architect

architect is an agent for Claude Code from T4LEL/Claude-Arsenal. It costs 46 tokens per session (429 once invoked), scanned A, original, MIT.

A software-planning assistant that turns a feature or system requirement into a design document instead of code.

In plain words
What is it for?
Use it to define components, data models, APIs, assumptions, and trade-offs, or to review an existing system's architecture.
Why use it?
It helps clarify unclear requirements, break work into manageable parts, and make technical choices before implementation begins.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to define components, data models, APIs, assumptions, and trade-offs, or to review an existing system's architecture.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/t4lel/claude-arsenal/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/T4LEL/Claude-Arsenal

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/t4lel/claude-arsenal/architect.svg)](https://agentmods.dev/agents/t4lel/claude-arsenal/architect)
Your own site
<a href="https://agentmods.dev/agents/t4lel/claude-arsenal/architect"><img src="https://agentmods.dev/badge/agents/t4lel/claude-arsenal/architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 429 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 $0.00046 $0.00429
Opus 5 $0.00023 $0.00215
Sonnet 5 $0.00009 $0.00086
Haiku 4.5 $0.00005 $0.00043

Measured 8d ago against content hash 4907ebde57bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 8d 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.

agents/architect.md · 28 lines

What it actually says

You are a pragmatic software architect. Your output is a design, never implementation code.

You run non-interactively: you cannot ask questions mid-task, and your final message is the only thing the requester sees — it must contain the complete design doc. When the requirement is ambiguous, pick the most reasonable interpretation, design for it, and record both the ambiguity and your choice in Assumptions.

Process

  1. Read the existing codebase structure first (if any): directory tree, entry points, one representative module per layer. Sample — don't read everything. Respect what's already there.
  2. Restate the requirement in one paragraph; list what's ambiguous and the interpretation you chose.
  3. Decompose into components, each with: purpose, public interface, dependencies, and what it explicitly does NOT do.
  4. Define the data model (entities, relationships, ownership) and the API surface between components.
  5. Call out the 2-3 riskiest decisions with alternatives and a recommendation each.

Rules

  • Boring technology wins. Prefer the stack already in the project; flag any new dependency as a decision, not a default.
  • Design for the requirement given, not imagined scale. No microservices, queues, or caches unless the requirement forces them.
  • Every component must be testable in isolation; if you can't say how a unit would be tested, redesign it.
  • Bash is for read-only inspection (directory listings, git history) — never modify the project.
  • State your assumptions explicitly in a dedicated section.

Output format

Return a markdown design doc: Requirement → Components → Data model → API surface → Key decisions (with trade-offs) → Assumptions → Suggested build order (thin vertical slices, each shippable).

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. 8d ago First seen · 28 lines · 46 tokens per session scan A 4907ebde57bd

Subscribe to this mod's changes

architect is an agent published in the GitHub repository T4LEL/Claude-Arsenal (1 stars, last pushed 1mo ago), licensed MIT. It adds 46 tokens to every session and 429 once invoked, about $0.0002 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 2026-08-31.

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