inventory-economy SKILL.md skillA

inventory-economy from jammyfu/open-game-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add jammyfu/open-game-skills/inventory-economy@git:20260913.3c614b8

Pins git:20260913.3c614b8 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
jammyfu/open-game-skills
Path
skills/disciplines/inventory-economy/SKILL.md
Versions recorded
2
Latest version
git:20260913.3c614b8, committed Sep 13, 2026
First version recorded
Sep 12, 2026
Size
2,094 bytes
Repository stars
12
License
MIT

Use when carried items, stacks, unique slots, weight, pages, hotbars, pickup overflow, or discard behavior creates lost items, duplicate ownership, unclear capacity, or unusable inventory pressure.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Inventory Economy

This skill owns **inventory identity, capacity, stacking, containment, overflow and transfer rules**. `equipment-progression` owns item growth; `durability-economy` owns wear; `currency-dual` owns wallets.

## Modes

| Mode | Capacity model |
|---|---|
| stack-tabs | categories plus stack limits |
| unique-slots | one instance per occupied slot |
| weight | capacity derived from authored weight rules |
| page-grid | page/cell capacity and placement |

Capacity pressure is project data. A game may use meaningful scarcity, generous storage, auto-stash, unlimited quest inventory, or no discard at all. Do not force every full bag to become a dramatic choice.

## Identity and transactions

Every item instance or stack has a stable ID/type identity and explicit quantity. Pickup, split, merge, move, equip, drop, discard and stash are transactions: either the source/destination state commits consistently or the operation fails without duplicating/losing items.

Publish stack-key rules, capacity calculation, reserved/quest-item policy and transfer ownership. Repeated pickup callbacks use a stable pickup/transaction ID when duplication is possible.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add jammyfu/open-game-skills/inventory-economy@sha256:df80d1601d7fce1d

The line at the top of this page pins the label git:20260913.3c614b8, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_xkp7ikoqs3ml5r6p.svg)](https://markdownregistry.com/a/art_xkp7ikoqs3ml5r6p)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Sep 12, 2026 and Sep 13, 2026, more than one a day.

versioncommittedcommitsizeaudit
git:20260913.3c614b8 latest2026-09-13 3c614b8 2,094 BA view · diff
git:20260912.9399f332026-09-12 9399f33 520 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2094 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

jammyfu/open-game-skills · 12 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xkp7ikoqs3ml5r6p
GET https://markdownregistry.com/api/v1/resolve?ref=jammyfu/open-game-skills/inventory-economy
GET https://markdownregistry.com/api/v1/blob/df80d1601d7fce1da51c78c10db6c886298a232d0e27edb24786b9cbb9d9634c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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