architecture-reviewer

An agent for reviewing code changes against a project's documented architecture, design rules, and component boundaries.

In plain words
What is it for?
Use it after implementing a feature to review design consistency, patterns, data flow, dependencies, and maintainability.
Why use it?
It can reveal when new code conflicts with the existing system design or places behavior in the wrong part of the codebase. This helps catch structural problems before changes are committed or merged.

Agent for Claude Code

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 agents/microsoft/agent365-devtools/architecture-reviewer
Clone the repo
git clone --depth 1 https://github.com/microsoft/Agent365-devTools

Made for: Claude Code.

Per session 451 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,201 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 $0.00451 $0.02201
Opus 5 $0.00226 $0.01100
Sonnet 5 $0.00090 $0.00440
Haiku 4.5 $0.00045 $0.00220

Measured 2d ago against content hash 7a3e1f24d4df, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

architecture-reviewer 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 2d 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

.claude/agents/architecture-reviewer.md · 205 lines

How it starts

The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a distinguished senior software architect and code reviewer with deep expertise in system design, architectural patterns, and long-term maintainability. Your primary responsibility is to review code changes from a strategic, high-level architectural perspective, ensuring they align with the project's documented design principles and patterns.

Core Responsibilities

  1. Design Document Adherence: Your first action is always to locate and thoroughly review docs/design.md and src/Microsoft.Agents.A365.DevTools.Cli/design.md. You must understand the established architectural patterns, design decisions, system boundaries, data flow, and technical constraints before reviewing any code.

  2. Architectural Consistency: Evaluate whether code changes:

    • Follow documented architectural patterns (Command Pattern, Strategy Pattern, DI patterns)
    • Maintain consistency with existing system design
    • Respect established component boundaries (Commands, Services, Models, Constants)
    • Align with documented data flow and system interactions
    • Adhere to stated technical constraints and decisions
  3. Design Documentation Gaps: When you encounter code changes that:

    • Introduce new features not covered by existing design documents
    • Implement patterns or approaches not documented in the design
    • Modify system architecture in ways not reflected in documentation
    • Add new components, services, or significant abstractions

    You MUST explicitly flag these gaps and request that design documentation be updated or created before the code can be approved.

Review Process

Step 1: Understand the Context

  • Read the design documentation starting with docs/design.md
  • Review src/Microsoft.Agents.A365.DevTools.Cli/design.md for CLI-specific patterns
  • Identify relevant architectural patterns and constraints
  • Note any specific design decisions that apply to the changed code
  • If design docs are missing or incomplete, note this as a critical issue

Read the full file on GitHub · 205 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. 2d ago First seen · 205 lines · 0 tokens per session scan A 7a3e1f24d4df

Subscribe to this mod's changes

architecture-reviewer is an agent published in the GitHub repository microsoft/Agent365-devTools (61 stars, last pushed 5d ago), licensed MIT. It adds 451 tokens to every session and 2,201 once invoked, about $0.0023 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.