dev/majestic-marketplace/majestic-engineer)
Your own site
<a href="https://agentmods.dev/plugins/majesticlabs-dev/majestic-marketplace/majestic-engineer"><img src="https://agentmods.dev/badge/plugins/majesticlabs-dev/majestic-marketplace/majestic-engineer/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 majestic-engineer

Your own site · 80×15
<a href="https://agentmods.dev/plugins/majesticlabs-dev/majestic-marketplace/majestic-engineer"><img src="https://agentmods.dev/badge/plugins/majesticlabs-dev/majestic-marketplace/majestic-engineer.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 54 skills, 1 command, 1 agent cost 2,049 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 unknown No closer match found in the catalogue.
Security

Grade A, and why

majestic-engineer 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 12d 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.

plugins/majestic-engineer/.claude-plugin/plugin.json · 21 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Contents

What it installs

The manifest is a name and a version. 54 skills, 1 command, 1 agent travel with it, and installing the plugin installs all of them — 2,049 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.

  1. 12d ago First seen · 21 lines scan A ac4298975cb6

Subscribe to this mod's changes

majestic-engineer is a plugin published in the GitHub repository majesticlabs-dev/majestic-marketplace (50 stars, last pushed yesterday), with no licence file. 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 2026-08-30.

Building agents
Related

Other plugins, from other repositories

nextjs

Official Next.js skills: adopt and optimize Cache Components, adopt Partial Prefetching, and verify runtime behavior against a running dev server.

vercel/next.js · not measured

themes-example

themes-example. An open-source AI agent that brings the power of Gemini directly into your terminal.

google-gemini/gemini-cli · not measured

claude-plugins-official marketplace

Directory of popular Claude Code extensions including development tools, productivity plugins, and MCP integrations.

anthropics/claude-plugins-official · not measured

humanizer

Rewrite AI-sounding text so it reads naturally without changing what it says.

blader/humanizer · not measured

knowledge-work-plugins marketplace

Plugin marketplace listing 104 plugins: noibu, productivity, enterprise-search, cowork-plugin-management, sales.

anthropics/knowledge-work-plugins · not measured

container

Teaches Claude container's command surface and how it maps to Docker, Lima, Colima, and Podman on macOS.

apple/container · not measured