principle-ddd SKILL.md skillA
principle-ddd from lugassawan/swe-workbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lugassawan/swe-workbench/principle-ddd@git:20260828.71a6399Pins git:20260828.71a6399 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lugassawan/swe-workbench
- Path
skills/principle-ddd/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260828.71a6399, committed Aug 28, 2026
- First version recorded
- Jun 12, 2026
- Size
- 4,348 bytes
- Repository stars
- 3
- License
- MIT
Domain-Driven Design (DDD) — bounded contexts, entities, domain events, and repository pattern. Auto-load when modeling a complex domain, microservice splits, designing aggregates, or aligning code with business language.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
<!-- preload-canary: SWB-PRELOAD-PRINCIPLE-DDD -->
# Domain-Driven Design
DDD is a toolkit for **complex domains**. For CRUD, it is overkill.
## Strategic design
### Ubiquitous language
Every important concept in code uses the same word the domain experts use. If marketing says "subscription" and code says "userPlan", you have a translation tax forever. Rename.
### Bounded contexts
A bounded context is a boundary inside which a term has exactly one meaning. "Order" in Checkout is not the same entity as "Order" in Fulfillment — it just shares a name.
- One team, one context is the ideal.
- Cross-context communication goes through explicit contracts (events, APIs).
- Shared databases across contexts are an anti-pattern.
### Context map
Document how contexts relate: Partnership, Customer/Supplier, Conformist, Anticorruption Layer, Published Language, Shared Kernel, Separate Ways. Pick the relationship intentionally.
## Tactical design
### Entity
Identity persists through change. `User{id, name}` — renaming doesn't change the user.
…Read the whole file at its exact version.
How to install
mdr add lugassawan/swe-workbench/principle-ddd@sha256:3e17369bfb830a10The line at the top of this page pins the label git:20260828.71a6399, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_pu4xh3wrygow56x2)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 12, 2026 and Aug 28, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.71a6399 latest | 2026-08-28 | 71a6399 | 4,348 B | A | view · diff |
| git:20260811.925e30f | 2026-08-11 | 925e30f | 4,481 B | A | view · diff |
| git:20260725.074b496 | 2026-07-25 | 074b496 | 4,467 B | A | view · diff |
| git:20260623.6cafcad | 2026-06-23 | 6cafcad | 4,416 B | A | view · diff |
| git:20260612.3b80929 | 2026-06-12 | 3b80929 | 4,027 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4348 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
lugassawan/swe-workbench · 3 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pu4xh3wrygow56x2 GET https://markdownregistry.com/api/v1/resolve?ref=lugassawan/swe-workbench/principle-ddd GET https://markdownregistry.com/api/v1/blob/3e17369bfb830a10bf1b6e77dff84299cb8e4bb77b0dda01a8853b32894c293d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.