cratis-event-model-diagram SKILL.md skillA

cratis-event-model-diagram from cratis/ai is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add cratis/ai/cratis-event-model-diagram@git:20261014.d5de86d

Pins git:20261014.d5de86d in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
cratis/ai
Path
.cratis/ai/skills/cratis-event-model-diagram/SKILL.md
Versions recorded
5
Latest version
git:20261014.d5de86d, committed Oct 14, 2026
First version recorded
Oct 11, 2026
Size
10,204 bytes
Repository stars
4
License
MIT

Create and maintain Mermaid eventmodeling diagrams for a Cratis module or feature, and keep them in sync with their authority (the accepted `.play` model where one covers the scope, otherwise the code). Use when adding, renaming, moving, or deleting a module, feature, behavior, command, event, read model, automation, translation, or cross-module flow. Do not use to decide the event vocabulary or stream boundaries - settle the model first, then render it here.

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

# Event model diagrams

Render an already-decided event model as a Mermaid `eventmodeling` diagram that
lives beside the code and is updated in the same change. If the event vocabulary
or the stream boundaries are not yet decided, model first; this skill draws a
chosen model, it does not choose one.

## Source authority

Diagrams use **Mermaid's native `eventmodeling` diagram type** (Mermaid v11.15
and later). The grammar is owned by Mermaid, and
<https://mermaid.js.org/syntax/eventmodeling.html> is the authority whenever this
file and Mermaid disagree. Confirm the Mermaid version available to the renderer
before relying on a construct.

The Cratis artifacts a diagram refers to were originally checked against `Cratis.Chronicle`
18.3.0 and re-read against Chronicle 19.50.0 and the Arc query and command surface it is used with
(tool versions: `cratis-screenplay-toolchain` `SKILL.md`). The Mermaid claim above is
external and was not re-verified here.

## What an event model is

It arranges a module's commands, events, read models, and automations on a
left-to-right business-flow timeline, answering *"what happens in this module,
and in what order?"*.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add cratis/ai/cratis-event-model-diagram@sha256:b365218b4d4fe734

The line at the top of this page pins the label git:20261014.d5de86d, 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_fspu2lxktooqcey5.svg)](https://markdownregistry.com/a/art_fspu2lxktooqcey5)

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

Versions

The registry has recorded 5 versions of this file, between Oct 11, 2026 and Oct 14, 2026, more than one a day.

versioncommittedcommitsizeaudit
git:20261014.d5de86d latest2026-10-14 d5de86d 10,204 BA view · diff
git:20261013.e57d5c32026-10-13 e57d5c3 9,700 BA view · diff
git:20261013.dab149a2026-10-13 dab149a 9,699 BA view · diff
git:20261012.ae9cd352026-10-12 ae9cd35 9,713 BA view · diff
git:20261011.2d3a1f92026-10-11 2d3a1f9 8,430 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 (10204 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

cratis/ai · 4 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fspu2lxktooqcey5
GET https://markdownregistry.com/api/v1/resolve?ref=cratis/ai/cratis-event-model-diagram
GET https://markdownregistry.com/api/v1/blob/b365218b4d4fe7343c3f12340a9db48596a65e1708198c33f494cec939ed55c4

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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