What is nullplayer CLAUDE.md?

Repository-specific instructions for working on the nullplayer codebase. They cover the agent guide, setup, documentation, architecture, and important source files.

Use them when asking an agent to understand, modify, document, or get started with the nullplayer repository.

They give a coding agent the project context it needs before changing code, reducing guesswork about how the repository is organised.

How ad-repo/nullplayer configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to ad-repo/nullplayer. 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/ad-repo/nullplayer/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/ad-repo/nullplayer

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/ad-repo/nullplayer/claude-md/github.svg)](https://agentmods.dev/instructions/ad-repo/nullplayer/claude-md)

Your own site

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

Per session 2,313 This file is loaded in full into every session.

When invoked 2,313 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	$0.02313	$0.02313
Opus 5.5	$0.00925	$0.00925
Sonnet 5.5	$0.00463	$0.00463
Haiku 4.5	$0.00231	$0.00231

Measured yesterday against content hash 381c9c6689b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nullplayer 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 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.

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.

yesterday Changed · +1 lines · +34 tokens per session 381c9c6689b5
2d ago Changed · +2 lines · +33 tokens per session a76b1b2f22f2
3d ago Changed · +16 lines · +250 tokens per session 3fe8b1e303e0
5d ago Changed · +14 tokens per session c584daf2692b
11d ago Changed · +7 lines · +222 tokens per session a76a115e11e1
20d ago Changed · +16 tokens per session f8977921fd70
23d ago Changed · +1 tokens per session 51d543546295
28d ago Changed · +1 lines · +50 tokens per session 044e33aed1bf
1mo ago Changed · +14 lines · +196 tokens per session ce06ef707bc6
1mo ago First seen · 95 lines · 1,497 tokens per session scan A 7c8b330628e9

Subscribe to this mod's changes

nullplayer CLAUDE.md is an instructions file published in the GitHub repository ad-repo/nullplayer (178 stars, last pushed yesterday), with no licence file. It adds 2,313 tokens to every session, about $0.0093 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.

nullplayer CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
nullplayer CLAUDE.mdad-repo/nullplayer	Instructions file	178	yesterday	none	A	2,313	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
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

nullplayer: Instructions file for Claude Code