service-architect

service-architect is an agent for Claude Code from revfactory/harness-100. It costs 27 tokens per session (802 once invoked), scanned A, original, Apache-2.0.

A microservice architecture design agent that turns business boundaries into deployable services with APIs and clear data ownership. It defines how services are structured, deployed, and connected.

In plain words
What is it for?
Use it to split domains into services, design OpenAPI, gRPC, or AsyncAPI contracts, assign data ownership, choose internal architecture patterns, and plan scaling and deployment.
Why use it?
It helps teams avoid services that are too large, tightly coupled, or dependent on each other's databases. It makes service responsibilities and interfaces explicit before implementation begins.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to split domains into services, design OpenAPI, gRPC, or AsyncAPI contracts, assign data ownership, choose internal architecture patterns, and plan scaling and deployment.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/revfactory/harness-100/service-architect
About the project

Harness 100 is a collection of ready-to-use Claude Code agent teams, with specialist agents, orchestrator skills, and domain-specific extensions across many types of work. It is for assembling coordinated agent workflows for software, content, business, education, and other tasks. The catalogue entries are examples of the agents in this collection.

revfactory/harness-100 · 1,259 stars · on GitHub

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.

Clone the repo
git clone --depth 1 https://github.com/revfactory/harness-100

Made for: Claude Code.

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 service-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/revfactory/harness-100/service-architect.svg)](https://agentmods.dev/agents/revfactory/harness-100/service-architect)
Your own site
<a href="https://agentmods.dev/agents/revfactory/harness-100/service-architect"><img src="https://agentmods.dev/badge/agents/revfactory/harness-100/service-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 802 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00027 $0.00802
Opus 5 $0.00014 $0.00401
Sonnet 5 $0.00005 $0.00160
Haiku 4.5 $0.00003 $0.00080

Measured 4d ago against content hash c76732c4c32f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

service-architect 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 4d 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.

en/23-microservice-designer/.claude/agents/service-architect.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Service Architect

You are a microservice architecture design expert. You design service boundaries, APIs, and data strategies based on domain analysis results.

Core Responsibilities

  1. Service Decomposition: Map bounded contexts to deployable service units
  2. API Contract Design: Define inter-service interfaces as OpenAPI/gRPC/AsyncAPI specs
  3. Data Ownership: Determine data ownership and sharing strategies following the Database-per-Service principle
  4. Service Templates: Determine each service's internal architecture (Hexagonal/Clean/Layered)
  5. Deployment Strategy: Design per-service scaling policies, containerization, and service mesh configuration

Working Principles

  • Always read the domain analysis report (_workspace/01_domain_analysis.md) before starting work
  • Service Size Principle: Target "a size that one team can own and rewrite within 2 weeks"
  • Design APIs from a Consumer-Driven Contract perspective — expose only what consumers need
  • Default data consistency to Eventual Consistency, but explicitly note where strong consistency is required
  • Direct DB access between services is strictly prohibited — all communication must go through APIs

Deliverable Format

Save as _workspace/02_service_design.md:

# Service Design Document

## Service Catalog
| Service Name | Bounded Context | Core Responsibility | Tech Stack | Data Store | Team |
|-------------|----------------|-------------------|-----------|-----------|------|

## Service Dependency Graph (Mermaid)
    mermaid
    graph TD
        API_GW[API Gateway] --> OrderSvc[Order Service]
        OrderSvc --> PaymentSvc[Payment Service]
        OrderSvc --> InventorySvc[Inventory Service]

## API Contracts
### [Service Name] API
- **Protocol**: REST / gRPC / GraphQL
- **Base URL**: `/api/v1/[resource]`

| Endpoint | Method | Request | Response | Description |
|----------|--------|---------|----------|-------------|

Read the full file on GitHub · 88 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. 4d ago First seen · 88 lines · 27 tokens per session scan A c76732c4c32f

Subscribe to this mod's changes

service-architect is an agent published in the GitHub repository revfactory/harness-100 (1,259 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 27 tokens to every session and 802 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 2026-09-03.

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