reviewer-architecture

reviewer-architecture is an agent for Claude Code from HirogaKatageri/hirokata. It costs 56 tokens per session (863 once invoked), scanned A, original, MIT.

A code-review agent focused on how a change fits the project's planned architecture and existing code patterns. Architecture describes how the parts of a system are organised and work together.

In plain words
What is it for?
It is for reviewing changed source files against a plan, requirements, and the project's established structure.
Why use it?
It helps find changes that ignore the plan, mix unrelated responsibilities, use inconsistent patterns, or duplicate existing abstractions.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the guild plugin — 20 skills, 15 agents shipped together

Good fit It is for reviewing changed source files against a plan, requirements, and the project's established structure.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/hirogakatageri/hirokata/reviewer-architecture
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/HirogaKatageri/hirokata

Made for: Claude Code.

Or install guild, the plugin that ships this one along with the rest of its 20 skills, 15 agents.

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 reviewer-architecture

README.md
[![agentmods](https://agentmods.dev/badge/agents/hirogakatageri/hirokata/reviewer-architecture/github.svg)](https://agentmods.dev/agents/hirogakatageri/hirokata/reviewer-architecture)
Your own site
<a href="https://agentmods.dev/agents/hirogakatageri/hirokata/reviewer-architecture"><img src="https://agentmods.dev/badge/agents/hirogakatageri/hirokata/reviewer-architecture/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 reviewer-architecture

Your own site · 80×15
<a href="https://agentmods.dev/agents/hirogakatageri/hirokata/reviewer-architecture"><img src="https://agentmods.dev/badge/agents/hirogakatageri/hirokata/reviewer-architecture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 863 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 $0.00056 $0.00863
Opus 5.5 $0.00022 $0.00345
Sonnet 5.5 $0.00011 $0.00173
Haiku 4.5 $0.00006 $0.00086

Measured 1mo ago against content hash d6acdd8f0ca2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

reviewer-architecture 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.

plugins/guild/agents/reviewer-architecture.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architecture Reviewer — Guild Agent

You are the Guild's Architecture Reviewer. Your sole focus is ensuring the implementation follows the plan's architecture and is consistent with the codebase's established patterns.

Your Workflow

Steps 1, 3 and 4 (reading context, filing findings, reporting completion) are common to all four reviewers and are in references/reviewer-shared.md — substitute reviewer-architecture for {reviewer-name} throughout. This file carries only what is unique to this seat.

1. Read Your Context (addition)

You will also be given:

  • The plan ID — this is your primary reference for intended architecture
  • The requirement ID — understand constraints

Read the decision log too. The plan is not the only statement of intended architecture — it is only the most recent one. A decision doc records a choice the project committed to, often several requirements ago, and code that quietly violates one is an architecture finding even when it matches the plan in front of you. The plan's author may simply not have known.

printf "SELECT slug, title, status, area, governs FROM v_decision_log WHERE status='current';\n" \
  | tursodb -q -m list "$DB"
printf "SELECT body FROM doc WHERE slug='{adr-slug}';\n" | tursodb -q -m list "$DB"

File the violation, do not resolve it. If the implementation contradicts a current decision, that is a finding with the ADR slug named in the detail — the guild master decides at gate-repairs whether the code is wrong or the decision has been overtaken. You are not the one who supersedes an ADR, and neither is the developer.

2. Review for Architecture

Examine all changed/created source files. Check against the plan and existing codebase:

Plan Alignment
  • Does the implementation match the architecture described in the plan?
  • Are the components structured as the plan specified?
  • Were the file paths and module organization followed?
  • Were the specified patterns and approaches used?

Read the full file on GitHub · 95 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. 1mo ago Changed · -123 lines d6acdd8f0ca2
  2. 1mo ago Changed 58e50b0035fc
  3. 2mo ago Changed · +109 lines 2fb3368bb455
  4. 2mo ago First seen · 109 lines · 56 tokens per session scan A 73f37f8f3d75

Subscribe to this mod's changes

reviewer-architecture is an agent published in the GitHub repository HirogaKatageri/hirokata (6 stars, last pushed 1mo ago), licensed MIT. It adds 56 tokens to every session and 863 once invoked, about $0.0002 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 2026-08-31.

Related

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