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 0xheycat/isometric-game-skills --skill isometric-character-spritesgit clone --depth 1 https://github.com/0xheycat/isometric-game-skillsWrote 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/0xheycat/isometric-game-skills/isometric-character-sprites)<a href="https://agentmods.dev/skills/0xheycat/isometric-game-skills/isometric-character-sprites"><img src="https://agentmods.dev/badge/skills/0xheycat/isometric-game-skills/isometric-character-sprites/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/0xheycat/isometric-game-skills/isometric-character-sprites"><img src="https://agentmods.dev/badge/skills/0xheycat/isometric-game-skills/isometric-character-sprites.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 | $0.00028 | $0.00421 |
| Opus 5 | $0.00014 | $0.00211 |
| Sonnet 5 | $0.00006 | $0.00084 |
| Haiku 4.5 | $0.00003 | $0.00042 |
Grade A, and why
isometric-character-sprites 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 12d 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.
What it actually says
Isometric Character Sprites
Overview
Characters move, so they need consistent proportions across 8 facing directions and a fixed feet-anchor (where the character touches the ground). Without this, characters appear to slide, jitter, or sort incorrectly when walking.
When to Use
- You need a player or NPC that faces multiple directions.
- Characters change size or proportion between directions.
- Movement looks like the sprite is sliding or floating.
Process
- Lock art direction and character height in pixels.
- Generate the same character in 8 directions (S, SW, W, NW, N, NE, E, SE) on a plain background.
- Keep proportions identical - same height line and feet baseline across all 8.
- Fix seed/settings; regenerate any direction that drifts in size or style.
- Clean alpha with
transparent-cutout-cleanup. - Define the feet-anchor (bottom-center) identically for every direction.
- Test by cycling directions in place - the feet must not jump between frames.
Rationalizations (Stop Lying to Yourself)
| Excuse | Reality |
|---|---|
| "4 directions is enough" | Diagonal movement looks broken with 4 directions in iso. Do 8. |
| "Slight height differences are fine" | A 3px height drift reads as bobbing. Align the baseline. |
Red Flags - STOP if you catch yourself:
- Inconsistent character height across directions.
- Feet-anchor differs per direction so the sprite slides.
- Only front-facing direction exists.
Verification
You are NOT done until every box is checked:
- 8 consistent directions exist for the character.
- Feet-anchor is identical across all directions.
- Cycling directions in place shows no jump or slide.
What ships with it
1 file 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.
- 12d ago First seen · 51 lines · 28 tokens per session scan A 15bc5d458ec6
isometric-character-sprites is a skill published in the GitHub repository 0xheycat/isometric-game-skills (15 stars, last pushed 1mo ago), licensed MIT. It adds 28 tokens to every session and 421 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 2026-08-31.
Other skills, from other repositories
threejs-geometry
Three.js geometry creation - built-in shapes, BufferGeometry, custom geometry, instancing. Use when creating 3D shapes, working with vertices, building custom meshes, or optimizing with instanced rendering.
threejs-fundamentals
Three.js scene setup, cameras, renderer, Object3D hierarchy, coordinate systems. Use when setting up 3D scenes, creating cameras, configuring renderers, managing object hierarchies, or working with transforms.
threejs-world-generation
Build deterministic, editable, free-viewpoint Three.js worlds from text or structured briefs. Use for cinematic 3D terrain, semantic regions, procedural biomes, explicit landmarks, environmental scattering, camera fly-throughs, world diagnostics, or requests for a real 3D environment rather than generated 2D footage.…
sound-effects
Generate sound effects from text descriptions using ElevenLabs. Use when creating sound effects, generating audio textures, producing ambient sounds, cinematic impacts, UI sounds, or any audio that isn't speech. Supports looping, duration control, and prompt influence tuning.
character-animation-qa
Review local character animation with schema checks, Playwright browser previews, frame sampling, and FFmpeg/ffprobe final output checks.
pose-library-design
Design reusable 2D character pose libraries, action cycles, and expression states for data-driven animation.