d2-architect

d2-architect is a skill for Claude Code from diegomarino/claude-toolshed. It costs 18 tokens per session (1,397 once invoked), scanned B, original, no licence file.

Codebase diagrams are visual maps of how parts of a software project are organised and connected. This tool creates relevant diagrams by scanning the project's structure.

In plain words
What is it for?
Making diagrams for code reviews, documentation, onboarding, and understanding project organisation.
Why use it?
It helps explain an unfamiliar codebase without manually drawing its structure.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the d2 plugin — 7 skills, 1 agent shipped together

Good fit Making diagrams for code reviews, documentation, onboarding, and understanding project organisation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/diegomarino/claude-toolshed/d2-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.

Any agent
npx skills add diegomarino/claude-toolshed --skill d2-architect
Clone the repo
git clone --depth 1 https://github.com/diegomarino/claude-toolshed

Made for: Claude Code.

Or install d2, the plugin that ships this one along with the rest of its 7 skills, 1 agent.

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 d2-architect

README.md
[![agentmods](https://agentmods.dev/badge/skills/diegomarino/claude-toolshed/d2-architect/github.svg)](https://agentmods.dev/skills/diegomarino/claude-toolshed/d2-architect)
Your own site
<a href="https://agentmods.dev/skills/diegomarino/claude-toolshed/d2-architect"><img src="https://agentmods.dev/badge/skills/diegomarino/claude-toolshed/d2-architect/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 d2-architect

Your own site · 80×15
<a href="https://agentmods.dev/skills/diegomarino/claude-toolshed/d2-architect"><img src="https://agentmods.dev/badge/skills/diegomarino/claude-toolshed/d2-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,397 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00018 $0.01397
Opus 5 $0.00009 $0.00698
Sonnet 5 $0.00004 $0.00279
Haiku 4.5 $0.00002 $0.00140

Measured 9d ago against content hash 40452bafe9b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

d2-architect scanned grade B with 1 finding 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 9d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

PLUGIN_DIR=$(find "$HOME/.claude/plugins/cache" -type d -name "d2" -path "*/skills/d2" 2>/dev/null | head -1)
plugins/d2/skills/d2-architect/SKILL.md · 150 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 9d ago First seen · 150 lines · 18 tokens per session scan B 40452bafe9b9

Subscribe to this mod's changes

d2-architect is a skill published in the GitHub repository diegomarino/claude-toolshed (58 stars, last pushed 5mo ago), with no licence file. It adds 18 tokens to every session and 1,397 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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