c4-codebase-architecture SKILL.md skillA
c4-codebase-architecture from okhp3/skillz is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add okhp3/skillz/c4-codebase-architecture@git:20260828.866dec6Pins git:20260828.866dec6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- okhp3/skillz
- Path
community/c4-codebase-architecture/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260828.866dec6, committed Aug 28, 2026
- Size
- 15,124 bytes
- Repository stars
- 3
- License
- MIT
Helps an agent inspect a repository and produce C4 architecture documentation. Use this when reverse engineering a codebase, documenting system context, containers, components, or clarifying architecture from code and infrastructure.
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 Model Codebase Documentation Skill ## Purpose This skill helps an agent inspect a codebase and produce useful C4-style architecture documentation. It should combine evidence from the repository with targeted follow-up questions whenever code inspection alone is not enough to determine system boundaries, responsibilities, runtime topology, or business intent. The skill should be pragmatic rather than dogmatic. The goal is not to force every repository into a perfect set of four diagrams, but to produce the clearest possible architecture view at the right level of detail. --- ## When to use this skill Use this skill when the user wants to: * understand the architecture of an existing codebase * produce C4 documentation for a repository * generate a system context, container, or component view * onboard new engineers with architecture docs * reverse engineer system structure from code and infrastructure definitions * compare intended architecture with implemented architecture This skill works best when the repository includes at least some of the following: * source code * infrastructure as code * deployment descriptors * README or docs * API specifications …
Read the whole file at its exact version.
How to install
mdr add okhp3/skillz/c4-codebase-architecture@sha256:69c37c26f2e5f085The line at the top of this page pins the label git:20260828.866dec6, 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_fppllb6v2knojkc2)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 28, 2026.
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 (15124 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
okhp3/skillz · 3 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fppllb6v2knojkc2 GET https://markdownregistry.com/api/v1/resolve?ref=okhp3/skillz/c4-codebase-architecture GET https://markdownregistry.com/api/v1/blob/69c37c26f2e5f085ca288216d6da3bee2ba5f109a1bf2161cbca854692b79cf7
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.