microservices

microservices is a skill for Claude Code, Codex from G1Joshi/Agent-Skills. It costs 14 tokens per session (715 once invoked), scanned A, original, MIT.

A way to build an application from separate services, each responsible for part of the system and deployable on its own. The services communicate through APIs or messages.

In plain words
What is it for?
Use it when a large system, team, or workload benefits from independently managed services such as orders, inventory, and an API gateway.
Why use it?
It lets teams deploy and scale selected parts independently. It also separates services with different resource needs, but adds coordination and operational work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/g1joshi/agent-skills/microservices
Any agent
npx skills add G1Joshi/Agent-Skills --skill microservices
Clone the repo
git clone --depth 1 https://github.com/G1Joshi/Agent-Skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for microservices

README.md
[![agentmods](https://agentmods.dev/badge/skills/g1joshi/agent-skills/microservices.svg)](https://agentmods.dev/skills/g1joshi/agent-skills/microservices)
Your own site
<a href="https://agentmods.dev/skills/g1joshi/agent-skills/microservices"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/microservices.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 715 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.00715
Opus 5 $0.00007 $0.00358
Sonnet 5 $0.00003 $0.00143
Haiku 4.5 $0.00001 $0.00072

Measured 5d ago against content hash cbcc484ae9c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

microservices scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/architecture/microservices/SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Microservices

Microservices architecture structures an application as a collection of loosely coupled, independently deployable services. Ideally, each service corresponds to a Bounded Context (DDD).

When to Use

  • Large teams (50+ devs) where coordination on a monolith slows down deployment.
  • Modules have conflicting resource requirements (e.g., one needs huge RAM, another needs GPU).
  • Need to scale specific parts of the system independently.
  • 2025 Reality check: Don't start with Microservices. Start with a Modular Monolith.

Quick Start

# docker-compose.yml (Simulated Microservices)
services:
  order-service:
    build: ./services/order
    ports: ["3001:3000"]
    environment:
      - DB_HOST=order-db

  inventory-service:
    build: ./services/inventory
    ports: ["3002:3000"]

  api-gateway:
    image: nginx
    ports: ["80:80"]
    depends_on:
      - order-service
      - inventory-service

Core Concepts

Independence

Each service owns its own data. Service A cannot query Service B's database directly; it must ask Service B via API.

Inter-Service Communication

  • Synchronous: HTTP/REST or gRPC (Request/Response). Tightly coupled in time.
  • Asynchronous: Message Queues (RabbitMQ, Kafka, SQS). Decoupled in time.

Database per Service

Ensures loose coupling. If a service needs data from another, use data replication (Events) or API composition.

Common Patterns

API Gateway

A single entry point for all clients. Handles routing, auth, rate limiting, and aggregation.

Circuit Breaker

Detects failures and prevents the application from trying to perform the action that is doomed to fail (e.g., external service down), protecting the system.

Saga Pattern

Managing distributed transactions. Since you can't have ACID across services, use Sagas (sequence of local transactions) with compensating actions for rollbacks.

Best Practices

Do:

  • Automate CI/CD and Infrastructure as Code (Terraform/K8s). You can't manage 50 services manually.
  • Implement Distributed Tracing (OpenTelemetry) immediately.
  • Define clear Service Boundaries (use DDD).

Read the full file on GitHub · 95 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 95 lines · 14 tokens per session scan A cbcc484ae9c9

Subscribe to this mod's changes

microservices is a skill published in the GitHub repository G1Joshi/Agent-Skills (12 stars, last pushed 6mo ago), licensed MIT. It adds 14 tokens to every session and 715 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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