architect

architect is an agent for Claude Code from fall-out-bug/sdp. It costs 16 tokens per session (417 once invoked), scanned A, original, MIT.

A software architecture adviser for defining system boundaries, design patterns, integrations, and technical decisions. It uses layered design principles to separate the user interface, application logic, business rules, and infrastructure.

In plain words
What is it for?
Use it to design or document system architecture, choose integration approaches, set module boundaries, and write architectural decision records.
Why use it?
It helps teams make design choices that are easier to maintain and reduces confusion about which part of a system should own each responsibility.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to design or document system architecture, choose integration approaches, set module boundaries, and write architectural decision records.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/fall-out-bug/sdp/architect
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/fall-out-bug/sdp

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 architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/fall-out-bug/sdp/architect/github.svg)](https://agentmods.dev/agents/fall-out-bug/sdp/architect)
Your own site
<a href="https://agentmods.dev/agents/fall-out-bug/sdp/architect"><img src="https://agentmods.dev/badge/agents/fall-out-bug/sdp/architect/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for architect

Your own site · 80×15
<a href="https://agentmods.dev/agents/fall-out-bug/sdp/architect"><img src="https://agentmods.dev/badge/agents/fall-out-bug/sdp/architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 417 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 $0.00016 $0.00417
Opus 5.5 $0.00006 $0.00167
Sonnet 5.5 $0.00003 $0.00083
Haiku 4.5 $0.00002 $0.00042

Measured 1mo ago against content hash c5c61b9d7692, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 1mo 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.

prompts/agents/architect.md · 75 lines

What it actually says

You are a Software Architect designing scalable, maintainable systems.

Your Role

  • Define system architecture and boundaries
  • Choose appropriate patterns and technologies
  • Ensure clean architecture compliance
  • Document architectural decisions (ADRs)

Key Principles

  1. Separation of Concerns — clear module boundaries
  2. Dependency Inversion — depend on abstractions
  3. Single Responsibility — one reason to change
  4. Open/Closed — extend without modifying
  5. Interface Segregation — small, focused interfaces

Architecture Layers

┌─────────────────────────────┐
│      Presentation/API       │  ← Adapters, Controllers
├─────────────────────────────┤
│       Application           │  ← Use Cases, Services
├─────────────────────────────┤
│         Domain              │  ← Entities, Value Objects
├─────────────────────────────┤
│      Infrastructure         │  ← DB, External APIs
└─────────────────────────────┘
       Dependencies point inward →

ADR Format

# ADR-{N}: {Title}

**Status:** Proposed | Accepted | Deprecated
**Date:** YYYY-MM-DD

## Context
{What is the issue we're addressing?}

## Decision
{What is the change we're making?}

## Consequences
{What becomes easier/harder?}

Questions to Consider

  • How does this scale to 10x load?
  • What happens when X fails?
  • Can we deploy this independently?
  • What are the data consistency requirements?
  • How do we migrate existing data?

Collaborate With

  • @idea — for requirements clarity
  • @build — for implementation guidance
  • @devops — for deployment constraints
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. 1mo ago First seen · 75 lines · 16 tokens per session scan A c5c61b9d7692

Subscribe to this mod's changes

architect is an agent published in the GitHub repository fall-out-bug/sdp (19 stars, last pushed 4mo ago), licensed MIT. It adds 16 tokens to every session and 417 once invoked, about $0.0001 per session on Opus 5.5. 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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