What is claude_config CLAUDE.md?

Project instructions for Claude Code, an AI coding assistant, in the timholy/claude_config repository. They describe the project’s writing style, usage rules, Julia versions, and debugging guidance.

They are for guiding text changes, Julia development, and debugging in that repository.

They give Claude Code consistent project-specific rules instead of leaving those decisions implicit.

How timholy/claude_config configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to timholy/claude_config. 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/timholy/claude_config/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/timholy/claude_config

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/timholy/claude_config/claude-md/github.svg)](https://agentmods.dev/instructions/timholy/claude_config/claude-md)

Your own site

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

Per session 1,716 This file is loaded in full into every session.

When invoked 1,716 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	$0.01716	$0.01716
Opus 5.5	$0.00686	$0.00686
Sonnet 5.5	$0.00343	$0.00343
Haiku 4.5	$0.00172	$0.00172

Measured 8d ago against content hash 9a826ebbc2b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude_config 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 8d 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 · 136 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.

8d ago Changed · -43 lines · -453 tokens per session 9a826ebbc2b5
1mo ago Changed · +8 lines · +110 tokens per session a9fa74c89e3b
1mo ago Changed · +6 lines · +118 tokens per session 78207b9a9438
2mo ago First seen · 165 lines · 1,941 tokens per session scan A 42861d242ee6

Subscribe to this mod's changes

claude_config CLAUDE.md is an instructions file published in the GitHub repository timholy/claude_config (75 stars, last pushed yesterday), with no licence file. It adds 1,716 tokens to every session, about $0.0069 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.

claude_config CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
claude_config CLAUDE.mdtimholy/claude_config	Instructions file	75	yesterday	none	A	1,716	Claude Code
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

claude_config: Instructions file for Claude Code