What is cc101 CLAUDE.md?

Claude Code instructions for cc101, a Korean beginner guide to Claude Code. They describe the project, its technology choices, commands, and folder layout.

Understanding cc101’s structure, technology stack, and available commands.

They give Claude Code the project context needed to work with the guide’s files and commands.

How fivetaku/cc101 configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to fivetaku/cc101. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/fivetaku/cc101/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/fivetaku/cc101

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/fivetaku/cc101/claude-md/github.svg)](https://agentmods.dev/instructions/fivetaku/cc101/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/fivetaku/cc101/claude-md"><img src="https://agentmods.dev/badge/instructions/fivetaku/cc101/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/fivetaku/cc101/claude-md"><img src="https://agentmods.dev/badge/instructions/fivetaku/cc101/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,173 This file is loaded in full into every session.

When invoked 1,173 The same file — it is already loaded in full.

Security scan A 0 findings. 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.

Model	Per session	Once invoked
Fable 5.1	$0.01173	$0.01173
Opus 5.5	$0.00469	$0.00469
Sonnet 5.5	$0.00235	$0.00235
Haiku 4.5	$0.00117	$0.00117

Measured 2mo ago against content hash 88b4564e4766, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cc101 CLAUDE.md 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.

CLAUDE.md · 108 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

2mo ago First seen · 108 lines · 1,173 tokens per session scan A 88b4564e4766

Subscribe to this mod's changes

cc101 CLAUDE.md is an instructions file published in the GitHub repository fivetaku/cc101 (304 stars, last pushed 1mo ago), with no licence file. It adds 1,173 tokens to every session, about $0.0047 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 2026-08-30.

cc101 CLAUDE.md next to 6 instructions from other repositories
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cc101 CLAUDE.mdfivetaku/cc101	Instructions file	304	1mo ago	none	A	1,173	Claude Code
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cc101: Instructions file for Claude Code