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quirk: Instructions file for Claude Code

CLAUDE.md

quirk CLAUDE.md is an instructions file for Claude Code from zpyoung/quirk. It costs 253 tokens per session, scanned A, original, no licence file.

Project instructions for Quirk that define how to report issues you cannot address during a session, using typed artifacts instead of vague notes.

In plain words
What is it for?
Handling blocked tasks, recording issues in the required format, and following Quirk’s rules for session reporting.
Why use it?
They make unresolved work visible and structured so it is not hidden in general explanation.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is zpyoung/quirk's own configuration. It tells Claude Code how to work on quirk itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything quirk configures →

not rated 6repo 5d ago A scan 253 tokens custom licence
View source ↗ zpyoung/quirk
Reuse

Borrowing it

Nothing to install: this file belongs to zpyoung/quirk. 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/zpyoung/quirk/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/zpyoung/quirk

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.

agentmods badge for quirk CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/zpyoung/quirk/claude-md/github.svg)](https://agentmods.dev/instructions/zpyoung/quirk/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/zpyoung/quirk/claude-md"><img src="https://agentmods.dev/badge/instructions/zpyoung/quirk/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.

agentmods 80×15 button for quirk CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/zpyoung/quirk/claude-md"><img src="https://agentmods.dev/badge/instructions/zpyoung/quirk/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 253 This file is loaded in full into every session.
When invoked 253 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00253 $0.00253
Opus 5.5 $0.00101 $0.00101
Sonnet 5.5 $0.00051 $0.00051
Haiku 4.5 $0.00025 $0.00025

Measured 2mo ago against content hash 9b608c25e627, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

quirk 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 · 18 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.

  1. 2mo ago First seen · 18 lines · 253 tokens per session scan A 9b608c25e627

Subscribe to this mod's changes

quirk CLAUDE.md is an instructions file published in the GitHub repository zpyoung/quirk (6 stars, last pushed 5d ago), with no licence file. It adds 253 tokens to every session, about $0.0010 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 2026-08-31.

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