Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/sammcj/m2e/claude-mdgit clone --depth 1 https://github.com/sammcj/m2eWrote 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.
[](https://agentmods.dev/instructions/sammcj/m2e/claude-md)<a href="https://agentmods.dev/instructions/sammcj/m2e/claude-md"><img src="https://agentmods.dev/badge/instructions/sammcj/m2e/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.01004 | $0.01004 |
| Opus 5 | $0.00502 | $0.00502 |
| Sonnet 5 | $0.00201 | $0.00201 |
| Haiku 4.5 | $0.00100 | $0.00100 |
Grade A, and why
m2e 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
M2E is a text conversion application that converts American English to standard international / British English spellings with a tongue-and-cheek approach to it's functionality naming, with optional imperial-to-metric unit conversion. Built with Go backend and React frontend using Wails v2 framework.
Core Architecture
Main Components
- Backend: Go application (
app.go,main.go) using Wails v2 for native desktop app - Frontend: React SPA in
frontend/directory with Vite build system - Converter Package: Core logic in
pkg/converter/handles text conversion and unit processing - Multiple Interface Modes: GUI (Wails), CLI with integrated report mode, HTTP API server, and MCP server
Key Files
app.go: Application binding and frontend interface methodspkg/converter/converter.go: Core conversion logic with embedded dictionariespkg/converter/unit_*.go: Unit conversion system (detector, patterns, config)pkg/converter/codeaware.go: Code-aware conversion preserving syntaxcmd/: Different executable entry points (CLI with report mode, server, MCP)pkg/report/: Report generation and analysis functionality
Development Commands
Build and Test
make # Default: lint, test, build all
make lint # Run golangci-lint and formatting checks
make test # Run all tests in tests/ directory
make build # Build all applications (GUI, CLI, server, MCP)
Build VSCode Extension
make vscode-build # Build VSCode extension for M2E - This is already triggered by `make build`
Individual Builds
make build-wails # GUI application (macOS app bundle)
make build-cli # Command-line interface with integrated report mode
make build-server # HTTP API server
make build-mcp # MCP server for AI tools
make vscode-build # VSCode extension
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.
- 4d ago First seen · 122 lines · 1,004 tokens per session scan A f4f96b1078c4
m2e CLAUDE.md is an instructions file published in the GitHub repository sammcj/m2e (5 stars, last pushed 5d ago), licensed MIT. It adds 1,004 tokens to every session, about $0.0050 per session on Opus 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.
Other instructions, from other repositories
zeroclaw CLAUDE.md
Claude Code instructions for zeroclaw-labs/zeroclaw, covering claude.md — zeroclaw (claude code), claude code settings, hooks and slash commands.
nuwax AGENTS.md
AGENTS.md instructions for nuwax-ai/nuwax, covering ai agent system documentation, 系统概述, ai agent 架构, 核心组件 and ai 功能特性.
AgentEval copilot-instructions.md
Copilot instructions for AgentEvalHQ/AgentEval, covering agenteval - ai coding agent instructions, architecture overview, environment setup, optional: secondary models for comparison and build & test commands.
framework AGENTS.md
AGENTS.md instructions for ai-driven-dev/framework, covering agents.md, behavior, communication, action and memory management.
AgentEval tracing.instructions.md
Guidelines for implementing trace recording and replay.
hands-on-modern-rl AGENTS.md
AGENTS.md instructions for walkinglabs/hands-on-modern-rl, covering repository guidelines, project structure, commands, editing rules and tikz → svg workflow.