domain-modeling

domain-modeling is a skill for Claude Code, Codex from infra403/agentic-engineering-lab. It costs 142 tokens per session (1,584 once invoked), scanned A, original, MIT.

A domain-modeling workflow for describing a software system in terms of the business areas it serves, their main objects, shared language, and interactions. DDD, or domain-driven design, is the design approach behind it.

In plain words
What is it for?
Use it to identify bounded contexts, design aggregates, map relationships between contexts, and decide whether CQRS or event sourcing fits the system.
Why use it?
It helps prevent business concepts from being mixed together or named inconsistently before the system is built.

Skill for Claude CodeCodex

Part of the product-design plugin — 3 skills, 4 commands, 10 agents 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 skills/infra403/agentic-engineering-lab/domain-modeling
Any agent
npx skills add infra403/agentic-engineering-lab --skill domain-modeling
Clone the repo
git clone --depth 1 https://github.com/infra403/agentic-engineering-lab

Made for: Claude Code, Codex.

Or install product-design, the plugin that ships this one along with the rest of its 3 skills, 4 commands, 10 agents.

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-modeling

README.md
[![agentmods](https://agentmods.dev/badge/skills/infra403/agentic-engineering-lab/domain-modeling.svg)](https://agentmods.dev/skills/infra403/agentic-engineering-lab/domain-modeling)
Your own site
<a href="https://agentmods.dev/skills/infra403/agentic-engineering-lab/domain-modeling"><img src="https://agentmods.dev/badge/skills/infra403/agentic-engineering-lab/domain-modeling.svg" alt="Measured on agentmods" height="20"></a>
Per session 142 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,584 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 $0.00142 $0.01584
Opus 5 $0.00071 $0.00792
Sonnet 5 $0.00028 $0.00317
Haiku 4.5 $0.00014 $0.00158

Measured 5d ago against content hash d6a7fae32377, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

domain-modeling 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.

claude-code/plugins/product-design-plugin/skills/domain-modeling/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Domain Modeling — 领域建模

核心理念

知识先行,角色后置。
每个建模决策必须引用 knowledge/ 中的决策框架 [K],不凭直觉。
生成(Generator)和评估(Evaluator)由不同角色执行。

文件结构

.claude/skills/domain-modeling/
├── SKILL.md                              ← 你在这里
├── knowledge/domain-modeling.md          ← DDD: 限界上下文/聚合/事件/CQRS
├── knowledge/software-design-philosophy.md ← APoSD: 深模块/信息隐藏/分层
├── roles/product-analyst.md              ← Generator: 业务验证
├── roles/reviewer.md                     ← Evaluator: 对抗性评估
├── references/PROTOCOL.md                ← 反 LLM 缺陷协议(全程约束)
└── templates/
    ├── checkpoint.md                     ← 阶段检查点格式
    └── progress.md                       ← design-progress.json 格式

前置条件

本 skill 的输入是 product-discovery 的 checkpoint-1-discovery.yaml。 如果尚未完成需求发现,建议先使用 /product-design 需求分析

启动步骤

  1. 读取本文件 — 了解工作流
  2. 读取 .claude/skills/domain-modeling/references/PROTOCOL.md — 了解反 LLM 缺陷约束
  3. 上下文重置 — 声明"阶段 2 开始,以下仅依赖 checkpoint-1"
  4. 加载 .claude/skills/domain-modeling/knowledge/domain-modeling.md — 建模的核心知识
  5. 加载 .claude/skills/domain-modeling/knowledge/software-design-philosophy.md — APoSD 深模块原则
  6. 走收敛循环 — GENERATE → EVALUATE → RESOLVE → CHECK
  7. 产出 checkpoint — checkpoint-2-modeling.yaml

Sprint 契约

  • 输入: checkpoint-1-discovery.yaml(需求发现产出)
  • 产出: 限界上下文图 + 上下文映射 + 聚合设计 + checkpoint-2-modeling.yaml
  • 收敛标准: Rubric 每项 ≥ 7/10
  • 迭代: 持续直到收敛(不限轮次)
  • Generator: .claude/skills/domain-modeling/roles/product-analyst.md(业务验证)
  • Evaluator: .claude/skills/domain-modeling/roles/reviewer.md(或独立 Subagent)

收敛循环

┌─────────────────────────────────────────────────┐
│  GENERATE  →  EVALUATE  →  RESOLVE  →  CHECK    │
│  (生成方案)    (独立评估)    (修正)      (收敛检查) │
│      ▲                                  │       │
│      │            未收敛                 │       │
│      └──────────────────────────────────┘       │
│               已收敛 ↓                           │
│          CHECKPOINT(固化 + 交接)                │
└─────────────────────────────────────────────────┘

Read the full file on GitHub · 125 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 125 lines · 142 tokens per session scan A d6a7fae32377

Subscribe to this mod's changes

domain-modeling is a skill published in the GitHub repository infra403/agentic-engineering-lab (5 stars, last pushed 4mo ago), licensed MIT. It adds 142 tokens to every session and 1,584 once invoked, about $0.0007 per session on Opus 5. 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.

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