blockbench-mcp-project: Skill for Claude Code

.claude/skills/blockbench-animation/SKILL.md

blockbench-animation is a skill for Claude Code from jasonjgardner/blockbench-mcp-project. It costs 59 tokens per session (962 once invoked), scanned A, original, Apache-2.0.

A set of tools for creating and editing animations for 3D models in Blockbench, a program for making low-polygon game models. It works with bones, keyframes, animation curves, and timelines.

In plain words
What is it for?
Use it to create walk cycles, idle motions, combat animations, and other multi-bone movements. It also helps adjust timing, looping, interpolation, and keyframes.
Why use it?
It removes the need to perform each animation edit manually in Blockbench. It helps organize repeated changes across bones and animations.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is jasonjgardner/blockbench-mcp-project's own configuration. It tells Claude Code how to work on blockbench-mcp-project itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything blockbench-mcp-project configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jasonjgardner/blockbench-mcp-project. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jasonjgardner/blockbench-mcp-project/main/.claude/skills/blockbench-animation/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/jasonjgardner/blockbench-mcp-project

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 962 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. Third-party audits
  • Socket pass 18 Mar 2026
  • Snyk pass 15 Feb 2026
How audits are shown
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 $0.00059 $0.00962
Opus 5 $0.00030 $0.00481
Sonnet 5 $0.00012 $0.00192
Haiku 4.5 $0.00006 $0.00096

Measured 10d ago against content hash 5855539b439c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

blockbench-animation 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 10d 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.

.claude/skills/blockbench-animation/SKILL.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blockbench Animation

Create animations for 3D models using Blockbench MCP tools.

Available Tools

Tool Purpose
create_animation Create animation with keyframes for bones
manage_keyframes Create/edit/delete keyframes per bone and channel
animation_graph_editor Fine-tune animation curves (smooth, linear, ease)
bone_rigging Create/modify bone structure for animation
animation_timeline Control playback, time, FPS, loop settings
batch_keyframe_operations Batch operations: offset, scale, reverse, mirror
animation_copy_paste Copy animation data between bones/animations

Quick Start

Create a Simple Animation

1. create_animation: name="walk", animation_length=1.0, loop=true
2. manage_keyframes: bone_name="leg_left", channel="rotation",
   keyframes=[{time: 0, values: [30, 0, 0]}, {time: 0.5, values: [-30, 0, 0]}]
3. animation_timeline: action="play"

Animation Channels

  • position - [x, y, z] offset
  • rotation - [x, y, z] degrees
  • scale - [x, y, z] or uniform number

Interpolation Types

  • linear - Constant rate
  • catmullrom - Smooth spline
  • bezier - Custom curves
  • step - Instant change

Common Workflows

Walk Cycle (1 second)

create_animation: name="walk", animation_length=1.0, loop=true, bones={
  "leg_left": [
    {time: 0, rotation: [30, 0, 0]},
    {time: 0.5, rotation: [-30, 0, 0]},
    {time: 1.0, rotation: [30, 0, 0]}
  ],
  "leg_right": [
    {time: 0, rotation: [-30, 0, 0]},
    {time: 0.5, rotation: [30, 0, 0]},
    {time: 1.0, rotation: [-30, 0, 0]}
  ]
}

Smooth Curves

animation_graph_editor: bone_name="arm", channel="rotation", action="smooth"

Copy Animation to Mirrored Bone

animation_copy_paste: action="copy", source={bone: "arm_left"}
animation_copy_paste: action="mirror_paste", target={bone: "arm_right", mirror_axis: "x"}

Batch Timing Adjustment

batch_keyframe_operations: operation="scale", selection="all",
  parameters={scale_factor: 2.0}  # Double animation duration

Read the full file on GitHub · 117 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. 10d ago First seen · 117 lines · 59 tokens per session scan A 5855539b439c

Subscribe to this mod's changes

blockbench-animation is a skill published in the GitHub repository jasonjgardner/blockbench-mcp-project (15 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 962 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 2026-08-30.

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