briefing-vault

briefing-vault is a skill for Claude Code from sehoon787/my-claude. It costs 28 tokens per session (1,139 once invoked), scanned A, a copy of briefing-vault, MIT.

A project knowledge base stored in a `.briefing/` folder, using Markdown files that work with Obsidian, a note-taking app.

In plain words
What is it for?
Use it to create the knowledge-base structure, record work sessions, track decisions and open questions, and search project notes.
Why use it?
It keeps project decisions, session notes, lessons, and references in one searchable place so important context is not lost between sessions.

Skill for Claude Code

Written for Claude Code: effort in frontmatter.

Part of the my-claude plugin — 4 skills, 8 hooks, 3 MCP servers shipped together

Good fit Use it to create the knowledge-base structure, record work sessions, track decisions and open questions, and search project notes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sehoon787/my-claude/briefing-vault
Install

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.

Any agent
npx skills add sehoon787/my-claude --skill briefing-vault
Clone the repo
git clone --depth 1 https://github.com/sehoon787/my-claude

Made for: Claude Code.

Or install my-claude, the plugin that ships this one along with the rest of its 4 skills, 8 hooks, 3 MCP servers.

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 briefing-vault

README.md
[![agentmods](https://agentmods.dev/badge/skills/sehoon787/my-claude/briefing-vault/github.svg)](https://agentmods.dev/skills/sehoon787/my-claude/briefing-vault)
Your own site
<a href="https://agentmods.dev/skills/sehoon787/my-claude/briefing-vault"><img src="https://agentmods.dev/badge/skills/sehoon787/my-claude/briefing-vault/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 briefing-vault

Your own site · 80×15
<a href="https://agentmods.dev/skills/sehoon787/my-claude/briefing-vault"><img src="https://agentmods.dev/badge/skills/sehoon787/my-claude/briefing-vault.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,139 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 92% copy Near-identical to another mod 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 $0.00028 $0.01139
Opus 5 $0.00014 $0.00570
Sonnet 5 $0.00006 $0.00228
Haiku 4.5 $0.00003 $0.00114

Measured 12d ago against content hash 0918035762b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

briefing-vault 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 12d 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.

Origin

This is a copy

92% identical to briefing-vault — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/core/briefing-vault/SKILL.md · 245 lines

How it starts

The opening of the file, as written. The whole thing — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Briefing Vault Skill

Manage the .briefing/ directory as a persistent, Obsidian-compatible knowledge base.

Initialize Vault

When starting a new vault (first time in a project):

  1. Create directory structure:
.briefing/
├── INDEX.md
├── sessions/
├── decisions/
├── learnings/
├── references/
└── agents/
  1. Create .briefing/INDEX.md:
---
date: <today>
type: index
tags: [project, index]
---

# <Project Name> Knowledge Base

## Overview
<Brief project description>

## Recent Decisions
<!-- Auto-updated by agents -->

## Open Questions
<!-- Track unresolved items -->

## Key Links
- [[sessions/]] — Session logs
- [[decisions/]] — Architecture decisions
- [[learnings/]] — Patterns and solutions
  1. Add .briefing/ to .gitignore

Note Templates

Session Note (sessions/YYYY-MM-DD-topic.md)

---
date: YYYY-MM-DD
type: session
tags: [session]
related: []
---

# Session: <Topic>

## Goal
<What was requested>

## Actions
- <What was done>

## Results
- <Outcomes>

## Decisions Made
- [[decisions/decision-name]] — <brief>

## Learnings
- [[learnings/learning-name]] — <brief>

## Next Steps
- <Follow-up items>

Decision Note (decisions/name.md)

---
date: YYYY-MM-DD
type: decision
tags: [architecture|design|tooling]
status: accepted|superseded|deprecated
related: []
---

# Decision: <Title>

## Context
<Why this decision was needed>

## Options Considered
1. <Option A> — pros/cons
2. <Option B> — pros/cons

## Decision
<What was chosen and why>

## Consequences
<Impact of this decision>

Learning Note (learnings/name.md)

---
date: YYYY-MM-DD
type: learning
tags: [pattern|gotcha|solution]
related: []
---

# <Title>

## Problem
<What went wrong or was non-obvious>

## Solution
<What fixed it>

## Why It Works
<Root cause explanation>

Reference Note (references/name.md)

---
date: YYYY-MM-DD
type: reference
source: <URL or source description>
tags: [reference, topic]
related: []
---

# <Title>

## Source
<URL or citation>

## Key Points
- <Main finding 1>
- <Main finding 2>

## Context
<Why this reference is relevant>

## Raw Notes
<Verbatim excerpts or detailed notes>

Read the full file on GitHub · 245 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. 12d ago First seen · 245 lines · 28 tokens per session scan A 0918035762b1

Subscribe to this mod's changes

briefing-vault is a skill published in the GitHub repository sehoon787/my-claude (16 stars, last pushed 2d ago), licensed MIT. It adds 28 tokens to every session and 1,139 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to briefing-vault, differing in 1 line, and is treated as a copy.