blockbench-use

blockbench-use is a skill for Claude Code, Codex from jasonjgardner/blockbench-mcp-project. It costs 146 tokens per session (1,605 once invoked), scanned A, original, Apache-2.0.

A required planning skill for Blockbench, a tool for creating 3D models, textures, and animations. It selects the relevant modelling skills, checks the project setup, and guides the work before Blockbench content is changed or exported.

In plain words
What is it for?
It helps organise Blockbench work involving meshes, hierarchies, textures, materials, animations, exports, and validation.
Why use it?
It reduces setup mistakes by checking the project and format, choosing the right workflow, and adding checkpoints for edits that may need to be undone.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps organise Blockbench work involving meshes, hierarchies, textures, materials, animations, exports, and validation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jasonjgardner/blockbench-mcp-project/blockbench-use
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 jasonjgardner/blockbench-mcp-project --skill blockbench-use
Clone the repo
git clone --depth 1 https://github.com/jasonjgardner/blockbench-mcp-project

Made for: Claude Code, Codex.

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 blockbench-use

README.md
[![agentmods](https://agentmods.dev/badge/skills/jasonjgardner/blockbench-mcp-project/blockbench-use/github.svg)](https://agentmods.dev/skills/jasonjgardner/blockbench-mcp-project/blockbench-use)
Your own site
<a href="https://agentmods.dev/skills/jasonjgardner/blockbench-mcp-project/blockbench-use"><img src="https://agentmods.dev/badge/skills/jasonjgardner/blockbench-mcp-project/blockbench-use/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 blockbench-use

Your own site · 80×15
<a href="https://agentmods.dev/skills/jasonjgardner/blockbench-mcp-project/blockbench-use"><img src="https://agentmods.dev/badge/skills/jasonjgardner/blockbench-mcp-project/blockbench-use.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 146 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,605 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 13 Jun 2026
  • Snyk pass 13 Jun 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 $0.00146 $0.01605
Opus 5 $0.00073 $0.00803
Sonnet 5 $0.00029 $0.00321
Haiku 4.5 $0.00015 $0.00161

Measured 9d ago against content hash c9a58c064093, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

blockbench-use 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 9d 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/blockbench-use/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blockbench Use

Orchestrator for Blockbench MCP work. Load this before touching the 3D scene so the right sub-skills load and the right pre-flight checks run.

Rule

Any request that will call an mcp__blockbench__* tool to create or modify content must go through this skill first.

Steps, in order:

  1. Classify the request → pick one or more sub-skills (table below).
  2. Pre-flight → confirm a project is open and the format is correct (see "Pre-flight checks").
  3. Load the sub-skill(s) via the Skill tool.
  4. Checkpoint before risk → call save_checkpoint for multi-step edits that might need rollback.
  5. Execute the sub-skill's workflow.
  6. Close the loop → screenshot, validate (Hytale), or export if the user asked for a deliverable.

Skill routing table

Pick by primary intent. When the task spans domains, load all relevant skills before starting.

User intent Primary skill Also load when…
Build cubes, meshes, groups, hierarchy blockbench-modeling needs texture → blockbench-texturing
Paint, fill, draw, brush, layers, UV blockbench-texturing channel-aware (normal/MER) → blockbench-pbr-materials
Keyframes, bone rigs, walk/idle/attack blockbench-animation bones need geometry first → blockbench-modeling
.texture_set.json, normal/height/MER blockbench-pbr-materials textures not yet drawn → blockbench-texturing
.blockymodel, .blockyanim, attachments, quads, stretch, shading modes blockbench-hytale modeling/animation parts → those skills
"What tools are available?" / unclear scope blockbench-mcp-overview
Write a Blockbench JS plugin (not use MCP) blockbench-plugins (from blockbench-development/)

Skip this skill for pure research questions (API docs, "how does Blockbench work?"). Go straight to blockbench-mcp-overview.

Pre-flight checks

Run before any mutation. One round of list_outline + list_textures is usually enough.

Read the full file on GitHub · 126 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. 9d ago First seen · 126 lines · 146 tokens per session scan A c9a58c064093

Subscribe to this mod's changes

blockbench-use is a skill published in the GitHub repository jasonjgardner/blockbench-mcp-project (15 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 146 tokens to every session and 1,605 once invoked, about $0.0007 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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