ddd SKILL.md skillA
ddd from usetemi/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add usetemi/skills/ddd@git:20260921.1d9903ePins git:20260921.1d9903e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- usetemi/skills
- Path
skills/ddd/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260921.1d9903e, committed Sep 21, 2026
- First version recorded
- Sep 21, 2026
- Size
- 8,626 bytes
- Repository stars
- 6
- License
- MIT
Write, revise, or consolidate DOMAIN.md, a repository's domain model, by interviewing the user as the domain expert. Use to create DOMAIN.md, to model a domain with domain-driven design (ubiquitous language, entities, value objects, domain services, aggregates, domain events, rules and invariants), when a task introduces a term, rule, or concept absent from DOMAIN.md, when code and DOMAIN.md disagree, or to remove inconsistencies and redundancies from an existing DOMAIN.md. Produces the…
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
# Domain-Driven Design Agents already know domain-driven design. What they lack is the domain: the terms, rules, and boundaries of this business. `DOMAIN.md` supplies that. It records the ubiquitous language, the model, and the rules and invariants, so every later task starts from the same model instead of re-deriving one from code. This skill writes and maintains `DOMAIN.md` at the repository root. Treat the user as the domain expert: extract rules through concrete scenarios and write down only what they confirm. The skill does not change code. Bringing the implementation in line with the model is separate work that reads `DOMAIN.md`. [`references/domain-driven-design.md`](references/domain-driven-design.md) is this skill's definition of domain-driven design. Read it: - before the first interview in a repository, for the interview technique and the modeling concepts - when mapping evidence from an existing system to concepts; its "Bring Key Concepts Into Light" and "Review an Existing System" sections say what to look for - during a consolidation pass, for what makes a term or boundary precise The reference says to keep the model and the implementation aligned. That …
Read the whole file at its exact version.
How to install
mdr add usetemi/skills/ddd@sha256:dd6012cdec443b44The line at the top of this page pins the label git:20260921.1d9903e, 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_ze7my57wsokl3tgp)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Sep 21, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.1d9903e latest | 2026-09-21 | 1d9903e | 8,626 B | A | view · diff |
| git:20260921.3066ef1 | 2026-09-21 | 3066ef1 | 8,128 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 (8626 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
usetemi/skills · 6 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ze7my57wsokl3tgp GET https://markdownregistry.com/api/v1/resolve?ref=usetemi/skills/ddd GET https://markdownregistry.com/api/v1/blob/dd6012cdec443b4418736ea3ef45393fa14271316b5a5e0b85ce1b7a3c89839a
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.