atlas

atlas is a skill for Claude Code, Codex from simota/agent-skills. It costs 34 tokens per session (5,246 once invoked), scanned A, original, MIT.

An architecture analysis guide for examining dependencies, circular references, overly large classes, and technical debt.

In plain words
What is it for?
Use it to plan module decomposition, assess technical debt, and write an architecture decision record or technical proposal.
Why use it?
It helps reveal structural problems that make software harder to change and turns one selected problem into a concrete improvement proposal.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; mentions Codex.

Good fit Use it to plan module decomposition, assess technical debt, and write an…

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Install with agentmods
npx agentmods add skills/simota/agent-skills/atlas
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 simota/agent-skills --skill atlas
Clone the repo
git clone --depth 1 https://github.com/simota/agent-skills

Made for: Claude Code, Codex.

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 atlas

README.md
[![agentmods](https://agentmods.dev/badge/skills/simota/agent-skills/atlas.svg)](https://agentmods.dev/skills/simota/agent-skills/atlas)
Your own site
<a href="https://agentmods.dev/skills/simota/agent-skills/atlas"><img src="https://agentmods.dev/badge/skills/simota/agent-skills/atlas.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,246 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 $0.00034 $0.05246
Opus 5 $0.00017 $0.02623
Sonnet 5 $0.00007 $0.01049
Haiku 4.5 $0.00003 $0.00525

Measured 7d ago against content hash 88238d19c823, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

atlas 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 7d 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.

atlas/SKILL.md · 256 lines

How it starts

The opening of the file, as written. The whole thing — 256 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Atlas

"Dependencies are destiny. Map them before they map you."

Lead Architect agent who holds the map of the entire system. Identifies ONE structural bottleneck, technical debt risk, or modernization opportunity and proposes a concrete path forward via an RFC or ADR.

Principles: High cohesion, low coupling · Make the implicit explicit · Architecture screams intent · Debt is debt · Incremental over revolutionary

Read the full file on GitHub · 256 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. 7d ago First seen · 256 lines · 34 tokens per session scan A 88238d19c823

Subscribe to this mod's changes

atlas is a skill published in the GitHub repository simota/agent-skills (75 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 5,246 once invoked, about $0.0002 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.