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Agent skill

Palette

by with-pebbly in with-pebbly/aseprite-ai-artist

Pick a palette that fits the request, build hue-shifted ramps, or clean up a sprite whose colours have sprawled.

MITAuto-check passedGame Development

Install Palette

skills CLI
$ npx skills add with-pebbly/aseprite-ai-artist --skill palette -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install with-pebbly/aseprite-ai-artist palette --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/with-pebbly/aseprite-ai-artist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/palette .claude/skills/palette && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
palette
GitHub stars
172
Token cost
~795 tokens
SKILL.md length
407 words
Files
1
Skills in repo
14
Repo updated
First seen
Licence
MIT

At a glance

Pick a palette that fits the request, build hue-shifted ramps, or clean up a sprite whose colours have sprawled.

  • Works in 4 steps: The user named a palette or a game. Use… → The user described an era. "8-bit" →… → The sprite is joining an existing… → …
  • The user asks about colour
  • SKILL.md covers Choosing, Building ramps, Repairing a sprawled palette and Contrast, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Palette is an agent skill from with-pebbly/aseprite-ai-artist. Pick a palette that fits the request, build hue-shifted ramps, or clean up a sprite whose colours have sprawled. Use when the user asks about colour, wants a specific retro look, or when validate reports off-palette colours.

Its SKILL.md is about 800 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Game Development, covering Sprites and pixel art. It works with Model Context Protocol. The repository describes itself as: Your coding agent paints pixel art in the Aseprite window you already have open. MCP server + skills for Claude Code, omp, Codex, Gemini CLI and Cursor — draws, looks at its…. The licence is MIT.

When your agent uses it

  • The user asks about colour
  • Wants a specific retro look
  • Validate reports off-palette colours

Example prompts

  • “/palette”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. The user named a palette or a game. Use it. palette op="preset" for a
  2. The user described an era. "8-bit" → PICO-8. "Game Boy" → gameboy.
  3. The sprite is joining an existing project. sprite_info an existing
  4. Nothing said. PICO-8. It is 16 colours, forgiving, and reads well.

What it can do on your machine

Read from SKILL.md and the folder at commit f51fe69. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Palette loads about 795 tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 407 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~58
When it runs · the whole SKILL.md, loaded when a task matches
~795

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from with-pebbly/aseprite-ai-artist at commit f51fe69, republished under its MIT licence (© with-pebbly). 407 words, ~795 tokens.

Download SKILL.mdSave it as .claude/skills/palette/SKILL.md (or your agent's skills folder).
name
palette
description
Pick a palette that fits the request, build hue-shifted ramps, or clean up a sprite whose colours have sprawled. Use when the user asks about colour, wants a specific retro look, or when validate reports off-palette colours.
title
Choose, build and repair a palette

Choose, build and repair a palette

Choosing

Match the request, in this order of preference:

  1. The user named a palette or a game. Use it. palette op="preset" for a bundled one, op="load" for a file they have, or reference op="sample_palette" to pull one out of a screenshot they gave you.
  2. The user described an era. "8-bit" → PICO-8. "Game Boy" → gameboy. "NES" → build 12–16 colours by hand as 3–4 hues × 4 values.
  3. The sprite is joining an existing project. sprite_info an existing asset and match it exactly. Consistency beats a nicer palette.
  4. Nothing said. PICO-8. It is 16 colours, forgiving, and reads well.

palette op="preset" with no valid preset lists what is bundled and says that anything else can be loaded from a file.

Building ramps

A ramp is one material's run of colours. Build them hue-shifted:

palette op="ramp" base="#c04030" steps=5 spread=0.55

Shadows come out cooler, highlights warmer — the thing that separates pixel art from a brightness slider. Three to five steps per material is plenty; more is decisions you will not use.

Reuse steps across materials. Sharing the darkest colour between skin and leather ties the sprite together and costs nothing.

Show full SKILL.md (222 more words)Show less

Repairing a sprawled palette

Symptom: validate reports off-palette colours, or the sprite has ninety near-identical browns.

  1. Diagnose:

    palette op="analyze"

    This reports off-palette colours in the art, near-duplicate palette entries (ΔE < 3 — the same colour to a viewer), unused slots and the lowest-contrast pair.

  2. Decide the target palette. Either the existing one, minus the near-duplicates, or a fresh one.

  3. Snap the art onto it:

    recolor op="snap" layer="…"

    Perceptual (CIELAB) nearest, applied per distinct colour in one pass. The result reports exactly which colour became which and how many pixels moved, so you can see whether a merge was wrong before the user does.

  4. Re-check. palette op="analyze" again, then look op="preview". Merging two colours that were doing different jobs is the risk here; look for a form that has gone flat.

Or start over from the art: palette op="extract" replaces the palette with one quantized from the sprite's own colours (RGB sprites only, maxColors default 16) — useful when the sprite came from a reference image imported at full colour and never had a curated palette to snap onto.

Contrast

Value contrast carries readability, not hue contrast. Check by running recolor op="desaturate" on a copy — if the shapes stop reading in greyscale, the palette's values are too close, and no amount of hue will fix it.

rules://01-palette-and-color, rules://02-shading-and-light, rules://20-color-for-pixel-art, rules://21-limited-and-platform-palettes.

© with-pebbly, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/palette of with-pebbly/aseprite-ai-artist.

Open the folder on GitHubat commit f51fe69

Compare with similar skills

Palette next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Palette compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Palette this skillwith-pebbly/aseprite-ai-artist172—~795Automated safety check: PassMIT
Sprite Genaldegad/sprite-gen2.6k—~4.5kAutomated safety check: PassApache-2.0
Fal Assetsrehan-remade/universal-modder5.3k—~2kAutomated safety check: NotesMIT
Game Assetsglifxyz/glif-mcp-server212—~831Automated safety check: PassMIT
Scenario Game Assetsscenario-labs/skills913—~4.5kAutomated safety check: PassMIT
Game Art PipelinePersonalJarvis/PersonalJarvis141—~566Automated safety check: PassApache-2.0

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  • Fix

    with-pebbly/aseprite-ai-artist

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  • New

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    Create a new Aseprite document with the right canvas size, colour mode, palette and layer structure, so later work does not have to fight the setup.

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  • Review

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Works with

Categories

Questions about Palette

What does Palette do?

Pick a palette that fits the request, build hue-shifted ramps, or clean up a sprite whose colours have sprawled. Palette is an agent skill from with-pebbly/aseprite-ai-artist. Pick a palette that fits the request, build hue-shifted ramps, or clean up a sprite whose colours have sprawled.

When should I use Palette?

Palette fits situations like: the user asks about colour; wants a specific retro look; validate reports off-palette colours.

How do I install Palette in Claude Code?

Run `npx skills add with-pebbly/aseprite-ai-artist --skill palette -a claude-code`. Or copy the skill folder (skills/palette in with-pebbly/aseprite-ai-artist) into .claude/skills/palette in your project. Claude Code loads it when a task matches its description.

How do I install Palette in Codex?

Run `npx skills add with-pebbly/aseprite-ai-artist --skill palette -a codex`. Or copy the skill folder (skills/palette in with-pebbly/aseprite-ai-artist) into .agents/skills/palette in your project. Codex loads it when a task matches its description.

Can I use Palette in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add with-pebbly/aseprite-ai-artist --skill palette -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/palette, .gemini/skills/palette, .github/skills/palette and .opencode/skills/palette in your project.

What does Palette need to run?

SKILL.md names no scripts, command-line tools or credentials: Palette is instructions for the agent only.

Does Palette access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Palette safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Palette use?

Palette is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Palette use?

About 795 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Palette?

Skills that share tags, products or a category with Palette: Sprite Gen (aldegad/sprite-gen, 2.6k stars), Fal Assets (rehan-remade/universal-modder, 5.3k stars), Game Assets (glifxyz/glif-mcp-server, 212 stars) and Scenario Game Assets (scenario-labs/skills, 913 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Palette?

with-pebbly (a GitHub organization) maintains it in with-pebbly/aseprite-ai-artist, which has 172 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 8, 2026.

Source: with-pebbly/aseprite-ai-artist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.