oracle-codebase-design SKILL.md skillA
oracle-codebase-design from martinffx/atelier is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add martinffx/atelier/oracle-codebase-design@git:20261009.3672e9cPins git:20261009.3672e9c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- martinffx/atelier
- Path
skills/oracle-codebase-design/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261009.3672e9c, committed Oct 9, 2026
- Size
- 8,056 bytes
- Repository stars
- 48
- License
- MIT
Shared vocabulary and principles for designing deep modules. Use when designing or changing a module's interface, deciding where a seam goes, handling untrusted input at the edges, choosing the level to test at, naming modules, or making code more testable. Also use when another skill needs the deep-module vocabulary.
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
# Codebase Design Design **deep modules**: a lot of behaviour behind a small interface, placed at a clean seam, testable through that interface. The aim is leverage for callers, locality for maintainers, and testability for everyone. ## Why Complexity is the enemy. It shows up as: - **Change amplification**: a simple change touches many places. - **Cognitive load**: you must hold a lot in your head to change anything safely. - **Unknown unknowns**: it is not obvious what you need to change or know. It has two causes: **dependencies** and **obscurity**. Good design removes both. Work **strategically, not tactically**. Working code is not enough. Each change is a small, continual investment in the design, not a patch on top of it. ## Glossary Use these terms exactly. Don't substitute "component," "service," "API," or "boundary." Consistent language is the whole point. **Module**: anything with an interface and an implementation. Deliberately scale-agnostic: a function, class, package, or tier-spanning slice. _Avoid_: unit, component, service. …
Read the whole file at its exact version.
How to install
mdr add martinffx/atelier/oracle-codebase-design@sha256:e34d381c5a9c597fThe line at the top of this page pins the label git:20261009.3672e9c, 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_y7jrg6j5ieplnop2)
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Versions
The registry has recorded 1 version of this file, committed on Oct 9, 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 (8056 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
martinffx/atelier · 48 stars · license MIT · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_y7jrg6j5ieplnop2 GET https://markdownregistry.com/api/v1/resolve?ref=martinffx/atelier/oracle-codebase-design GET https://markdownregistry.com/api/v1/blob/e34d381c5a9c597fafbc562b83d7948e69017adb94e25a115ad677a8fe211efc
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.