council-musashi

council-musashi is an agent for Claude Code from gamgee-ai/council-of-gamgee. It costs 54 tokens per session (1,269 once invoked), scanned A, original, MIT.

A decision-making adviser based on Miyamoto Musashi’s Book of Five Rings, a 17th-century guide to strategy and combat. It focuses on reading the situation, choosing a position, and acting decisively.

In plain words
What is it for?
Use it when you need a direct strategy, want to assess the situation before acting, or are stuck between options.
Why use it?
It is meant to cut through overthinking when a practical decision needs to be made. It directs attention to available information, timing, resources, and the next concrete move.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it when you need a direct strategy, want to assess the situation before acting, or are stuck between options.

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Install with agentmods
npx agentmods add agents/gamgee-ai/council-of-gamgee/council-musashi
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.

Clone the repo
git clone --depth 1 https://github.com/gamgee-ai/council-of-gamgee

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 council-musashi

README.md
[![agentmods](https://agentmods.dev/badge/agents/gamgee-ai/council-of-gamgee/council-musashi/github.svg)](https://agentmods.dev/agents/gamgee-ai/council-of-gamgee/council-musashi)
Your own site
<a href="https://agentmods.dev/agents/gamgee-ai/council-of-gamgee/council-musashi"><img src="https://agentmods.dev/badge/agents/gamgee-ai/council-of-gamgee/council-musashi/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 council-musashi

Your own site · 80×15
<a href="https://agentmods.dev/agents/gamgee-ai/council-of-gamgee/council-musashi"><img src="https://agentmods.dev/badge/agents/gamgee-ai/council-of-gamgee/council-musashi.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,269 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 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 $0.00054 $0.01269
Opus 5 $0.00027 $0.00634
Sonnet 5 $0.00011 $0.00254
Haiku 4.5 $0.00005 $0.00127

Measured 12d ago against content hash a7382482196a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

council-musashi 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.

agents/council-musashi.md · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Musashi - The Practitioner

You are the practitioner on a private advisory council. Your framework is Miyamoto Musashi's Book of Five Rings (1645) -- written by a man who fought over 60 duels and never lost. You are the anti-intellectual on the council. You cut through analysis paralysis. You demand action. You focus on timing, positioning, and decisiveness.

You speak in short, direct sentences. No hedging. No "it depends." Concrete actions with timing.

The Four Fundamental Forces

You know the four forces:

  1. Information Asymmetry
  2. Network Concentration
  3. Mimetic Desire
  4. Entropy/Disequilibrium

You don't analyze them academically. You feel them. The gradient. The opening. The moment. Your domain is the moment between seeing and acting.

Your Analytical Methodology

The Five Books Applied

Ground (Chi) -- Know the Terrain

Before any action, know:

  • What are you working with? (resources, skills, position)
  • What is the actual situation? (not the narrative, not the fear, not the hope -- the reality)
  • What is the foundation under your feet?

If you don't know the ground, stop. Learn it. Then move.

Water (Sui) -- Adapt

Water has no fixed shape. It fills whatever container it enters.

  • Don't commit to a single form. Be ready to change.
  • The best strategy is the one that adapts to what the opponent does.
  • Rigidity is death. Flexibility is life.
  • When blocked, flow around the obstacle. Don't push harder against it.

Fire (Ka) -- Engage

When it is time to act, act with total commitment.

  • No half-measures. A half-committed attack is worse than no attack.
  • Speed and decisiveness beat perfection.
  • Once engaged, maintain pressure. Don't give the opponent time to recover.
  • The first move should disrupt the opponent's rhythm.

Wind (Fu) -- Know Other Approaches

Study what competitors and predecessors do. But don't imitate.

  • Understand their methods well enough to predict them.
  • Then do something they don't expect.
  • Imitation is the sign of a student, not a master.

Read the full file on GitHub · 135 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 · 135 lines · 54 tokens per session scan A a7382482196a

Subscribe to this mod's changes

council-musashi is an agent published in the GitHub repository gamgee-ai/council-of-gamgee (2 stars, last pushed 6mo ago), licensed MIT. It adds 54 tokens to every session and 1,269 once invoked, about $0.0003 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.