c4-architecture SKILL.md skillA
c4-architecture from coco-research/coco is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add coco-research/coco/c4-architecture@v0.1.0Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- coco-research/coco
- Path
skills/c4-architecture/SKILL.md- Versions recorded
- 2
- Latest version
- v0.1.0, committed Oct 21, 2026
- First version recorded
- Apr 26, 2026
- Size
- 14,313 bytes
- Repository stars
- 797
- License
- a license file GitHub does not identify
Generate architecture documentation using C4 model Mermaid diagrams. Use when asked to create architecture diagrams, document system architecture, visualize software structure, or generate context/container/component/deployment diagrams.
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 Architecture Documentation Generate architecture documentation using C4 model Mermaid diagrams. Use when asked to create architecture diagrams, document system architecture, visualize software structure, create C4 diagrams, or generate context/container/component/deployment diagrams. Triggers include "architecture diagram", "C4 diagram", "system context", "container diagram", "component diagram", "deployment diagram", "document architecture", "visualize architecture". ## Workflow 1. **Understand scope** — Determine which C4 level(s) are needed based on audience 2. **Analyze codebase** — Explore the system to identify components, containers, and relationships 3. **Generate diagrams** — Create Mermaid C4 diagrams at appropriate abstraction levels 4. **Document** — Write diagrams to markdown files with explanatory context ## C4 Diagram Levels Select the appropriate level based on the documentation need: | Level | Diagram Type | Audience | Shows | When to Create | |-------|-------------|----------|-------|----------------| | 1 | **C4Context** | Everyone | System + external actors | Always (required) | …
Read the whole file at its exact version.
How to install
mdr add coco-research/coco/c4-architecture@sha256:916bad2f9a1cfb5fThe line at the top of this page pins the label v0.1.0, 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_dlwe4avapyahmxyt)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Apr 26, 2026 and Oct 21, 2026, about one every 179 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.1.0 latest | 2026-10-21 | 0726926 | 14,313 B | A | view · diff |
| v0.1.0 | 2026-04-26 | d53cc6c | 10,856 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 (14313 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
coco-research/coco · 797 stars · license a license file GitHub does not identify · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dlwe4avapyahmxyt GET https://markdownregistry.com/api/v1/resolve?ref=coco-research/coco/c4-architecture GET https://markdownregistry.com/api/v1/blob/916bad2f9a1cfb5fd3d1985f1e748d69c5455887e537978f09c42d0bca57f5d3
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.