quartermaster

A workspace improvement assistant for Claude Code. It studies local session history to find repeated manual work, missing measurements, recurring corrections, and setup problems.

In plain words
What is it for?
Finding and improving skills, rules, code maps, measurements, and workspace setup; tracking whether applied changes helped; and checking Toolshed plugin health and updates.
Why use it?
It helps identify improvements based on actual work patterns instead of guesswork, then asks for approval before applying each proposed change.

Plugin for Claude Code

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.

agentmods
npx agentmods add plugins/eigenwise/eigenwise-toolshed/quartermaster
Claude Code
/plugin marketplace add Eigenwise/eigenwise-toolshed
Clone the repo
git clone --depth 1 https://github.com/Eigenwise/eigenwise-toolshed

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

quartermaster 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 yesterday.

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.

plugins/quartermaster/.claude-plugin/plugin.json · 11 lines

What it actually says

{
  "name": "quartermaster",
  "version": "0.7.1",
  "description": "Works out what your workspace is short of and gets it. Reads what your recent Claude Code sessions were actually working toward, then asks what is missing against that: a measurement nobody can run yet, work you keep doing by hand, knowledge you keep re-deriving, and the setup pushing back at you. It improves existing skills that misfire, under-trigger, or need manual correction before proposing parallel new ones. A SessionStart line keeps Claude watching for the task done three times that should become a skill, map entry, rule, or measurement, offering to capture it in the moment. A SessionEnd hook tallies each session locally (no LLM, no network); once enough piles up, a SessionStart nudge and one Stop-time block make Claude offer a focused optimization round at a real pause. The resupply skill mines that history and proposes one change at a time, each needing your approval; the next pass reports whether what you applied actually helped. Its setup skill outfits a new project from what your history shows you keep needing. It also keeps Eigenwise Toolshed plugins current, checks workspace health, and warns when an open session has loaded stale plugin code.",
  "author": { "name": "Eigenwise", "email": "[email protected]" },
  "homepage": "https://github.com/Eigenwise/eigenwise-toolshed/tree/main/plugins/quartermaster",
  "repository": "https://github.com/Eigenwise/eigenwise-toolshed",
  "license": "MIT",
  "keywords": ["resupply", "self-improvement", "capability", "measurement", "transcripts", "friction", "recommendations", "plugins", "rules", "permissions", "setup", "developer-experience"]
}
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. yesterday First seen · 11 lines scan A eabfb1ac8e83

Subscribe to this mod's changes

quartermaster is a plugin published in the GitHub repository Eigenwise/eigenwise-toolshed (36 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.