What is rcompare CLAUDE.md?

A project instruction file for rcompare, a Rust tool for comparing files and folders. It sets architectural and safety guidelines, including keeping comparison logic separate from the user interface.

Use it when developing rcompare’s comparison engine or interface on Linux, Windows, or macOS.

It helps prevent changes that mix unrelated parts of the program or reduce cross-platform compatibility. It also reminds contributors to limit unsafe Rust code.

How aecs4u/rcompare configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to aecs4u/rcompare. 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/aecs4u/rcompare/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/aecs4u/rcompare

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/aecs4u/rcompare/claude-md/github.svg)](https://agentmods.dev/instructions/aecs4u/rcompare/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/aecs4u/rcompare/claude-md"><img src="https://agentmods.dev/badge/instructions/aecs4u/rcompare/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/aecs4u/rcompare/claude-md"><img src="https://agentmods.dev/badge/instructions/aecs4u/rcompare/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 130 This file is loaded in full into every session.

When invoked 130 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 original 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	$0.00130	$0.00130
Opus 5.5	$0.00052	$0.00052
Sonnet 5.5	$0.00026	$0.00026
Haiku 4.5	$0.00013	$0.00013

Measured 2mo ago against content hash a91560ed31ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rcompare 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 · 15 lines

What it actually says

RCompare - Claude Code Instructions

This file contains project-specific instructions for Claude Code when working on the RCompare project.

Project Context

RCompare is a high-performance file and directory comparison utility written in Rust, inspired by Beyond Compare and following the architectural patterns of Czkawka.

Development Guidelines

Follow the architecture defined in ARCHITECTURE.md
Maintain strict separation between rcompare_core (business logic) and UI layers
Write safe Rust code; minimize use of unsafe blocks
Ensure all changes maintain cross-platform compatibility (Linux, Windows, macOS)

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 · 15 lines · 130 tokens per session scan A a91560ed31ae

Subscribe to this mod's changes

rcompare CLAUDE.md is an instructions file published in the GitHub repository aecs4u/rcompare (16 stars, last pushed 3mo ago), licensed MIT. It adds 130 tokens to every session, about $0.0005 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.

comparison folder software

rcompare CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
rcompare CLAUDE.mdaecs4u/rcompare	Instructions file	16	3mo ago	MIT	A	130	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	yesterday	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

rcompare: Instructions file for Claude Code