cratis-chronicle-event-specifications SKILL.md skillA

cratis-chronicle-event-specifications 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-chronicle-event-specifications@git:20261014.64fcc06

Pins git:20261014.64fcc06 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-chronicle-event-specifications/SKILL.md
Versions recorded
5
Latest version
git:20261014.64fcc06, committed Oct 14, 2026
First version recorded
Sep 16, 2026
Size
9,875 bytes
Repository stars
4
License
MIT

Specify event-append behavior with EventScenario from Cratis.Chronicle.Testing — seeding prior events through Given, appending through When or the event log, and asserting on the append result including constraint violations. Use when the behavior under specification is what reaches the event store. Do not use for command handling or for read-model projection behavior.

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

# Chronicle event specifications

`EventScenario` runs the append path in-process. No Chronicle server, no
database, no network — an empty event log at sequence number zero, with the
application's constraints discovered and active.

## Verified product sources

| Package | Purpose |
| --- | --- |
| `Cratis.Chronicle.Testing` | `EventScenario`, its `Given`/`When` builders, the `IAppendResult` `Should*` assertions |
| `Cratis.Chronicle` | `IEventSequence.Append`/`AppendMany`, `IAppendResult`, `ConstraintViolation` |

Sources: `Source/Clients/Testing/EventSequences/`, `TestingEventStore.cs`,
and `Source/Clients/DotNET/EventSequences/`.

```bash
dotnet add package Cratis.Chronicle.Testing
```

Reverify against the Chronicle repository before claiming support for another
version. Never translate an assertion name from memory.

## Route near misses

- The behavior is a command running through validators, `Provide()` and
  `Handle()`: use `cratis-application-slice-specifications`.
- The behavior is a projection or reducer building a read model: use
  `cratis-chronicle-read-model-specifications`.
- You are deciding what the constraint should *be*: use
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add cratis/ai/cratis-chronicle-event-specifications@sha256:d3f8fc7f2721cb70

The line at the top of this page pins the label git:20261014.64fcc06, 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.

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Versions

The registry has recorded 5 versions of this file, between Sep 16, 2026 and Oct 14, 2026, about one every 7 days.

versioncommittedcommitsizeaudit
git:20261014.64fcc06 latest2026-10-14 64fcc06 9,875 BA view · diff
git:20261013.9c1bacb2026-10-13 9c1bacb 9,424 BA view · diff
git:20261012.a7621fb2026-10-12 a7621fb 9,492 BA view · diff
git:20261006.3b4e4b32026-10-06 3b4e4b3 8,984 BA view · diff
git:20260916.2dd9dbe2026-09-16 2dd9dbe 8,783 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 (9875 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_f7q3k45ez3lg52fr
GET https://markdownregistry.com/api/v1/resolve?ref=cratis/ai/cratis-chronicle-event-specifications
GET https://markdownregistry.com/api/v1/blob/d3f8fc7f2721cb706ef646eef59b797784137696a836bc0ec25df79935bb26e8

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