domain-audit

domain-audit is a command for coding agents from andkirby/markdown-ticket. It costs 0 tokens per session (6,363 once invoked), scanned A, original, MIT.

A diagnostic command for examining existing code against domain-driven design, a way to organize software around the business concepts it represents, and against structural problems.

In plain words
What is it for?
Use it to audit selected files or directories before refactoring, when business logic seems poorly organized, or when code feels rigid and overly connected.
Why use it?
It reveals scattered validation, tight coupling, weak boundaries, and other issues that can make code harder to change and keep consistent.

Command

Part of the mdt plugin — 1 skill, 16 commands, 5 agents, 1 hook shipped together

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 commands/andkirby/markdown-ticket/domain-audit
Clone the repo
git clone --depth 1 https://github.com/andkirby/markdown-ticket

Or install mdt, the plugin that ships this one along with the rest of its 1 skill, 16 commands, 5 agents, 1 hook.

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 domain-audit

README.md
[![agentmods](https://agentmods.dev/badge/commands/andkirby/markdown-ticket/domain-audit.svg)](https://agentmods.dev/commands/andkirby/markdown-ticket/domain-audit)
Your own site
<a href="https://agentmods.dev/commands/andkirby/markdown-ticket/domain-audit"><img src="https://agentmods.dev/badge/commands/andkirby/markdown-ticket/domain-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,363 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.06363
Opus 5 $0.00000 $0.03181
Sonnet 5 $0.00000 $0.01273
Haiku 4.5 $0.00000 $0.00636

Measured 5d ago against content hash ebf06841cf46, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

domain-audit 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.

prompts/mdt/commands/domain-audit.md · 924 lines

How it starts

The opening of the file, as written. The whole thing — 924 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MDT Domain Audit (v2)

Analyze existing code for DDD violations AND structural issues. Output is a diagnostic report with severity and fix direction — not prescriptions.

Core Principle: Surface domain modeling problems AND structural cohesion issues that create maintenance burden, coupling, and inconsistency.

User Input

$ARGUMENTS

Session Context

Use {TICKETS_PATH} in all file path templates below (if it's not defined read ticketsPath key from .mdt-config.toml).

Supported invocations:

/mdt:domain-audit MDT-077                    # Audit code touched by CR
/mdt:domain-audit --path src/shared/services # Audit directory directly
/mdt:domain-audit --path src/orders,src/payments # Multiple paths

Output

Creates {TICKETS_PATH}/{CR-KEY}/domain-audit.md (with CR) or docs/audits/domain-audit-{timestamp}.md (standalone)

Keep the report concise: prioritize high-severity issues and actionable fixes.

When to Use

Situation Use Audit?
Suspect poor domain modeling ✅ Yes
Before major refactoring ✅ Yes
Code feels coupled/rigid ✅ Yes
Validation scattered everywhere ✅ Yes
Related code scattered across directories ✅ Yes
Suspect layer violations ✅ Yes
New feature, clean slate ❌ Use /mdt:domain-lens instead
Simple CRUD with no domain logic ❌ Skip

What This Detects

DDD Violations

Violation Signal Severity
Anemic domain model Entities = data bags, services = all logic High
Aggregate boundary leak Internal entities accessed directly High
Missing value objects Primitives for domain concepts Medium
Invariant scatter Same rule validated in multiple places Medium
Wrong aggregate root Operations bypass natural entry point High
Cross-aggregate transaction Multiple aggregates in one atomic operation High
Missing domain events Tight coupling where events belong Medium
Language drift Code terms ≠ ubiquitous language Low
God service Single service doing everything High
Feature envy Service knows too much about entity internals Medium

Read the full file on GitHub · 924 lines

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 · 924 lines · 0 tokens per session scan A ebf06841cf46

Subscribe to this mod's changes

domain-audit is a command published in the GitHub repository andkirby/markdown-ticket (5 stars, last pushed 19d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 6,363 tokens. 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.