blender-mcp: Instructions file for Claude Code

CLAUDE.md

blender-mcp CLAUDE.md is an instructions file for Claude Code from sandraschi/blender-mcp. It costs 239 tokens per session, scanned A, original, MIT.

Repository instructions for blender-mcp, an MCP server that lets an AI assistant control Blender, the 3D modelling and rendering application, using natural-language requests.

In plain words
What is it for?
Use them when developing scene, object, rendering, or other Blender integration handlers, and when running the project's tests, linter, formatter, or type checker.
Why use it?
They describe the server structure and required coding standards, so changes to Blender automation tools follow the project's conventions.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is sandraschi/blender-mcp's own configuration. It tells Claude Code how to work on blender-mcp 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 blender-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to sandraschi/blender-mcp. 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/sandraschi/blender-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/sandraschi/blender-mcp

Made for: Claude Code.

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 blender-mcp CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/sandraschi/blender-mcp/claude-md.svg)](https://agentmods.dev/instructions/sandraschi/blender-mcp/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/sandraschi/blender-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/blender-mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 239 This file is loaded in full into every session.
When invoked 239 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00239 $0.00239
Opus 5 $0.00120 $0.00120
Sonnet 5 $0.00048 $0.00048
Haiku 4.5 $0.00024 $0.00024

Measured 8d ago against content hash 185e59e045fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

blender-mcp CLAUDE.md 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 8d 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.md · 23 lines

What it actually says

blender-mcp — AI-Powered Blender Automation

AI-Powered Automation - Control Blender with natural language through MCP.

Commands

  • Dev Server: uv run python run_server.py
  • Tests: uv run pytest
  • Linting: uv run ruff check .
  • Formatting: uv run ruff format .
  • Type Check: uv run mypy src

Architecture

  • src/blender_mcp/server.py: Core FastMCP server definition.
  • src/blender_mcp/handlers/: Context-specific tool handlers (scene, object, render, etc.).
  • src/blender_mcp/utils/: Path resolution and Blender integration utilities.
  • webapp/: (If present) Dashboard for fleet visibility.

Code Style & Standards

  • Follow the Portmanteau Pattern for tool handlers.
  • All tools must be async with comprehensive docstrings.
  • Mandatory type hints for all function signatures.
  • See D:\Dev\repos\mcp-central-docs\standards\rules\mcp_registration.md for tool registration rules.
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. 8d ago First seen · 23 lines · 239 tokens per session scan A 185e59e045fc

Subscribe to this mod's changes

blender-mcp CLAUDE.md is an instructions file published in the GitHub repository sandraschi/blender-mcp (41 stars, last pushed yesterday), licensed MIT. It adds 239 tokens to every session, about $0.0012 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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