memory_tool: Skill for Claude Code

.claude/skills/mt-master-module/SKILL.md

mt-master-module is a skill for Claude Code from hanyki111/memory_tool. It costs 42 tokens per session (1,303 once invoked), scanned B, original, MIT.

A skill for creating one overview document that represents an entire project in a federated knowledge base, meaning a system where multiple projects share organized information. It gathers project context, key modules, decisions, and milestones before creating the overview structure.

In plain words
What is it for?
Use it when creating a project master module, preparing knowledge-base federation, or summarizing a mature project's context, decisions, and progress.
Why use it?
It gives people and other projects a single entry point for understanding a project. This reduces the need to inspect many separate memory files before learning the project's purpose and history.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions CLAUDE.md.

This is hanyki111/memory_tool's own configuration. It tells Claude Code how to work on memory_tool 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 memory_tool configures →

Reuse

Borrowing it

Nothing to install: this file belongs to hanyki111/memory_tool. 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/hanyki111/memory_tool/main/.claude/skills/mt-master-module/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/hanyki111/memory_tool

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.

agentmods badge for mt-master-module

README.md
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Your own site
<a href="https://agentmods.dev/skills/hanyki111/memory_tool/mt-master-module"><img src="https://agentmods.dev/badge/skills/hanyki111/memory_tool/mt-master-module/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.

agentmods 80×15 button for mt-master-module

Your own site · 80×15
<a href="https://agentmods.dev/skills/hanyki111/memory_tool/mt-master-module"><img src="https://agentmods.dev/badge/skills/hanyki111/memory_tool/mt-master-module.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,303 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00042 $0.01303
Opus 5.5 $0.00017 $0.00521
Sonnet 5.5 $0.00008 $0.00261
Haiku 4.5 $0.00004 $0.00130

Measured today against content hash 1115b401b325, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

mt-master-module scanned grade B with 1 finding 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 today.

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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

cat .claude/memory-context.md
.claude/skills/mt-master-module/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MT-Master-Module: Project Overview Creator

"One document to represent your entire project."

This skill creates a comprehensive project overview document that serves as the entry point for understanding a project in the federated knowledge system.

When to Use

  • User explicitly requests: "마스터 모듈 만들어줘", "create master module", "프로젝트 개요 만들어줘"
  • Project is mature enough to summarize
  • Preparing for KB federation (multiple projects sharing knowledge)

For publishing specific modules, use mt-publish instead.

Workflow

Phase 1: Gather Information

Read project context:

cat .claude/memory-context.md
cat CLAUDE.md
mmodule tree

Review key modules:

mmodule tree
# Read the documents the tree lists. Decisions are also in the timeline: ms "Decision:"

Check timeline for milestones:

mweek
mtoday

Phase 2: Create Master Module

Create module structure:

mmodule create master

This creates .memory/modules/master.md locally.

When published, the registry key automatically includes project name prefix (e.g., memory-tool/master) to avoid collisions across projects.

The document holds the project overview and a summary of architectural decisions.

Phase 3: Write Content

Master module outline:

# [Project Name] - Master Module

> One-sentence project description

## Project Identity

- **Name:** [Project Name]
- **Purpose:** [Core problem being solved]
- **Started:** [Date]
- **Status:** [Active/Maintenance/Archived]

## Tech Stack

| Layer | Technology | Rationale |
|-------|------------|-----------|
| Language | Python 3.10+ | Type hints, async support |
| Database | SQLite | Zero-config, portable |
| CLI | Click | Decorator-based, composable |

## Architecture Overview

[High-level architecture diagram or description]

### Key Components

1. **Component A** - [Purpose]
2. **Component B** - [Purpose]
3. **Component C** - [Purpose]

## Module Index

| Module | Purpose | Status |
|--------|---------|--------|
| core-system | Timeline and initialization | Active |
| search-system | Text and semantic search | Active |
| ui-system | CLI and TUI interfaces | Active |

## Key Decisions

| Decision | Rationale | Date |
|----------|-----------|------|
| SQLite for storage | Zero-config, portable | 2025-01 |
| BM25 for search | Fast, no dependencies | 2025-02 |

## Lessons Learned

### What Worked Well
- [Pattern or approach that succeeded]
- [Another success]

### What We'd Do Differently
- [Retrospective insight]
- [Another insight]

## Getting Started

```bash

Read the full file on GitHub · 239 lines

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. today Changed · -6 lines 1115b401b325
  2. 2mo ago First seen · 245 lines · 42 tokens per session scan B 7fe96999e903

Subscribe to this mod's changes

mt-master-module is a skill published in the GitHub repository hanyki111/memory_tool (11 stars, last pushed yesterday), licensed MIT. It adds 42 tokens to every session and 1,303 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

mt-master-module compared with skills from other repositories

mt-master-module next to 6 skills from other repositories
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xlsxMemTensor/memmy-agentSkill2.2ktodayMITA35Claude Code, Codex