arch-auditor

arch-auditor is an agent for coding agents from orin-dx/agent-plugins. It costs 264 tokens per session (1,487 once invoked), scanned A, original, MIT.

An agent for checking whether a proposed technical design fits the wider architecture of a codebase, including its module boundaries and shared rules.

In plain words
What is it for?
Use it to review draft specifications against the project’s architecture model and cross-codebase invariants.
Why use it?
It catches conflicts between a new design and the existing system before the design is approved.

Agent

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/orin-dx/agent-plugins/arch-auditor
Clone the repo
git clone --depth 1 https://github.com/orin-dx/agent-plugins

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 arch-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/orin-dx/agent-plugins/arch-auditor.svg)](https://agentmods.dev/agents/orin-dx/agent-plugins/arch-auditor)
Your own site
<a href="https://agentmods.dev/agents/orin-dx/agent-plugins/arch-auditor"><img src="https://agentmods.dev/badge/agents/orin-dx/agent-plugins/arch-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 264 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,487 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 $0.00264 $0.01487
Opus 5 $0.00132 $0.00744
Sonnet 5 $0.00053 $0.00297
Haiku 4.5 $0.00026 $0.00149

Measured yesterday against content hash a60b4083310c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

arch-auditor 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 yesterday.

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/scribe/agents/arch-auditor.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<load_first> Load shared/references/workspace-conventions.md before searching for the persisted model — it names where the architecture model and gated specs live on disk, and what an absent model does and doesn't prove. </load_first>

Check mode — arch-audit@1 conforming to shared/schemas/arch-[email protected]:

Read the full file on GitHub · 70 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. yesterday First seen · 70 lines · 264 tokens per session scan A a60b4083310c

Subscribe to this mod's changes

arch-auditor is an agent published in the GitHub repository orin-dx/agent-plugins (1 stars, last pushed yesterday), licensed MIT. It adds 264 tokens to every session and 1,487 once invoked, about $0.0013 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.