plantuml-syntax SKILL.md skillA
plantuml-syntax from tractorjuice/arckit-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tractorjuice/arckit-claude/plantuml-syntax@git:20261001.754c23bPins git:20261001.754c23b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tractorjuice/arckit-claude
- Path
plugins/arckit/skills/plantuml-syntax/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261001.754c23b, committed Oct 1, 2026
- First version recorded
- Sep 27, 2026
- Size
- 5,345 bytes
- Repository stars
- 5
- License
- a license file GitHub does not identify
PlantUML syntax reference, C4-PlantUML first, for writing or fixing a diagram in an artefact: sequence, class, activity, state, ER, component, deployment and use-case diagrams, skinparams and themes, C4 layout conflicts and rendering errors. Not needed for Mermaid (mermaid-syntax), or when the request is for a governed diagram artefact with document control, which /arckit:diagram produces.
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
# PlantUML Syntax Reference A comprehensive reference for PlantUML diagram types with a focus on C4-PlantUML for architecture diagrams. This skill provides syntax documentation adapted from the [SpillwaveSolutions/plantuml](https://github.com/SpillwaveSolutions/plantuml) project, supplemented with ArcKit-specific C4 layout conflict rules and best practices. **This skill ships reference material, not runnable scripts.** Read the relevant reference file with `Read`, apply the syntax, and write the diagram into the user's artefact. Do not `Bash`-execute anything from `references/` — they are PlantUML/C4 syntax docs, not commands. ## Supported Diagram Types Select the appropriate diagram type and read the corresponding reference file: | Type | Reference | ArcKit Commands Using It | | ---- | --------- | ------------------------ | | C4-PlantUML | [c4-plantuml.md](references/c4-plantuml.md) | `/arckit:diagram` (C4 Context, Container, Component) | | Sequence Diagram | [sequence-diagrams.md](references/sequence-diagrams.md) | `/arckit:diagram` (Sequence mode) | | Class Diagram | [class-diagrams.md](references/class-diagrams.md) | — | …
Read the whole file at its exact version.
How to install
mdr add tractorjuice/arckit-claude/plantuml-syntax@sha256:c1f4427e9403afabThe line at the top of this page pins the label git:20261001.754c23b, 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_ciba6bsux7pr7gjn)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 27, 2026 and Oct 1, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261001.754c23b latest | 2026-10-01 | 754c23b | 5,345 B | A | view · diff |
| git:20260927.5e4f357 | 2026-09-27 | 5e4f357 | 5,294 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 (5345 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
tractorjuice/arckit-claude · 5 stars · license a license file GitHub does not identify · pushed 2026-10-12 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ciba6bsux7pr7gjn GET https://markdownregistry.com/api/v1/resolve?ref=tractorjuice/arckit-claude/plantuml-syntax GET https://markdownregistry.com/api/v1/blob/c1f4427e9403afab5a3cfef65949d3541121961f96686e00bccca9475510062d
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.