What is 40kdc-data CLAUDE.md?

A repository guide for Claude Code that explains the 40kdc-data project, its folder layout, data schema rules, and intellectual-property guidelines.

Use it when asking Claude Code to explore, edit, or extend the 40kdc-data repository.

It gives the coding agent project-specific context and boundaries before it changes code or data.

How wn-mitch/40kdc-data configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to wn-mitch/40kdc-data. 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/wn-mitch/40kdc-data/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/wn-mitch/40kdc-data

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/wn-mitch/40kdc-data/claude-md/github.svg)](https://agentmods.dev/instructions/wn-mitch/40kdc-data/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/wn-mitch/40kdc-data/claude-md"><img src="https://agentmods.dev/badge/instructions/wn-mitch/40kdc-data/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/wn-mitch/40kdc-data/claude-md"><img src="https://agentmods.dev/badge/instructions/wn-mitch/40kdc-data/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 6,230 This file is loaded in full into every session.

When invoked 6,230 The same file — it is already loaded in full.

Security scan A 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.

Model	Per session	Once invoked
Fable 5.1	$0.06230	$0.06230
Opus 5.5	$0.02492	$0.02492
Sonnet 5.5	$0.01246	$0.01246
Haiku 4.5	$0.00623	$0.00623

Measured 2mo ago against content hash c636cac17757, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

40kdc-data CLAUDE.md scanned grade A 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 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

- **`execSync` runs via `cmd.exe` on Windows**, where `^` is the escape char — a git

CLAUDE.md · 401 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 · 401 lines · 6,230 tokens per session scan A c636cac17757

Subscribe to this mod's changes

40kdc-data CLAUDE.md is an instructions file published in the GitHub repository wn-mitch/40kdc-data (33 stars, last pushed today), with no licence file. It adds 6,230 tokens to every session, about $0.0249 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.

Databases Writing and docs

40kdc-data CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
40kdc-data CLAUDE.mdwn-mitch/40kdc-data	Instructions file	33	today	none	A	6,230	Claude Code
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next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	3d ago	MIT	A	4,313	Codex, OpenCode

40kdc-data: Instructions file for Claude Code