architect-4r SKILL.md skillA
architect-4r from ontology-of-everything/semanticskills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ontology-of-everything/semanticskills/architect-4r@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
- ontology-of-everything/semanticskills
- Path
skills/en/architect-4r/SKILL.md- Versions recorded
- 1
- Latest version
- v0.1.0, committed Nov 4, 2026
- Size
- 4,929 bytes
- Repository stars
- 13
- License
- Apache-2.0
Use Li Yunhua's 4R method to summarize a system model from discussion context or source code and produce architecture documentation with diagrams and text.
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
# 4R Architecture ## Core understanding 4R is a logical framework for explaining a system clearly: at a defined level of observation, describe what the system consists of, how its parts relate, and how they work together to achieve a goal. The same system can have different views. Each view addresses a set of concerns, and key scenarios connect the views. This carries forward the 4+1 view model's idea of describing a system from multiple perspectives and checking it through scenarios. ## Four dimensions ### Rank: the level of observation Rank defines the scope and granularity of the discussion, such as an enterprise, system, service, module, or code. The same object may be a single role in an overall diagram and, when expanded, a system containing several roles. Rank determines which details belong in the current view and which belong at the next level. ### Role: what the system consists of Roles are the key parts at the current level, represented by nodes in a structure diagram. …
Read the whole file at its exact version.
How to install
mdr add ontology-of-everything/semanticskills/architect-4r@sha256:0577d32de9282aadThe 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_s3ta7stvig43issl)
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Versions
The registry has recorded 1 version of this file, committed on Nov 4, 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 (4929 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
ontology-of-everything/semanticskills · 13 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_s3ta7stvig43issl GET https://markdownregistry.com/api/v1/resolve?ref=ontology-of-everything/semanticskills/architect-4r GET https://markdownregistry.com/api/v1/blob/0577d32de9282aad3f4f8a88964ce2b4b578892a78ffc2e8fbfea6bf02741c6f
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.
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