history-design SKILL.md skillA
history-design from event4u-app/agent-config is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add event4u-app/agent-config/history-design@git:20260727.e47fd4aPins git:20260727.e47fd4a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- event4u-app/agent-config
- Path
src/skills/history-design/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260727.e47fd4a, committed Jul 27, 2026
- First version recorded
- Jul 27, 2026
- Size
- 4,758 bytes
- Repository stars
- 19
- License
- MIT
Use when choosing HOW to record change history / audit trails — walks the tier matrix (columns → audit log → temporal → event sourcing). Triggers on 'wer hat was wann', 'audit log'.
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
# history-design
## When to use
- A model/table is declared audit-scoped ("we need to know who changed
what and when") and the mechanism must be chosen — NOT assumed.
- The user asks for an audit trail, change history, activity log, or
proposes event sourcing.
- NOT for reviewing an existing migration diff (route to
`schema-review`) and NOT for privacy/DSR policy design (route to
`privacy-review`; this skill only wires the interlock).
## Procedure
1. **Collect the requirement facts** (ask ONE question only if missing):
who edits the data (single editor vs multi-tenant), compliance need
(GDPR/SOC2/audit), point-in-time query need, replay/projection need,
expected mutation volume.
2. **Walk the tier matrix — normative, cheapest-sufficient wins:**
| Tier | Mechanism | Use when | Growth control |
|---|---|---|---|
| 0 | `updated_at`/`updated_by` columns | single-editor, no compliance need | none needed |
| 1 | Row-level audit log (Laravel: spatie/activitylog or owen-it/laravel-auditing; TS: thin custom audit table) | admin panels, SaaS tenant data, "wer hat was wann geändert" | retention policy REQUIRED | <!-- md-language-check: ignore -->
…Read the whole file at its exact version.
How to install
mdr add event4u-app/agent-config/history-design@sha256:4eb65b971dd92f3aThe line at the top of this page pins the label git:20260727.e47fd4a, 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_5vigqnbzck5cyemp)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Jul 27, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260727.e47fd4a latest | 2026-07-27 | e47fd4a | 4,758 B | A | view · diff |
| git:20260727.3d12492 | 2026-07-27 | 3d12492 | 4,804 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 (4758 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
event4u-app/agent-config · 19 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5vigqnbzck5cyemp GET https://markdownregistry.com/api/v1/resolve?ref=event4u-app/agent-config/history-design GET https://markdownregistry.com/api/v1/blob/4eb65b971dd92f3ace23575a5bbd4508e5f7d80be76157a3b03fd64d6dfd264e
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.