codebase-design SKILL.md skillB
codebase-design from paulrberg/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add paulrberg/agent-skills/codebase-design@git:20261015.6a82cf4Pins git:20261015.6a82cf4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- paulrberg/agent-skills
- Path
skills/codebase-design/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261015.6a82cf4, committed Oct 15, 2026
- First version recorded
- Aug 10, 2026
- Size
- 8,371 bytes
- Repository stars
- 101
- License
- MIT
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**: substantial behaviour behind a small interface at a clean seam, testable through that interface. Use this vocabulary when it clarifies a design decision. The aim is leverage for callers, locality for maintainers, and testability. ## Glossary Use these terms consistently where their distinctions matter. **Module**: anything with an interface and an implementation. Deliberately scale-agnostic: a function, class, package, or tier-spanning slice. _Avoid_: unit, component, service. **Interface**: everything a caller must know to use the module correctly: the type signature, but also invariants, ordering constraints, error modes, required configuration, and performance characteristics. _Avoid_: API, signature (too narrow because they refer only to the type-level surface). **Implementation**: what is inside a module, its body of code. Distinct from **Adapter**: a thing can be a small adapter with a large implementation (a Postgres repo) or a large adapter with a small implementation (an in-memory fake). When the seam is the topic, use "adapter". Otherwise, use "implementation". …
Read the whole file at its exact version.
How to install
mdr add paulrberg/agent-skills/codebase-design@sha256:af31c2ed62405dd2The line at the top of this page pins the label git:20261015.6a82cf4, 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_spi2y5e3jhzuhexa)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Aug 10, 2026 and Oct 15, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261015.6a82cf4 latest | 2026-10-15 | 6a82cf4 | 8,371 B | B | view · diff |
| git:20261006.56c0fe6 | 2026-10-06 | 56c0fe6 | 8,409 B | B | view · diff |
| git:20261005.a422c31 | 2026-10-05 | a422c31 | 7,892 B | B | view · diff |
| git:20261005.b512acb | 2026-10-05 | b512acb | 5,885 B | B | view · diff |
| git:20260822.23d7851 | 2026-08-22 | 23d7851 | 5,861 B | B | view · diff |
| git:20260810.bf10915 | 2026-08-10 | bf10915 | 5,929 B | B | view |
Audit of the latest version
- fail: Frontmatter declares a description
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Size between 200 bytes and 200 KB (8371 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
paulrberg/agent-skills · 101 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_spi2y5e3jhzuhexa GET https://markdownregistry.com/api/v1/resolve?ref=paulrberg/agent-skills/codebase-design GET https://markdownregistry.com/api/v1/blob/af31c2ed62405dd2fab8453cf86639ce554ee48ae5448d33c66fb26dc0e9565f
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.
More from paulrberg/agent-skills
Every file in paulrberg/agent-skills