# animation-quality-gate

Validates Blender animations with contact sheets and silhouette checks before accepting passes. Catches texture flickering and broken GLB exports.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 822 installs · ★ 125
- Author: RobLe3
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/RobLe3/cc-blender-skill/tree/HEAD/plugin/skills/animation-quality-gate/SKILL.md
- Updated: 2026-10-12
- HTML: https://affpapa.org/en/nevibecode/skills/animation-quality-gate

## What it does

This skill stops agents from accepting an animation just because the render command finished. It audits the output across seven dimensions: subject dominance, layer separation, silhouette stability, texture coherence, easing curves, export parity, and frame aesthetics. An animation pass fails without a contact sheet.

Scene analysis relies on Blender MCP server tools to inspect hierarchy and capture viewport frames. For detailed comparisons, the workflow runs `scripts/animation_contact_sheet.py` to compile rendered frames into a grid with difference metrics.

Strict gates prevent broken deliverables. If texture swaps rely purely on Blender Python handlers, the skill rejects any claim of GLB compatibility, because that script logic will not survive export.

## Requirements
- Works with: Blender

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add RobLe3/cc-blender-skill --skill animation-quality-gate -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/animation-quality-gate/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/animation-quality-gate/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add RobLe3/cc-blender-skill --skill animation-quality-gate -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/animation-quality-gate/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add RobLe3/cc-blender-skill --skill animation-quality-gate -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/animation-quality-gate/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install RobLe3/cc-blender-skill animation-quality-gate
```

2. **Manually: put the files in place**
- File: `.github/skills/animation-quality-gate/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add RobLe3/cc-blender-skill --skill animation-quality-gate -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/RobLe3/cc-blender-skill --path plugin/skills/animation-quality-gate
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/animation-quality-gate/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add RobLe3/cc-blender-skill --skill animation-quality-gate -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/RobLe3/cc-blender-skill/tree/HEAD/plugin/skills/animation-quality-gate/SKILL.md

## When to use it
- build contact sheets and frame difference reports via `scripts/animation_contact_sheet.py`
- catch texture flickering, crop pops, and erratic silhouette morphs
- verify layer separation between subject, glow, background, and HUD
- block GLB export claims that depend on runtime Blender Python handlers

## Example prompts
- Run animation-quality-gate on the latest Blender render and generate a contact sheet
- The morph looks broken, inspect silhouette stability and layer separation
- Check this animation pass against export constraints before producing GLB files

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 53b889835bc1082d.

BEGIN THIRD-PARTY FILE 53b889835bc1082d
```text
---
name: animation-quality-gate
description: Validate Blender animation attempts before accepting them by rendering contact sheets, checking silhouette stability, flicker, framing, subject dominance, layer separation, export compatibility, and motion-design coherence. Use after animation renders or when the user says motion/morph/outside elements look bad.
allowed-tools: Read Bash Glob Grep mcp__blender__execute_blender_code mcp__blender__get_scene_info mcp__blender__get_object_info mcp__blender__get_objects_summary mcp__blender__get_object_detail_summary mcp__blender__render_viewport_to_path mcp__blender__search_api_docs mcp__blender_official__execute_blender_code mcp__blender_official__get_objects_summary mcp__blender_official__get_object_detail_summary mcp__blender_official__render_viewport_to_path mcp__blender_official__search_api_docs
---


## MCP backend

Use when: Animation QA, contact-sheet review, motion critique, morph validation, texture flicker detection, storyboard checks, rejecting bad animation passes, pre-export animation acceptance gates.

Before the first Blender call, read [../text-to-blender/references/mcp-backends.md](../text-to-blender/references/mcp-backends.md). Prefer official MCP for shared capabilities; preserve the selected backend for the whole task. Tool names in recipes are client/legacy examples: map them through that reference and its agent-host guide.
# Animation Quality Gate

Do not accept an animation because it rendered. Accept it only after a contact sheet and failure analysis pass.

## Review dimensions

1. **Subject dominance** — the main asset remains readable and is not overwhelmed by HUD/context.
2. **Layer separation** — base subject, texture state, glow, HUD, and background are separate enough to control.
3. **Silhouette stability** — silhouette stays constant unless deliberate morph is specified.
4. **Texture coherence** — no ugly full-image crossfade, crop pop, or unregistered morph.
5. **Motion coherence** — arcs/dots have a reason, restrained speed, and coherent easing.
6. **Export truth** — the final export can reproduce the effect or limitations are explicit.
7. **Frame aesthetics** — sampled frames look good as stills.

## RALPH trigger

If a user calls an animation ugly/bad, stop rebuilding immediately. First:

- collect preview frames/contact sheet;
- identify the failed dimension(s);
- invoke `quality-refinement-autoloop` if the stack lacks a method;
- add/refine generic skills only after sanitization;
- only then rebuild the animation.

## Hard gates

- No final animation without a contact sheet.
- No GLB claim for texture swaps implemented only with Blender Python handlers.
```
END THIRD-PARTY FILE 53b889835bc1082d

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