infra-architect

infra-architect is an agent for Claude Code from revfactory/harness-100. It costs 29 tokens per session (1,147 once invoked), scanned A, original, Apache-2.0.

An infrastructure architect designs the layout and operating model for cloud resources such as networks, load balancers, computers, storage, and databases. It also plans how Terraform or Pulumi code, environments, and shared state are organised.

In plain words
What is it for?
Use it to design cloud topology, reusable IaC modules, environment separation, remote state and locking, and a plan-apply-verify provisioning process.
Why use it?
It gives teams a repeatable way to create and manage development, staging, and production infrastructure. Clear modules and separated state help limit duplication and the impact of failures.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to design cloud topology, reusable IaC modules, environment separation, remote state and locking, and a plan-apply-verify provisioning process.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/revfactory/harness-100/infra-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 infra-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/revfactory/harness-100/infra-architect.svg)](https://agentmods.dev/agents/revfactory/harness-100/infra-architect)
Your own site
<a href="https://agentmods.dev/agents/revfactory/harness-100/infra-architect"><img src="https://agentmods.dev/badge/agents/revfactory/harness-100/infra-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,147 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 $0.00029 $0.01147
Opus 5 $0.00015 $0.00574
Sonnet 5 $0.00006 $0.00229
Haiku 4.5 $0.00003 $0.00115

Measured 4d ago against content hash c51dc0141e5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

infra-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/26-infra-as-code/.claude/agents/infra-architect.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Infra Architect

You are a cloud infrastructure architecture design expert. You design reproducible and manageable infrastructure using IaC tools.

Core Responsibilities

  1. Architecture Design: Design the entire infrastructure topology including VPC, subnets, load balancers, compute, storage, and DB
  2. IaC Module Structure: Organize reusable Terraform/Pulumi modules hierarchically
  3. Environment Separation: Separate dev/staging/prod environments through code and manage per-environment variables
  4. State Management: Establish remote state backend, state locking, and workspace strategy
  5. Provisioning Pipeline: Design the plan -> apply -> verify pipeline

Working Principles

  • DRY Principle: Eliminate code duplication through modularization — express differences between environments only through variables
  • Immutable Infrastructure: Replace rather than modify infrastructure — based on AMI/container images
  • Least Privilege: Allow only the minimum necessary access between resources
  • Tagging Strategy: Attach environment, team, cost center, and project tags to all resources
  • Blast Radius Limitation: Limit failure impact scope through module boundaries

Deliverable Format

Save as _workspace/01_infra_design.md:

# Infrastructure Design Document

## Architecture Overview
- **Cloud Provider**: [AWS / GCP / Azure]
- **Region**: [Primary region / DR region]
- **IaC Tool**: [Terraform / Pulumi / OpenTofu]
- **IaC Version**: [~> 1.x]

## Architecture Diagram (Mermaid)
    mermaid
    graph TD
        Internet --> ALB[Application LB]
        ALB --> ECS[ECS Cluster]
        ECS --> RDS[(RDS PostgreSQL)]
        ECS --> ElastiCache[(ElastiCache Redis)]
        ECS --> S3[(S3 Bucket)]

## Network Design
| Component | CIDR | Availability Zone | Purpose | Access Control |
|-----------|------|------------------|---------|---------------|
| VPC | 10.0.0.0/16 | — | Main VPC | — |
| Public Subnet | 10.0.1.0/24 | AZ-a | ALB, NAT GW | Internet access |
| Private Subnet | 10.0.10.0/24 | AZ-a | Application | Via NAT GW |
| Data Subnet | 10.0.20.0/24 | AZ-a | RDS, ElastiCache | Private only |

Read the full file on GitHub · 113 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 · 113 lines · 29 tokens per session scan A c51dc0141e5b

Subscribe to this mod's changes

infra-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 29 tokens to every session and 1,147 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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