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 jeffreytse/grimoire-core --skill design-concept-art-briefgit clone --depth 1 https://github.com/jeffreytse/grimoire-coreWrote 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/jeffreytse/grimoire-core/design-concept-art-brief)<a href="https://agentmods.dev/skills/jeffreytse/grimoire-core/design-concept-art-brief"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/design-concept-art-brief/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/jeffreytse/grimoire-core/design-concept-art-brief"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/design-concept-art-brief.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 | $0.00053 | $0.01580 |
| Opus 5 | $0.00026 | $0.00790 |
| Sonnet 5 | $0.00011 | $0.00316 |
| Haiku 4.5 | $0.00005 | $0.00158 |
Grade A, and why
design-concept-art-brief 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 11d 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 — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Concept Art Brief
Design a concept art brief for game or film pre-production — specifying visual direction, tone, reference materials, deliverable formats, and technical requirements so artists can execute cohesively before production begins.
Why This Is Best Practice
Why best: A written brief front-loads visual decisions to the cheapest stage of production — sketch iteration — instead of leaving artists to guess and discovering misalignment after expensive assets are built. Adopted by: Every major game studio (Ubisoft, Naughty Dog, Epic Games, Riot Games) and animation/film production company (Pixar, ILM, Weta Digital) uses formal concept art briefs as the primary art direction tool in pre-production. The Concept Art Association's professional development resources document this workflow. Without a brief, individual artists interpret direction inconsistently, producing visually fragmented results that require expensive iteration. Impact: Pre-production concept art is the cheapest moment to make visual decisions — changes to a sketch cost minutes; changes to a modeled, textured, rigged asset cost days or weeks. A precise brief ensures the artist explores the right design space on the first pass. Studios report that clear briefs reduce iteration cycles by 40–60% compared to verbal direction alone. The brief also serves as contractual documentation for freelance artists: scope, deliverables, rights, and deadlines in writing prevent disputes.
Steps
1. Establish the production context
Before writing any creative direction, document the production facts:
- Project name and type: feature film, episodic animation, AAA game, mobile game, indie game, comic
- Art direction lead: who is approving the work; how many approval rounds are in scope
- Subject: character, creature, environment, vehicle, prop, UI element, or key art
- Intended use: character sheet for rigging, environment illustration for mood-setting, key art for marketing, style exploration
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.
- 11d ago First seen · 90 lines · 53 tokens per session scan A e06a51312ec4
design-concept-art-brief is a skill published in the GitHub repository jeffreytse/grimoire-core (4 stars, last pushed 22d ago), licensed MIT. It adds 53 tokens to every session and 1,580 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.
Other skills, from other repositories
creative-writing
Patterns for fiction, narrative structure, character development, dialogue, and storytelling craft.
pixel-art
Design pixel art sprites, tilesets, and animations — game assets, retro icons, and character sheets.
presenting-conference-talks
Generates conference presentation slides (Beamer LaTeX PDF and editable PPTX) from a compiled paper with speaker notes and talk script. Use when preparing oral talks, spotlight presentations, or invited talks for ML and systems conferences.
art-bible
Guided, section-by-section Art Bible authoring. Creates the visual identity specification that gates all asset production. Run after /brainstorm is approved and before /map-systems or any GDD authoring begins.
asset-spec
Generate per-asset visual specifications and AI generation prompts from GDDs, level docs, or character profiles. Produces structured spec files and updates the master asset manifest. Run after art bible and GDD/level design are approved, before production begins.
animation-system
Use when implementing animations — AnimationPlayer, AnimationTree, blend trees, state machines, sprite animation, and code-driven animation.