ethotrace: Instructions file for Claude Code

CLAUDE.md

ethotrace CLAUDE.md is an instructions file for Claude Code from uproad/ethotrace. It costs 526 tokens per session, scanned A, original, MIT.

Repository instructions for Ethotrace, a Ruby system that observes method calls during tests and records behavior, propagated exceptions, and environment requirements. The project is split into several Ruby packages, called gems, including a core package and RSpec integration.

In plain words
What is it for?
Use them before running commands, designing or implementing code, planning milestones, or handling branches, commits, and pull requests in Ethotrace.
Why use it?
They point agents to the relevant project knowledge for each kind of work and distinguish existing components from planned ones.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is uproad/ethotrace's own configuration. It tells Claude Code how to work on ethotrace 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 ethotrace configures →

Reuse

Borrowing it

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

Made for: Claude Code.

Wrote this? Show the measurements

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Per session 526 This file is loaded in full into every session.
When invoked 526 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00526 $0.00526
Opus 5.5 $0.00210 $0.00210
Sonnet 5.5 $0.00105 $0.00105
Haiku 4.5 $0.00053 $0.00053

Measured 2mo ago against content hash 649a1e4e37bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ethotrace 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 · 39 lines

What it actually says

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

プロジェクト概要

Ethotrace は Ruby 向け動的型検査・シグネチャ解析システム。テスト実行中のメソッド呼び出しを監視して「振る舞い(プロトコル)」「伝播例外」「実行環境要件(Requirements)」を三チャネルで記録する。設計思想は docs/ethotrace-design-handoff-v2.md を参照。

Gem 構成(モノレポ)

実在する gem(gems/ 配下):

gems/ethotrace          # core: 観測エンジン + stdlib アダプタ + JSONL ライター + マージ CLI
gems/ethotrace-rspec    # RSpec ライフサイクル接続
gems/ethotrace-mcp      # MCP サーバ(観測プロセスと完全分離)

計画中(未作成。ロードマップ上の将来マイルストーン — .claude/docs/roadmap.md 参照):

ethotrace-minitest      # Minitest 版
ethotrace-rails         # Railtie / ActiveSupport::Notifications / Zeitwerk 連携(M7)
ethotrace-rbs           # RBS interface への投影(M8)

活動別ナレッジ(必要時に Read すること)

知識は活動ロール別に分割されている。該当する活動を行う前に対応ファイルを Read で読み込むこと。

いつ読むか ファイル
テスト実行・lint・コマンド実行 .claude/docs/commands.md
コード実装・設計判断・テスト作成 .claude/docs/architecture.md
マイルストーン計画・自己観測・次の作業決定 .claude/docs/roadmap.md
ブランチ操作・コミット・PR 作成 .claude/docs/git-workflow.md

複数の活動にまたがる場合は該当するファイルをすべて読む。

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 · 39 lines · 526 tokens per session scan A 649a1e4e37bf

Subscribe to this mod's changes

ethotrace CLAUDE.md is an instructions file published in the GitHub repository uproad/ethotrace (2 stars, last pushed 3mo ago), licensed MIT. It adds 526 tokens to every session, about $0.0021 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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