codebase-overview

codebase-overview is a skill for Claude Code, Codex from cembasaranoglu/crafting-system-claude. It costs 25 tokens per session (208 once invoked), scanned A, original, MIT.

A guide for answering questions about a repository’s structure, runtime areas, and source locations.

In plain words
What is it for?
Use it to explain how a codebase works, find where a feature lives, or map a request to the relevant source paths.
Why use it?
It helps locate the code responsible for a feature and keeps explanations tied to evidence from the project.

Skill for Claude CodeCodex

Part of the crafting-system plugin — 81 skills, 32 agents shipped together

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 skills/cembasaranoglu/crafting-system-claude/codebase-overview
Any agent
npx skills add cembasaranoglu/crafting-system-claude --skill codebase-overview
Clone the repo
git clone --depth 1 https://github.com/cembasaranoglu/crafting-system-claude

Made for: Claude Code, Codex.

Or install crafting-system, the plugin that ships this one along with the rest of its 81 skills, 32 agents.

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 codebase-overview

README.md
[![agentmods](https://agentmods.dev/badge/skills/cembasaranoglu/crafting-system-claude/codebase-overview.svg)](https://agentmods.dev/skills/cembasaranoglu/crafting-system-claude/codebase-overview)
Your own site
<a href="https://agentmods.dev/skills/cembasaranoglu/crafting-system-claude/codebase-overview"><img src="https://agentmods.dev/badge/skills/cembasaranoglu/crafting-system-claude/codebase-overview.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 208 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 $0.00025 $0.00208
Opus 5 $0.00013 $0.00104
Sonnet 5 $0.00005 $0.00042
Haiku 4.5 $0.00003 $0.00021

Measured yesterday against content hash 2194fb1f70f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codebase-overview 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.

cowork/skills/templates-library/references/.claude/skills/codebase-overview/SKILL.md · 39 lines

What it actually says

Codebase Overview Skill

Purpose

Help Claude produce evidence-backed codebase overviews.

When to use

Use when the user asks how the project works, where something lives, or what path owns a feature.

Inputs to inspect first

  • CLAUDE.md
  • docs/AI_CONTEXT.md
  • docs/PROJECT_GLOSSARY.md
  • docs/FEATURE_INVENTORY.md
  • relevant source paths

Rules

  • Inspect source evidence before answering.
  • Distinguish facts, assumptions, recommendations, unknowns, blockers, and validation status.
  • Do not modify source code unless the user explicitly asks.
  • Do not claim tests/builds/deployments ran unless they actually ran.

Output

Produce:

  1. direct answer
  2. evidence paths
  3. confidence
  4. unknowns
  5. next action
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 · 39 lines · 25 tokens per session scan A 2194fb1f70f5

Subscribe to this mod's changes

codebase-overview is a skill published in the GitHub repository cembasaranoglu/crafting-system-claude (5 stars, last pushed 4mo ago), licensed MIT. It adds 25 tokens to every session and 208 once invoked, about $0.0001 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.

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