tactical-ddd

tactical-ddd is a skill for Claude Code, Codex from NoesisVision/nasde-toolkit. It costs 70 tokens per session (4,523 once invoked), scanned A, original, MIT.

A guide for designing and reviewing software around the business concepts it represents, known as tactical domain-driven design. It covers entities, value objects, repositories, aggregates, domain events, and domain services in modern .NET code.

In plain words
What is it for?
Use it for domain modelling, refactoring, architecture reviews, or code involving domain entities, repositories, bounded contexts, or domain events.
Why use it?
It helps keep business rules together and makes code structure reflect the problem the software solves. This can reduce scattered validation and unclear ownership of rules.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for domain modelling, refactoring, architecture reviews, or code involving domain…

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Install with agentmods
npx agentmods add skills/noesisvision/nasde-toolkit/tactical-ddd
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.

Any agent
npx skills add NoesisVision/nasde-toolkit --skill tactical-ddd
Clone the repo
git clone --depth 1 https://github.com/NoesisVision/nasde-toolkit

Made for: Claude Code, Codex.

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 tactical-ddd

README.md
[![agentmods](https://agentmods.dev/badge/skills/noesisvision/nasde-toolkit/tactical-ddd.svg)](https://agentmods.dev/skills/noesisvision/nasde-toolkit/tactical-ddd)
Your own site
<a href="https://agentmods.dev/skills/noesisvision/nasde-toolkit/tactical-ddd"><img src="https://agentmods.dev/badge/skills/noesisvision/nasde-toolkit/tactical-ddd.svg" alt="Measured on agentmods" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,523 The whole file, excluding the scripts and references it only reads on demand.
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.
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 5.1 $0.00070 $0.04523
Opus 5 $0.00035 $0.02261
Sonnet 5 $0.00014 $0.00905
Haiku 4.5 $0.00007 $0.00452

Measured 7d ago against content hash 97bfe32fb90d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

tactical-ddd 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 7d 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.

examples/ddd-architectural-challenges/variants/claude-ntcoding-tactical-ddd-anemic-tuned/skills/tactical-ddd/SKILL.md · 549 lines

How it starts

The opening of the file, as written. The whole thing — 549 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tactical DDD

Design, refactor, analyze, and review code by applying the principles and patterns of tactical domain-driven design.

This codebase's conventions

This codebase targets .NET 8. It originated on an old .NET version and is being modernized as it is enriched — write idiomatic modern C#, do not copy the legacy style:

  • File-scoped namespaces (namespace Foo;), not bracketed blocks.
  • Value objects as record / readonly record struct — you get value equality, ToString, and immutability for free, so do NOT hand-roll Equals/GetHashCode. Use init-only / required members and a static factory (or a validating primary constructor) so an instance cannot exist in an invalid state. EF Core maps these via owned types / value converters — keep a way for EF to materialize them, but don't let EF needs dictate a mutable, ctor-less data bag.
  • Nullable reference types enabled; use them to make "must exist" vs "may be absent" explicit rather than relying on runtime null checks.
  • Invariants: throw a domain-specific exception (or return a result type) from the factory / method that enforces them — not a generic Exception, and not validation scattered in services.
  • Layers: Domain/ (entities, value objects, invariants), Application/ (services that orchestrate), Controllers/ (HTTP + DTOs), Infrastructure/ (EF Core config). Domain holds no EF or ASP.NET references.
  • Keep the public API (controllers, DTOs, endpoints) unchanged when refactoring internals.

Principles

Read the full file on GitHub · 549 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. 7d ago First seen · 549 lines · 70 tokens per session scan A 97bfe32fb90d

Subscribe to this mod's changes

tactical-ddd is a skill published in the GitHub repository NoesisVision/nasde-toolkit (12 stars, last pushed yesterday), licensed MIT. It adds 70 tokens to every session and 4,523 once invoked, about $0.0003 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 2026-08-30.

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