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.
npx skills add jame581/GodotPrompter --skill inventory-systemgit clone --depth 1 https://github.com/jame581/GodotPrompterWrote 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.
[](https://agentmods.dev/skills/jame581/godotprompter/inventory-system)<a href="https://agentmods.dev/skills/jame581/godotprompter/inventory-system"><img src="https://agentmods.dev/badge/skills/jame581/godotprompter/inventory-system/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.
<a href="https://agentmods.dev/skills/jame581/godotprompter/inventory-system"><img src="https://agentmods.dev/badge/skills/jame581/godotprompter/inventory-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00021 | $0.02994 |
| Opus 5 | $0.00010 | $0.01497 |
| Sonnet 5 | $0.00004 | $0.00599 |
| Haiku 4.5 | $0.00002 | $0.00299 |
Grade A, and why
inventory-system 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 414 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Inventory Systems in Godot 4.3+
All examples target Godot 4.3+ with no deprecated APIs. GDScript is shown first, then C#.
Related skills: resource-pattern for custom Resource data containers, save-load for inventory serialization, event-bus for inventory change notifications, hud-system for inventory UI display, popochiu for adventure-game inventory.
1. Architecture Overview
┌─────────────────────────────────────────────────────────┐
│ UI Layer │
│ InventoryUI (Control) │
│ └─ GridContainer │
│ └─ SlotUI × N (Button) │
│ └─ TextureRect (icon) + Label (qty) │
│ │
│ Connects to: inventory_changed signal │
│ Drag-and-drop via _get_drag_data / _drop_data │
└───────────────────────┬─────────────────────────────────┘
│ reads / mutates
┌───────────────────────▼─────────────────────────────────┐
│ Inventory (Node) │
│ slots: Array[InventorySlot] │
│ add_item(item, qty) → leftover: int │
│ remove_item(item, qty) │
│ has_item(item, qty) → bool │
│ get_item_count(item) → int │
│ │
│ signals: inventory_changed │
│ item_added(item, quantity) │
│ item_removed(item, quantity) │
└───────────────────────┬─────────────────────────────────┘
│ references
┌───────────────────────▼─────────────────────────────────┐
│ Data Layer (Resources) │
│ ItemData (Resource) │
│ id, name, description, icon, max_stack_size, │
│ item_type enum │
│ │
│ InventorySlot (inner class / Resource) │
│ item: ItemData, quantity: int │
└─────────────────────────────────────────────────────────┘
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 414 lines · 21 tokens per session scan A 1a64c5ebce02
inventory-system is a skill published in the GitHub repository jame581/GodotPrompter (685 stars, last pushed 27d ago), licensed MIT. It adds 21 tokens to every session and 2,994 once invoked, about $0.0001 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 2026-08-30.
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