c4-diagrams SKILL.md skillA
c4-diagrams from resilens/agentskills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add resilens/agentskills/c4-diagrams@v0.1Pins v0.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- resilens/agentskills
- Path
c4-diagrams/SKILL.md- Versions recorded
- 5
- Latest version
- v0.1, committed May 1, 2026
- First version recorded
- Feb 22, 2026
- Size
- 28,422 bytes
- Repository stars
- 4
- License
- MIT
Use for architectural analysis and documentation; create C4 PlantUML diagrams with clear actors, system boundaries, containers, components, and relationships.
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
# C4 Diagrams with PlantUML ## When to use this skill Use this skill when you need to: - Create C4 context/container/component/code diagrams in PlantUML - Capture actors, systems, containers, and their relationships for an architecture view - Ask for or refine inputs like primary actors, system boundaries, key containers, and data flows - Maintain diagrams in `$REPO_ROOT/docs/diagrams` by default. You may ask the user if she wants to have a `./diagrams/` folder directly next to some other files. ## Overview For a code repository, a user may ask to create and tune architectural diagrams using **C4-PlantUML**. [C4 documentation](https://c4model.com/) C4 is a developer-friendly method for visualizing software architecture through four hierarchical levels of abstraction: Context, Container, Component, and Code. This approach progressively adds detail, starting with a high-level overview of the system's interactions and zooming into finer-grained components to communicate design clearly. PlantUML is an open-source tool that allows users to create various types of diagrams, including UML diagrams, from simple plain-text descriptions. …
Read the whole file at its exact version.
How to install
mdr add resilens/agentskills/c4-diagrams@sha256:fcfe702fbaace845The line at the top of this page pins the label v0.1, 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_whjtw4lg3334a2vk)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Feb 22, 2026 and May 1, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.1 latest | 2026-05-01 | 7fa8b3a | 28,422 B | A | view · diff |
| v0.1 | 2026-02-28 | f0c3ac1 | 25,879 B | A | view · diff |
| v0.1 | 2026-02-22 | a8ab059 | 22,359 B | A | view · diff |
| v0.1 | 2026-02-22 | d3218e3 | 22,168 B | A | view · diff |
| v0.1 | 2026-02-22 | 58c3bd9 | 20,858 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 (28422 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
resilens/agentskills · 4 stars · license MIT · pushed 2026-09-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_whjtw4lg3334a2vk GET https://markdownregistry.com/api/v1/resolve?ref=resilens/agentskills/c4-diagrams GET https://markdownregistry.com/api/v1/blob/fcfe702fbaace84583947a86613069f4f83072c00020f85d79f85d577ac3882a
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.