What is nanocoder CLAUDE.md?

Project-specific instructions for coding agents working on Nano-Collective/nanocoder. They document the project file, development commands, how to build and run it, and how to run tests before committing.

Use them when changing nanocoder code, building or running the project, and choosing the right tests before a commit.

They give an agent the project’s expected commands and checks, reducing mistakes caused by guessing how the repository works.

How Nano-Collective/nanocoder configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Nano-Collective/nanocoder. 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/Nano-Collective/nanocoder/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Nano-Collective/nanocoder

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/nano-collective/nanocoder/claude-md/github.svg)](https://agentmods.dev/instructions/nano-collective/nanocoder/claude-md)

Your own site

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

Per session 3,436 This file is loaded in full into every session.

When invoked 3,436 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	$0.03436	$0.03436
Opus 5.5	$0.01374	$0.01374
Sonnet 5.5	$0.00687	$0.00687
Haiku 4.5	$0.00344	$0.00344

Measured yesterday against content hash 2bff37ec8d03, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nanocoder 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 · 171 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 · +16 lines · +539 tokens per session 2bff37ec8d03
1mo ago Changed · +1 lines · +33 tokens per session 3d4af6b5af2b
1mo ago Changed · +6 lines · +114 tokens per session 9cce8a4cd3a3
1mo ago Changed · -1 lines · +42 tokens per session a0b20b0d7faa
2mo ago Changed · +15 tokens per session 31d7b5d7d32d
2mo ago First seen · 149 lines · 2,693 tokens per session scan A f826279c0680

Subscribe to this mod's changes

nanocoder CLAUDE.md is an instructions file published in the GitHub repository Nano-Collective/nanocoder (2,552 stars, last pushed yesterday), with no licence file. It adds 3,436 tokens to every session, about $0.0137 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.

LLM ai ai-agents ai-coding coding-agents llm-inference

nanocoder CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
nanocoder CLAUDE.mdNano-Collective/nanocoder	Instructions file	2.6k	yesterday	none	A	3,436	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

nanocoder: Instructions file for Claude Code