uml-diagramming SKILL.md skillA
uml-diagramming from antoinebou12/uml-mcp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add antoinebou12/uml-mcp/uml-diagramming@git:20260903.227a982Pins git:20260903.227a982 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- antoinebou12/uml-mcp
- Path
.skill/skills/uml-diagramming/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260903.227a982, committed Sep 3, 2026
- First version recorded
- Apr 13, 2026
- Size
- 9,856 bytes
- Repository stars
- 107
- License
- MIT
Produces Mermaid or PlantUML diagram code from user specifications for UML, architecture, and flow diagrams. Use when the user asks for diagram code or output for the generate_uml / generate_uml_image MCP tools. Supports Kroki-renderable output.
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
# UML Diagramming Generate a single, correct Mermaid or PlantUML code block from a user's description. Output only the diagram script in one code block; no prose outside it. ## Positive vs negative instructions (LLM steering) These are **not** “good vs bad diagrams”—they steer the **LLM** before diagram source is finalized: | | **Positive** | **Negative** | |---|----------------|---------------| | **Role** | What the model **must** do (DSL shape, notation). | What the model **must not** do (common junk). | | **Good** | “Use `sequenceDiagram`.” “One statement per line.” “Participant names: Client, API, DB.” | “No ``` fences.” “No ‘Here is the diagram:’ preamble.” “No semicolon-packed sequenceDiagram.” | | **Bad** | Pasting the full user story again (use **template** / **description** for that). | Repeating the positive list as negatives (“do not omit participants”)—confusing and wasteful. | Keep each side **short**; when the provider exposes a separate negative or “must not” channel, route **negative** there instead of duplicating it in the main prompt. ## When to Use - User asks for a diagram (UML, architecture, flow, process, etc.) …
Read the whole file at its exact version.
How to install
mdr add antoinebou12/uml-mcp/uml-diagramming@sha256:9ac3914865bbc4dbThe line at the top of this page pins the label git:20260903.227a982, 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_gf4txdgc2s5ee7jp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 13, 2026 and Sep 3, 2026, about one every 36 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260903.227a982 latest | 2026-09-03 | 227a982 | 9,856 B | A | view · diff |
| git:20260505.0cf18a6 | 2026-05-05 | 0cf18a6 | 9,334 B | A | view · diff |
| git:20260422.143c3e3 | 2026-04-22 | 143c3e3 | 9,201 B | A | view · diff |
| git:20260422.24f076c | 2026-04-22 | 24f076c | 8,452 B | A | view · diff |
| git:20260413.8f94c6d | 2026-04-13 | 8f94c6d | 7,903 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 (9856 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
antoinebou12/uml-mcp · 107 stars · license MIT · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gf4txdgc2s5ee7jp GET https://markdownregistry.com/api/v1/resolve?ref=antoinebou12/uml-mcp/uml-diagramming GET https://markdownregistry.com/api/v1/blob/9ac3914865bbc4dbeb07026f05d87289babb7f13d2b5e1c6a22f8e73180d3147
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.