Agent skill

Mesh Analysis

by benchflow-ai in benchflow-ai/skillsbench

Analyzes 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data.

Apache-2.0Auto-check passed

Install Mesh Analysis

skills CLI
$ npx skills add benchflow-ai/skillsbench --skill mesh-analysis -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install benchflow-ai/skillsbench mesh-analysis --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/benchflow-ai/skillsbench.git skills-src && mkdir -p .claude/skills && cp -r skills-src/tasks/3d-scan-calc/environment/skills/mesh-analysis .claude/skills/mesh-analysis && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
mesh-analysis
GitHub stars
1.8k
Token cost
~557 tokens
SKILL.md length
217 words
Files
2 (incl. scripts)
Skills in repo
178
Repo updated
First seen
Licence
Apache-2.0

At a glance

Analyzes 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data.

  • Works in 3 steps: Geometric Analysis: Calculating volume… → Noise Filtering: Isolating the largest… → Attribute Extraction: Extracting…
  • Process noisy 3D scan data and filter debris
  • SKILL.md covers When to Use, Usage and Critical Notes
  • Runs Python scripts from its folder

What it does

Mesh Analysis is an agent skill from benchflow-ai/skillsbench. Analyzes 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data. Use this skill to process noisy 3D scan data and filter debris.

Its SKILL.md is about 560 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/mesh_tool.py`).

The repository describes itself as: SkillsBench evaluates how well skills work and how effective agents are at using them. The licence is Apache-2.0.

When your agent uses it

  • Process noisy 3D scan data and filter debris

Example prompts

  • “Use the mesh-analysis skill to analyz 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data”
  • “/mesh-analysis”

Requirements

  • Python 3

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Geometric Analysis: Calculating volume of complex or noisy meshes.
  2. Noise Filtering: Isolating the largest connected component from "dirty" scan data.
  3. Attribute Extraction: Extracting metadata (e.g. material IDs) stored in the STL file attribute bytes.

What it can do on your machine

Read from SKILL.md and the folder at commit 9a1f4dd. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Python), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Mesh Analysis loads about 557 tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 217 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~47
When it runs · the whole SKILL.md, loaded when a task matches
~557

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from benchflow-ai/skillsbench at commit 9a1f4dd, republished under its Apache-2.0 licence (© benchflow-ai). 217 words, ~557 tokens.

Download SKILL.mdSave it as .claude/skills/mesh-analysis/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
mesh-analysis
description
Analyzes 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data. Use this skill to process noisy 3D scan data and filter debris.

Mesh Analysis

This skill provides the MeshAnalyzer tool for robustly processing 3D STL files. It handles Binary STL parsing and connected component analysis.

When to Use

Use this skill for:

  1. Geometric Analysis: Calculating volume of complex or noisy meshes.
  2. Noise Filtering: Isolating the largest connected component from "dirty" scan data.
  3. Attribute Extraction: Extracting metadata (e.g. material IDs) stored in the STL file attribute bytes.

Usage

The tool is provided as a Python module in the scripts/ directory.

Basic Workflow
python
import sys
# Add skill path to sys.path
sys.path.append('/root/.claude/skills/mesh-analysis/scripts')

from mesh_tool import MeshAnalyzer

# Initialize with file path
analyzer = MeshAnalyzer('/path/to/your/file.stl')

# Analyze specific components
# Automatically identifies the largest component (main part)
report = analyzer.analyze_largest_component()

volume = report['main_part_volume']
mat_id = report['main_part_material_id']

print(f"Volume: {volume}")
print(f"Material ID: {mat_id}")
Calculating Mass

The tool provides the Volume and Material ID. To calculate Mass:

  1. Read the Material ID from the analysis report.
  2. Consult your provided material reference data (e.g. density tables) to find the density.
  3. Calculate: Mass = Volume * Density.

Critical Note on Units:

  • The Volume returned is in the same units as the STL file's coordinates (cubed).
  • Do not assume millimeters or inches. Check your task instructions for the coordinate system units (e.g., if coordinates are in cm, volume is in cm³).
  • If your density table uses the same unit (e.g., g/cm³ and cm³), multiply directly. No unit conversion is needed.

Critical Notes

  • Binary Support: The tool automatically handles Binary STL files.
  • Attribute extraction: The tool extracts the 2-byte attribute stored in the binary STL format (often used for color or material ID).

© benchflow-ai, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (scripts) in tasks/3d-scan-calc/environment/skills/mesh-analysis of benchflow-ai/skillsbench.

  • SKILL.md
  • scripts/mesh_tool.py

Open the folder on GitHubat commit 9a1f4dd

Compare with similar skills

Mesh Analysis next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Mesh Analysis compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Mesh Analysis this skillbenchflow-ai/skillsbench1.8k—~557Automated safety check: PassApache-2.0
CSS At Propertythedaviddias/Front-End-Checklist74k—~602Automated safety check: PassMIT
Agent Code Analyzerruvnet/ruflo74k3 repos~1.5kAutomated safety check: PassMIT
Agent Mesh Coordinatorruvnet/ruflo74k3 repos~3.2kAutomated safety check: PassMIT
Agent Pagerank Analyzerruvnet/ruflo74k3 repos~2.9kAutomated safety check: PassMIT
Agent Performance Analyzerruvnet/ruflo74k2 repos~1.3kAutomated safety check: PassMIT

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Questions about Mesh Analysis

What does Mesh Analysis do?

Analyzes 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data. Mesh Analysis is an agent skill from benchflow-ai/skillsbench. Analyzes 3D mesh files (STL) to calculate geometric properties (volume, components) and extract attribute data.

When should I use Mesh Analysis?

Mesh Analysis fits situations like: process noisy 3D scan data and filter debris.

How do I install Mesh Analysis in Claude Code?

Run `npx skills add benchflow-ai/skillsbench --skill mesh-analysis -a claude-code`. Or copy the skill folder (tasks/3d-scan-calc/environment/skills/mesh-analysis in benchflow-ai/skillsbench) into .claude/skills/mesh-analysis in your project. Claude Code loads it when a task matches its description.

How do I install Mesh Analysis in Codex?

Run `npx skills add benchflow-ai/skillsbench --skill mesh-analysis -a codex`. Or copy the skill folder (tasks/3d-scan-calc/environment/skills/mesh-analysis in benchflow-ai/skillsbench) into .agents/skills/mesh-analysis in your project. Codex loads it when a task matches its description.

Can I use Mesh Analysis in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add benchflow-ai/skillsbench --skill mesh-analysis -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mesh-analysis, .gemini/skills/mesh-analysis, .github/skills/mesh-analysis and .opencode/skills/mesh-analysis in your project.

What does Mesh Analysis need to run?

Going by SKILL.md and its folder, Mesh Analysis needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Mesh Analysis access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Mesh Analysis safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Mesh Analysis use?

Mesh Analysis is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Mesh Analysis use?

About 557 tokens (SKILL.md is roughly 2.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Mesh Analysis?

Skills that share tags, products or a category with Mesh Analysis: CSS At Property (thedaviddias/Front-End-Checklist, 74k stars), Agent Code Analyzer (ruvnet/ruflo, 74k stars), Agent Mesh Coordinator (ruvnet/ruflo, 74k stars) and Agent Pagerank Analyzer (ruvnet/ruflo, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mesh Analysis?

benchflow-ai (a GitHub organization) maintains it in benchflow-ai/skillsbench, which has 1,832 GitHub stars. The repository holds 178 skills in this directory. The repository was last updated on July 23, 2026.

Source: benchflow-ai/skillsbench on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.