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/yurakawa/mskills/agents-mdgit clone --depth 1 https://github.com/yurakawa/mskillsWrote 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/yurakawa/mskills/agents-md)<a href="https://agentmods.dev/instructions/yurakawa/mskills/agents-md"><img src="https://agentmods.dev/badge/instructions/yurakawa/mskills/agents-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 | $0.00718 | $0.00718 |
| Opus 5 | $0.00359 | $0.00359 |
| Sonnet 5 | $0.00144 | $0.00144 |
| Haiku 4.5 | $0.00072 | $0.00072 |
Grade A, and why
mskills AGENTS.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 5d 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 — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file contains guidelines and best practices for AI agents (like Claude, Copilot, Cursor, Antigravity, etc.) when working in this repository (mskills).
1. Project Overview
mskills is a CLI tool designed to centrally manage and apply "Agent Skills" for various AI agents.
It syncs and outputs skills from local sources or GitHub to each agent's dedicated directory (e.g., ~/.claude/skills or ~/.gemini/antigravity/skills).
2. Core Instructions for Agents
When interacting with the user or modifying source code, you must strictly follow these rules:
- Handling Simple Tasks: For simple questions or tasks that do not involve significant code changes or the implementation of new features, do not generate planning documents like
task.md,implementation_plan.md, orwalkthrough.md(unless explicitly permitted). - Documentation Storage: If you need to generate documentation (like an implementation plan), always create a folder named
docs/[topic_name_in_snake_case]/and save it there.
3. Technology Stack
- Language & Module System: TypeScript (ESM, targeting Node.js 18+,
type: "module") - CLI Framework: Commander.js
- Schema Validation: Zod
- Package Manager: npm
- Testing Framework: Vitest
- Release Management: Changesets
4. Project Structure and Architecture
src/commands/: Implementation layer for CLI commands (e.g.,add.ts,apply.ts,prompt.ts,export.ts)src/config/: Configuration file (~/.config/mskills/config.json) reading, writing, and path resolution logicsrc/skills/: Parsing and downloading logic for skill sources (GitHub repositories, local paths)src/agents/: Coordination logic for applying skills to AI agents (using copies or symlinks)src/utils/: Common utility functions.agent/workflows/and.agent/skills/: Custom skills and workflow definitions for agents to execute autonomously
5. Development and Implementation Best Practices
- Functional Approach: To make the code predictable and testable, separate pure functions from side effects (like file system changes) as much as possible. (Example: use functions instead of constants for path resolution in
src/config). - Error Handling: Use
try-catchappropriately. In case of anomalies, output clear and user-friendly messages (using tools likechalk). - Terminal UI: Display a spinner using
orafor time-consuming operations (like downloading from Git). - Test-Driven Development: When adding or modifying logic, update or create corresponding tests in the same directory (
*.test.ts) and runnpm run testto ensure coverage and expected behavior. Use appropriate mocking or temporary directories for tests involving file I/O. - Cross-Platform Compatibility: Use standard Node.js functions like
path.joinfor path resolution to properly handle OS-dependent path separators.
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.
- 5d ago First seen · 41 lines · 718 tokens per session scan A 5aa49b863a36
mskills AGENTS.md is an instructions file published in the GitHub repository yurakawa/mskills (3 stars, last pushed 4mo ago), licensed MIT. It adds 718 tokens to every session, about $0.0036 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
mcp-steroid CLAUDE.md
Claude Code instructions for jonnyzzz/mcp-steroid, covering claude.md, agents.md, design philosophy, recursive context lookup (do this before sub-folder work), sub-folder guides and must do.
nopua AGENTS.md
Instructions for wuji-labs/nopua, covering nopua · codex 入仓规则, 一 · 项目定位, 二 · 起手必读, 三 · 工程与研究纪律 and 四 · 对外署名.
video-podcast-maker AGENTS.md
AGENTS.md instructions for Agents365-ai/video-podcast-maker, covering repository guidelines, project structure & module organization, build, test, and development commands, coding style & naming conventions and testing guidelines.
skills CLAUDE.md
Claude Code instructions for mixedbread-ai/skills, covering mixedbread skills, repository structure, conventions, adding a new skill and testing a skill.
growmos AGENTS.md
Instructions for codician-team/growmos: This repository keeps a knowledge graph in .growmos/ (entities, typed relations, provenance, profiles, a journal). It is the shared world model that survives context windows. Treat it as memory you read at the start of work and write to as you develop. Zero-config commands.
PTY-Agent AGENTS.md
AGENTS.md instructions for ming-14/PTY-Agent, covering base, 环境, 总规范, 项目清洁度:不应出现在项目(代码,注释,文档等任何文件)中的内容 and 历史痕迹(开发历程 / 时间 / 变更记录).