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 MarieLynneBlock/arcanum-artifex --skill minecraft-plugin-developmentgit clone --depth 1 https://github.com/MarieLynneBlock/arcanum-artifexWrote 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/marielynneblock/arcanum-artifex/minecraft-plugin-development)<a href="https://agentmods.dev/skills/marielynneblock/arcanum-artifex/minecraft-plugin-development"><img src="https://agentmods.dev/badge/skills/marielynneblock/arcanum-artifex/minecraft-plugin-development/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/marielynneblock/arcanum-artifex/minecraft-plugin-development"><img src="https://agentmods.dev/badge/skills/marielynneblock/arcanum-artifex/minecraft-plugin-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00113 | $0.02603 |
| Opus 5 | $0.00056 | $0.01301 |
| Sonnet 5 | $0.00023 | $0.00521 |
| Haiku 4.5 | $0.00011 | $0.00260 |
Grade A, and why
minecraft-plugin-development 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
8 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.
- references/bootstrap-registration.md 3.5 KB
- references/build-test-and-runtime-validation.md 6.6 KB
- references/config-data-and-async.md 3.6 KB
- references/maps-heroes-and-feature-modules.md 3.5 KB
- references/minigame-instance-flow.md 7.0 KB
- references/persistent-progression-and-events.md 5.8 KB
- references/project-patterns.md 5.1 KB
- references/state-sessions-and-phases.md 3.4 KB
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 · 275 lines · 113 tokens per session scan A 913dbb6616cc
minecraft-plugin-development is a skill published in the GitHub repository MarieLynneBlock/arcanum-artifex (4 stars, last pushed 7d ago), with no licence file. It adds 113 tokens to every session and 2,603 once invoked, about $0.0006 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 2026-09-03.
Other skills, from other repositories
unity-ui-art-and-motion-production
Use when new or revised Unity UI visuals, icons, panels, 9-slice sprites, component states, HUD or menu layouts, popup motion, screen transitions, or flattened UI screenshot decomposition must be produced through Figma and integrated into uGUI, NGUI, or UI Toolkit; not for UI debugging, localization-only work…
game-screenshot-showcase-and-store-packaging
Use when a Unity team needs approved PlayMode screenshots, immutable capture evidence, reviewed showcase slides, or report-only store screenshot packaging without auto-upload, signing, or submission.
studio-project-scaffold
Use when running gamestudio init, status, or uninit, or bootstrapping a new or adopted game repository with AGENTS.md, HANDOFF.md, .agents/CONTRACT.md, project governance, a subsystem registry, or a per-project adapter report, plan digest, named reviewer, backup root, generated agent overlay, apply, uninstall, and…
liveops-content-rollout-and-rollback
Use when a live game content update needs a governed rollout and rollback plan across cohort, canary, configuration, dependencies, monitoring, approvals, triggers, recovery, communication, and post-rollout verification; not for incident response after failure.
studio-project-intake
Use when collecting a game project goal, scope, risk tier, engine and version, subsystem ownership, constraints, and do-not-touch paths into an actionable intake task packet.
animation-rigging-import-audit
Use when character animation needs an audit across skeleton, rig, skin weights, avatar, retargeting, clips, events, root motion, compression, import settings, runtime blending, and platform budgets; not for general art preflight.