distribution-boundaries SKILL.md skillA

distribution-boundaries from robsonkades/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add robsonkades/agent-skills/distribution-boundaries@git:20261016.c769bd8

Pins git:20261016.c769bd8 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
robsonkades/agent-skills
Path
skills/distribution-boundaries/SKILL.md
Versions recorded
5
Latest version
git:20261016.c769bd8, committed Oct 16, 2026
First version recorded
Sep 6, 2026
Size
12,615 bytes
Repository stars
3
License
Apache-2.0

Deciding whether a boundary should be a process boundary, and designing it when it must be: what distribution actually costs (latency, serialisation, partial failure, lost atomicity, independent deployment), caller-driven remote granularity, and choosing between synchronous call, messaging and replication. Use when a module is proposed for extraction into a service, when microservices are being adopted without a named driver, when a service call sits inside a transaction, when one request fans…

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

# Distribution Boundaries

## Purpose

Make distribution a decision with a stated driver and a stated price, rather than a default
architecture. A process boundary is not a stronger version of a module boundary; it is a
different kind of thing, with different failure semantics. Remote calls do not inherit a
local transaction or a shared release lifecycle; transport failure can leave their outcome
unknown. Local calls can also block or fail after a mutation.

The first law here is old and still correct: **do not distribute your objects.** Distribute
when a concrete driver justifies it, and design the boundary to be worth its cost. The law
warns against transparent remote objects, not against every service boundary.

Java snippets are partial architectural illustrations, not a runnable application or a
declared Java baseline. Before implementing a client, transaction or cancellation choice,
inspect the project's JDK/toolchain, resolved framework/client versions and runtime
configuration. Applying this skill does not authorize upgrades or preview features.

## What crossing a process boundary actually costs
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add robsonkades/agent-skills/distribution-boundaries@sha256:ce5ccc743136ff23

The line at the top of this page pins the label git:20261016.c769bd8, 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_io6it6owecvrslti.svg)](https://markdownregistry.com/a/art_io6it6owecvrslti)

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

Versions

The registry has recorded 5 versions of this file, between Sep 6, 2026 and Oct 16, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
git:20261016.c769bd8 latest2026-10-16 c769bd8 12,615 BA view · diff
git:20260927.9ecadfd2026-09-27 9ecadfd 12,102 BA view · diff
git:20260923.832673e2026-09-23 832673e 11,456 BA view · diff
git:20260911.37b054b2026-09-11 37b054b 11,032 BA view · diff
git:20260906.e6ad4bd2026-09-06 e6ad4bd 10,600 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 (12615 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

robsonkades/agent-skills · 3 stars · license Apache-2.0 · pushed 2026-10-28 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_io6it6owecvrslti
GET https://markdownregistry.com/api/v1/resolve?ref=robsonkades/agent-skills/distribution-boundaries
GET https://markdownregistry.com/api/v1/blob/ce5ccc743136ff2363fa74b418017a77be23a79623f469ecc2ef6d25b2e955ad

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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