discover-domain SKILL.md skillA

discover-domain from gbourgeat/ddd-ts-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add gbourgeat/ddd-ts-kit/discover-domain@git:20261010.c6c87e0

Pins git:20261010.c6c87e0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
gbourgeat/ddd-ts-kit
Path
plugin/skills/discover-domain/SKILL.md
Versions recorded
1
Latest version
git:20261010.c6c87e0, committed Oct 10, 2026
Size
3,243 bytes
Repository stars
7
License
MIT

Runs a light event storming in writing, from a statement of needs: actors, commands, domain events, policies, read models and external systems, laid out on a timeline, in the business's own words. Produces docs/architecture/discovery.md. Use as the first step of a new project or a new area of a product, before any boundary or any code, or when the user describes a business process to build. To cut the result into contexts use bounded-contexts.

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

# Discover the domain

Subject: `$ARGUMENTS` (otherwise the `## Needs` section of `docs/architecture/plan.md`)

Read the needs, and nothing of the code. The output is one file,
`docs/architecture/discovery.md`, that the owner can correct in five minutes.

## 1. Draft from the needs, then ask

Write the first version yourself from what was stated, then put to the owner only what the
needs do not say. Ask in batches of at most five questions, each one about a fact of the
business (what happens when a payment fails?), never about technique.

## 2. Find the elements, in this order

1. **Domain events**, first: what happens that the business cares about, in the past tense
   (`Order placed`, `Invoice issued`, `Payment refused`). Put them on a timeline. Hunt for the
   unhappy ones: refused, expired, cancelled, late.
2. **Commands**: what someone or something asks for, that causes each event (`Place order`).
   An event without a command is caused by time or by another event: say which.
3. **Actors**: who gives each command, by role, not by person. Include the system itself and
   time (every night, after 30 days).
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add gbourgeat/ddd-ts-kit/discover-domain@sha256:d4b2756c6324fc51

The line at the top of this page pins the label git:20261010.c6c87e0, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_o2mcox5d4vntn55f.svg)](https://markdownregistry.com/a/art_o2mcox5d4vntn55f)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 10, 2026.

versioncommittedcommitsizeaudit
git:20261010.c6c87e0 latest2026-10-10 c6c87e0 3,243 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3243 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

GitHub

gbourgeat/ddd-ts-kit · 7 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_o2mcox5d4vntn55f
GET https://markdownregistry.com/api/v1/resolve?ref=gbourgeat/ddd-ts-kit/discover-domain
GET https://markdownregistry.com/api/v1/blob/d4b2756c6324fc51953b9f17a58f6d22164b4a6ed616178e00737eb72d071f13

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.

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