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when-NOT-to-use-microservices

95 / 100 · Low risk

Fine to try. Some of what it can do is expected: a devops skill usually runs commands, installs tools and uses cloud credentials.

By MadBomber/experiments (GitHub) · devops · 11 stars · scanned at commit 8139ff6

A diagnostic skill that refuses microservices in the wrong contexts and recommends a modular monolith instead. Covers the team-size threshold, the deploy-coupling argument, the distributed-systems tax, when DHH's "majestic monolith" is correct, and the "you're not Netflix" rule. Use when the user mentions microservices, splitting our monolith, service-oriented architecture, going micro, "should we split the codebase", or asks how to break up a Rails app. THIS SKILL'S JOB IS TO PUSH BACK before …

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'when-not-to-use-microservices' ] || [ -L ~/.agents/skills/'when-not-to-use-microservices' ]; then echo 'A skill folder named when-not-to-use-microservices already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/MadBomber/experiments' "$d" && git -C "$d" checkout --quiet '8139ff68e8895b544661aa2ba8b53268d68652bc' -- 'ai_misc/skills/rails-skills/40-when-NOT-to-use-microservices' && mkdir -p ~/.agents/skills && cp -R "$d"/'ai_misc/skills/rails-skills/40-when-NOT-to-use-microservices' ~/.agents/skills/'when-not-to-use-microservices' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'when-not-to-use-microservices' ~/.claude/skills/'when-not-to-use-microservices' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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