hexagonal-architecture SKILL.md skillA

hexagonal-architecture from amey-thakur/ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add amey-thakur/ai-skills/hexagonal-architecture@git:20260718.ea9bc00

Pins 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/hexagonal-architecture/SKILL.md
Versions recorded
1
Latest version
git:20260718.ea9bc00, committed Jul 18, 2026
Size
2,852 bytes
Repository stars
13
License
MIT

Isolate domain logic behind ports it owns while frameworks, databases, and transports live in adapters that plug into those ports. Use when business rules keep getting entangled with the web framework or database and you want the core testable and swappable in isolation.

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

# Hexagonal architecture

Also called ports and adapters. The idea is a hard rule: the domain depends on
nothing, and everything depends on the domain. When the HTTP handler and the
SQL query bleed into the business rules, you cannot test the rules without a
server and a database, and you cannot change either without risking the rules.

## Method

1. **Define ports as interfaces the domain owns.** A port is a Python Protocol,
   a Java interface, a Go interface declared inside the domain package. The
   domain names the shape it needs, `PaymentGateway.charge(amount)`, and never
   imports the thing that fulfills it.
2. **Keep the domain import-clean.** No `import requests`, no ORM base class, no
   framework annotation inside the core. Grep the domain package for your web
   and database libraries: a single hit is a leak to fix, not to tolerate.
3. **Split ports into driving and driven.** Driving (primary) ports are how the
   outside calls in: a use-case interface a REST controller invokes. Driven
   (secondary) ports are how the domain calls out: repositories, gateways,
   clocks. Naming the two directions keeps the wiring legible.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add amey-thakur/ai-skills/hexagonal-architecture@sha256:7525e7fba7e0cd97

The 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_f3notrr5sejxjlhi.svg)](https://markdownregistry.com/a/art_f3notrr5sejxjlhi)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jul 18, 2026.

versioncommittedcommitsizeaudit
git:20260718.ea9bc00 latest2026-07-18 ea9bc00 2,852 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2852 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

GitHub

amey-thakur/ai-skills · 13 stars · license MIT · pushed 2026-09-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_f3notrr5sejxjlhi
GET https://markdownregistry.com/api/v1/resolve?ref=amey-thakur/ai-skills/hexagonal-architecture
GET https://markdownregistry.com/api/v1/blob/7525e7fba7e0cd977340009610221f2b0fa830c966fabbda1feb7b6832b65078

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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