atlas

atlas is a skill for Claude Code from nicodiansk/turbocharge. It costs 49 tokens per session (1,484 once invoked), scanned A, original, MIT.

A project domain map named ATLAS.md that records where important code and documentation live, what modules do, and how integrations connect. It builds or updates the map by reading the actual repository first.

In plain words
What is it for?
Use it to document project structure, entry points, domain models, external services, key symbols, and integration points.
Why use it?
It gives coding agents a concise guide to an unfamiliar codebase and reduces time spent searching or relying on incorrect assumptions.

Skill for Claude Code

Written for Claude Code: SessionStart hook event. Also seen: mentions CLAUDE.md.

Part of the turbocharge plugin — 9 skills, 5 agents, 1 hook shipped together

Good fit Use it to document project structure, entry points, domain models, external services, key symbols, and integration points.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nicodiansk/turbocharge/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 nicodiansk/turbocharge --skill atlas
Clone the repo
git clone --depth 1 https://github.com/nicodiansk/turbocharge

Made for: Claude Code.

Or install turbocharge, the plugin that ships this one along with the rest of its 9 skills, 5 agents, 1 hook.

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/nicodiansk/turbocharge/atlas/github.svg)](https://agentmods.dev/skills/nicodiansk/turbocharge/atlas)
Your own site
<a href="https://agentmods.dev/skills/nicodiansk/turbocharge/atlas"><img src="https://agentmods.dev/badge/skills/nicodiansk/turbocharge/atlas/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 atlas

Your own site · 80×15
<a href="https://agentmods.dev/skills/nicodiansk/turbocharge/atlas"><img src="https://agentmods.dev/badge/skills/nicodiansk/turbocharge/atlas.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,484 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 $0.00049 $0.01484
Opus 5 $0.00024 $0.00742
Sonnet 5 $0.00010 $0.00297
Haiku 4.5 $0.00005 $0.00148

Measured 11d ago against content hash 2e3ecea9661b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 11d 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.

skills/atlas/SKILL.md · 159 lines

How it starts

The opening of the file, as written. The whole thing — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Atlas — Project Domain Map

Generate or update the semantic domain map for this project.

Announce: "Using atlas to map this project's domain."

The Iron Law

NO ATLAS WITHOUT READING THE CODEBASE FIRST

Do not generate from assumptions or memory. Read the actual code, configs, and docs.

Step 1: Detect Mode

  • If ATLAS.md does NOT exist in the project root → Generate mode
  • If ATLAS.md exists → Update mode

Step 2: Read the Codebase

Regardless of mode:

  1. Read project structure (directory listing, key config files)
  2. Read CLAUDE.md if it exists — understand what's already documented (don't duplicate it)
  3. Read entry points (main files, CLI entry, API routers, job schedulers)
  4. Read domain models (data classes, schemas, database models)
  5. Scan integration configs (env files, connection strings, external service clients)

Step 2b: Read Codemap Index (if available)

If .codemap/.codemap.json exists in the project root:

  1. Read .codemap/.codemap.json — it contains a manifest with directories (list of indexed paths) and stats (total files, total symbols).
  2. For each directory in the manifest, read .codemap/<dir>/.codemap.json — each contains files with symbol entries (name, type, lines, language).
  3. Use this data to pre-populate:
    • Module Map — each directory with its file count and key files
    • Key Symbols — pick the 20-30 most important symbols (classes, exported functions) with their file:line-range
  4. You still need to fill in the semantic layer manually: Where to Look (intent→file mapping), Entry Points (which files boot the app), Integration Points (external services), Conventions & Gotchas.

This shortcut reduces atlas generation from ~20 tool calls to ~5. If .codemap/ does not exist, skip this step entirely — fall through to the standard codebase scan in Step 2.

Step 3: Generate or Update

Generate Mode (no ATLAS.md)

Create ATLAS.md in the project root following the format in Step 4.

Read the full file on GitHub · 159 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. 11d ago First seen · 159 lines · 49 tokens per session scan A 2e3ecea9661b

Subscribe to this mod's changes

atlas is a skill published in the GitHub repository nicodiansk/turbocharge (2 stars, last pushed 1mo ago), licensed MIT. It adds 49 tokens to every session and 1,484 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 2026-08-31.

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