design-oil-painting-process

design-oil-painting-process is a skill for Claude Code from jeffreytse/grimoire-core. It costs 50 tokens per session (1,487 once invoked), scanned A, original, MIT.

A staged plan for making an oil painting, from preparing the canvas through underpainting, block-in, later layers, and glazes.

In plain words
What is it for?
Planning layered oil paintings, choosing what each stage should accomplish, preparing the surface, and sequencing paint layers safely.
Why use it?
It provides an orderly way to build value, color, and transparency while using the fat-over-lean rule to reduce cracking and layer separation.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the grimoire-art plugin — 18 skills shipped together

Good fit Planning layered oil paintings, choosing what each stage should accomplish, preparing the surface, and sequencing paint layers safely.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jeffreytse/grimoire-core/design-oil-painting-process
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.

Any agent
npx skills add jeffreytse/grimoire-core --skill design-oil-painting-process
Clone the repo
git clone --depth 1 https://github.com/jeffreytse/grimoire-core

Made for: Claude Code.

Or install grimoire-art, the plugin that ships this one along with the rest of its 18 skills.

Wrote 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.

agentmods badge for design-oil-painting-process

README.md
[![agentmods](https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/design-oil-painting-process/github.svg)](https://agentmods.dev/skills/jeffreytse/grimoire-core/design-oil-painting-process)
Your own site
<a href="https://agentmods.dev/skills/jeffreytse/grimoire-core/design-oil-painting-process"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/design-oil-painting-process/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.

agentmods 80×15 button for design-oil-painting-process

Your own site · 80×15
<a href="https://agentmods.dev/skills/jeffreytse/grimoire-core/design-oil-painting-process"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/design-oil-painting-process.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,487 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.01487
Opus 5 $0.00025 $0.00744
Sonnet 5 $0.00010 $0.00297
Haiku 4.5 $0.00005 $0.00149

Measured 11d ago against content hash 892ff77539d1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

design-oil-painting-process 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.

skills/art/painting/skills/design-oil-painting-process/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Design Oil Painting Process

Plan an oil painting from ground preparation through layered execution using underpainting, opaque block-in, and transparent glazes — following the fat-over-lean rule to prevent cracking and delamination.

Why This Is Best Practice

Why best: Layered oil technique separates value, color, and luminosity into distinct passes and enforces fat-over-lean drying order — the sequence that prevents cracking while giving the painter control classical ateliers still teach today. Adopted by: Flemish masters (Van Eyck, Rembrandt, Vermeer) developed the layered oil painting process still taught at contemporary ateliers (Florence Academy of Art, Ingbretson Workshop, Grand Central Atelier). The fat-over-lean rule is physics: lean paint dries faster and forms the stable base; fat paint dries slower and must flex over it. Violating this rule causes delamination visible in poorly preserved museum works. Modern representational instruction (Juliette Aristides, Richard Schmid) integrates both classical layered technique and alla prima (wet-into-wet) depending on the desired result. Impact: The layered process separates concerns: value in the underpainting, color in the block-in, atmosphere and luminosity in the final glazes. Painters who attempt all three simultaneously (one-session alla prima without planning) often produce muddy mid-tones and lose the luminosity that glazes provide. Understanding both methods gives the painter control over when to use each.

Steps

1. Prepare the surface

Oil paint adheres best to an absorbent, textured, non-oily ground:

  • Primed canvas (lead white or titanium white gesso): standard; flexible; appropriate for alla prima and layered work
  • Oil-primed linen: more tooth; takes paint differently; traditional classical support
  • Toned ground: mix Raw Umber + Titanium White to produce a warm mid-grey; apply as thin transparent wash; allows values to be read from the start; Sargent, Whistler, and Sorolla used toned grounds almost exclusively

Read the full file on GitHub · 88 lines

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. 11d ago First seen · 88 lines · 50 tokens per session scan A 892ff77539d1

Subscribe to this mod's changes

design-oil-painting-process is a skill published in the GitHub repository jeffreytse/grimoire-core (4 stars, last pushed 23d ago), licensed MIT. It adds 50 tokens to every session and 1,487 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.