layered-architecture SKILL.md skillA
layered-architecture from amey-thakur/ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add amey-thakur/ai-skills/layered-architecture@git:20260718.ea9bc00Pins git:20260718.ea9bc00 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- amey-thakur/ai-skills
- Path
skills/architecture/layered-architecture/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260718.ea9bc00, committed Jul 18, 2026
- Size
- 2,839 bytes
- Repository stars
- 13
- License
- MIT
Organize a system into layers with one permitted direction of dependency and enforce that direction mechanically at the import level. Use when a codebase is sliding toward tangled cross-references and you need a rule a linter can check, not a convention people forget.
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
# Layered architecture Layers are only useful if the arrows point one way. The moment the database layer imports the web layer "just this once," the structure stops being a structure and becomes decoration on a ball of mud. The discipline is not drawing the diagram: it is refusing every dependency that runs uphill. ## Method 1. **Name the layers and fix the direction.** A common stack is presentation over application over domain over infrastructure, with dependencies allowed to point down only. Write the direction down before you write code, because every later argument is settled by this one sentence. 2. **Give each layer its own module namespace.** One package or directory per layer, so a dependency across layers is a visible import statement, not a buried function call. If layers share a namespace, no tool can see the boundary and neither can the reviewer. 3. **Invert dependencies that need to point up.** When the domain needs to save data, it defines a repository interface and infrastructure implements it. The arrow at compile time still points down even though control at runtime flows …
Read the whole file at its exact version.
How to install
mdr add amey-thakur/ai-skills/layered-architecture@sha256:5b847d825fac0713The line at the top of this page pins the label git:20260718.ea9bc00, 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_jub2kd6vsttn7eul)
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Versions
The registry has recorded 1 version of this file, committed on Jul 18, 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 (2839 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
amey-thakur/ai-skills · 13 stars · license MIT · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jub2kd6vsttn7eul GET https://markdownregistry.com/api/v1/resolve?ref=amey-thakur/ai-skills/layered-architecture GET https://markdownregistry.com/api/v1/blob/5b847d825fac0713ade04356fadd8f3019a7d4f5bc86d8a9c409fb9d22e6228a
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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