mage

mage is a plugin for Claude Code from davisjam/model-based-agentic-software-engineering. Its manifest loads nothing; the 3 skills it bundles cost 773 tokens per session together, scanned A, original, MIT.

A plugin containing three skills for governing, operating, and communicating about an AI-agent engineering repository. It provides guidance for repository safeguards, day-to-day operations, and clear technical documents and diagrams.

In plain words
What is it for?
Use it to audit or add repository guardrails, operate an agent fleet, and write items such as design documents, runbooks, handoffs, READMEs, tutorials, and API references.
Why use it?
It brings related instructions for controls, operations, and engineering communication into one installable package. This helps keep the repository safer to run and easier for engineers to understand.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to audit or add repository guardrails, operate an agent fleet, and write items such as design documents, runbooks, handoffs, READMEs, tutorials, and API references.

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Install in Claude Code
/plugin marketplace add davisjam/model-based-agentic-software-engineering
/plugin install mage
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/davisjam/model-based-agentic-software-engineering

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 mage

README.md
[![agentmods](https://agentmods.dev/badge/plugins/davisjam/model-based-agentic-software-engineering/mage/github.svg)](https://agentmods.dev/plugins/davisjam/model-based-agentic-software-engineering/mage)
Your own site
<a href="https://agentmods.dev/plugins/davisjam/model-based-agentic-software-engineering/mage"><img src="https://agentmods.dev/badge/plugins/davisjam/model-based-agentic-software-engineering/mage/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 mage

Your own site · 80×15
<a href="https://agentmods.dev/plugins/davisjam/model-based-agentic-software-engineering/mage"><img src="https://agentmods.dev/badge/plugins/davisjam/model-based-agentic-software-engineering/mage.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 3 skills cost 773 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

mage 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 1mo 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.

plugin/mage/.claude-plugin/plugin.json · 22 lines

What it actually says

{
  "name": "mage",
  "description": "The mage toolkit — the Davis AI-First Engineering Method plus the control catalogue, packaged as installable skills. Ships three partner skills: self-governance (harden — audit a repo for missing guardrails, or convert a recurring failure into a durable control), self-operations (operate — run the agent-fleet substrate; route a break to its fix, and escalate a recurring one to self-governance), and self-communicate (communicate — write and diagram engineer-facing docs well: rhetoric, the Diátaxis register, a house lexicon, and a prose+diagram audit).",
  "version": "0.1.0",
  "license": "MIT",
  "author": {
    "name": "James C. Davis, PhD",
    "email": "[email protected]"
  },
  "homepage": "https://davisjam.github.io/agent-governance-mechanisms/",
  "repository": "https://github.com/davisjam/agent-governance-mechanisms",
  "keywords": [
    "governance",
    "agents",
    "ai-engineering",
    "linting",
    "code-review",
    "guardrails",
    "mbse"
  ]
}
Contents

What it installs

The manifest is a name and a version. 3 skills travel with it, and installing the plugin installs all of them — 773 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. 1mo ago First seen · 22 lines scan A 810b84d4f2d0

Subscribe to this mod's changes

mage is a plugin published in the GitHub repository davisjam/model-based-agentic-software-engineering (25 stars, last pushed yesterday), 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 2026-08-30.