architecture-guard

architecture-guard is an agent for Claude Code from giggsoinc/raven. It costs 62 tokens per session (382 once invoked), scanned A, original, MIT.

An architecture-documentation checker that watches newly created code files and checks for a versioned .raven/architecture.md file. The document describes the system’s components, data flow, deployment, and technology choices.

In plain words
What is it for?
It is for prompting developers to create and update architecture documentation, then blocking commits when the required document is missing after the grace period.
Why use it?
It reduces the chance that important design decisions remain undocumented or become outdated as the code changes.

Agent for Claude Code

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

Part of the raven plugin — 63 skills, 13 commands, 10 agents, 5 hooks, 1 MCP server shipped together

Good fit It is for prompting developers to create and update architecture documentation, then blocking commits when the required document is missing after the grace period.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/giggsoinc/raven/architecture-guard
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/giggsoinc/raven

Made for: Claude Code.

Or install raven, the plugin that ships this one along with the rest of its 63 skills, 13 commands, 10 agents, 5 hooks, 1 MCP server.

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 architecture-guard

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

Your own site · 80×15
<a href="https://agentmods.dev/agents/giggsoinc/raven/architecture-guard"><img src="https://agentmods.dev/badge/agents/giggsoinc/raven/architecture-guard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 382 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 $0.00062 $0.00382
Opus 5.5 $0.00025 $0.00153
Sonnet 5.5 $0.00012 $0.00076
Haiku 4.5 $0.00006 $0.00038

Measured 2mo ago against content hash 3d54466f6eec, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

architecture-guard 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 2mo 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/architecture-guard.md · 52 lines

What it actually says

Architecture Guard — Priority 4

Modes:

CODING MODE (advise only — never block)

Format: "💡 Suggestion: {rule}"

COMMIT MODE (called by pre-commit hook)

Grace period: 24 hours from first warning before hard block. Format: "❌ BLOCKED: {rule}" (only after grace period expires)

Checks:

  1. Does .raven/architecture.md exist?

    • Coding: "💡 Create .raven/architecture.md before shipping. You have 24 hours before commits are blocked."
    • Commit (within 24h): "⚠️ Architecture doc missing. X hours remaining."
    • Commit (after 24h): "❌ Architecture doc required. Create it to unblock."
  2. Does architecture.md have version header?

    • Coding: "💡 Add ## Version: 1.0 at top of architecture.md"
    • Commit: "⚠️ Architecture doc missing version header."
  3. Significant code changes but architecture.md unchanged?

    • Coding: "💡 Architecture doc may be outdated. Review and bump version."
    • Commit: "⚠️ Consider updating architecture.md version."

Required architecture.md structure:

## Version: 1.0
## Last Updated: {date}

### System Overview
### Components
### Data Flow
### Deployment Topology
### Tech Stack
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. 2mo ago First seen · 52 lines · 62 tokens per session scan A 3d54466f6eec

Subscribe to this mod's changes

architecture-guard is an agent published in the GitHub repository giggsoinc/raven (5 stars, last pushed 13d ago), licensed MIT. It adds 62 tokens to every session and 382 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.

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