Agent skill

Lattice

Generate a 3D lattice or infill pattern inside a bounding region.

LGPL-2.1Auto-check passed

Install Lattice

skills CLI

$ npx skills add ghbalf/freecad-ai --skill lattice -a claude-code

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

GitHub CLI

$ gh skill install ghbalf/freecad-ai lattice --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/ghbalf/freecad-ai.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/lattice .claude/skills/lattice && 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/

Paste into Claude Code

Install the "lattice" agent skill from https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice into .claude/skills/lattice/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lattice", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add ghbalf/freecad-ai --skill lattice -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install ghbalf/freecad-ai lattice --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ghbalf/freecad-ai.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/lattice .agents/skills/lattice && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "lattice" agent skill from https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice into .agents/skills/lattice/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lattice", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add ghbalf/freecad-ai --skill lattice -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install ghbalf/freecad-ai lattice --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ghbalf/freecad-ai.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/lattice .cursor/skills/lattice && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "lattice" agent skill from https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice into .cursor/skills/lattice/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lattice", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/ghbalf/freecad-ai.git --path skills/lattice

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add ghbalf/freecad-ai --skill lattice -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install ghbalf/freecad-ai lattice --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ghbalf/freecad-ai.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/lattice .gemini/skills/lattice && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "lattice" agent skill from https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice into .gemini/skills/lattice/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lattice", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install ghbalf/freecad-ai lattice

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add ghbalf/freecad-ai --skill lattice -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/ghbalf/freecad-ai.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/lattice .github/skills/lattice && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "lattice" agent skill from https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice into .github/skills/lattice/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lattice", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add ghbalf/freecad-ai --skill lattice -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install ghbalf/freecad-ai lattice --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ghbalf/freecad-ai.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/lattice .opencode/skills/lattice && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "lattice" agent skill from https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice into .opencode/skills/lattice/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lattice", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: lattice
GitHub stars: 552
Token cost: ~483 tokens
SKILL.md length: 221 words
Files: 1
Skills in repo: 9
Repo updated: Oct 3, 2026
First seen: Oct 7, 2026
Licence: LGPL-2.1

At a glance

Generate a 3D lattice or infill pattern inside a bounding region.

Works in 3 steps: Create a sketch with a rectangular array… → Use spacing = cell_size, hole diameter =… → Pad to height, then boolean-intersect…
SKILL.md covers Pattern types, Parameters to ask (if not…, Construction approach and Important
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Lattice is an agent skill from ghbalf/freecad-ai. Generate a 3D lattice or infill pattern inside a bounding region. Useful for lightweight structural parts.

Its SKILL.md is about 480 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: AI-powered assistant workbench for FreeCAD — generate 3D models from natural language.

Example prompts

“/lattice”

Requirements

Python 3

Workflow steps

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

Create a sketch with a rectangular array of circles or squares
Use spacing = cell_size, hole diameter = cell_size - wall_thickness
Pad to height, then boolean-intersect with the bounding shape

What it can do on your machine

Read from SKILL.md and the folder at commit 5ef1e2d. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are python).
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

Lattice loads about 483 tokens when it runs. Until then it costs about 29 tokens; SKILL.md has 221 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~29
When it runs · the whole SKILL.md, loaded when a task matches: ~483

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); files beside SKILL.md are not scanned.

SKILL.md

The full file from ghbalf/freecad-ai at commit 5ef1e2d, republished under its LGPL-2.1 licence (© ghbalf). 221 words, ~483 tokens.

Download SKILL.mdSave it as .claude/skills/lattice/SKILL.md (or your agent's skills folder).

name: lattice
description: Generate a 3D lattice or infill pattern inside a bounding region. Useful for lightweight structural parts.

Lattice / Infill Pattern

Generate a 3D lattice or infill pattern inside a bounding region. Useful for lightweight structural parts.

Pattern types

Grid: rectangular grid of holes or beams
Honeycomb: hexagonal pattern (strongest weight-to-strength ratio)
Diagonal: 45-degree crosshatch
Gyroid (advanced): triply periodic minimal surface

Parameters to ask (if not provided)

Pattern type: grid / honeycomb / diagonal
Region: existing object to fill, or bounding box dimensions
Cell size: distance between pattern centers (default 10mm)
Wall thickness: thickness of lattice walls/beams (default 1.5mm)
Height/depth: extrusion height of the pattern

Construction approach

Grid pattern

Create a sketch with a rectangular array of circles or squares
Use spacing = cell_size, hole diameter = cell_size - wall_thickness
Pad to height, then boolean-intersect with the bounding shape

Honeycomb

Create hexagonal cells: 6 line segments per cell
Hex radius = cell_size / 2
Offset rows by cell_size * 0.75 horizontally and cell_size * sqrt(3)/2 vertically
Pad and intersect with bounding shape

Diagonal crosshatch

Create parallel lines at 45 degrees, spaced by cell_size
Create second set at -45 degrees
Lines have width = wall_thickness
Pad and intersect

Important

Always create the lattice larger than the target region, then use boolean intersection to trim
Label clearly: "Lattice Grid 10mm" etc.
For 3D printing, ensure wall_thickness >= 2x nozzle diameter (typically >= 0.8mm)
After construction, hide all sketches for a clean viewport:

python

for obj in App.ActiveDocument.Objects:
    if obj.TypeId == "Sketcher::SketchObject":
        obj.Visibility = False

Files

Just SKILL.md in skills/lattice of ghbalf/freecad-ai.

Open the folder on GitHubat commit 5ef1e2d

Compare with similar skills

Lattice 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.

Lattice compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Lattice this skillghbalf/freecad-ai	552	—	~483	Automated safety check: Pass	LGPL-2.1	5 days ago
Golang Patternsaffaan-m/ECC	276k	—	~1.1k	Automated safety check: Pass	MIT	4 days ago
Kotlin Exposed Patternsaffaan-m/ECC	276k	4 repos	~5.5k	Automated safety check: Pass	MIT	4 days ago
Dotnet Patternsaffaan-m/ECC	276k	1 repos	~2.3k	Automated safety check: Pass	MIT	4 days ago
Fastapi Patternsaffaan-m/ECC	276k	—	~2.3k	Automated safety check: Pass	MIT	4 days ago
Python Patternsaffaan-m/ECC	276k	—	~2.3k	Automated safety check: Pass	MIT	4 days ago

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Questions about Lattice

What does Lattice do?

Generate a 3D lattice or infill pattern inside a bounding region. Lattice is an agent skill from ghbalf/freecad-ai. Generate a 3D lattice or infill pattern inside a bounding region.

How do I install Lattice in Claude Code?

Run `npx skills add ghbalf/freecad-ai --skill lattice -a claude-code`. Or copy the skill folder (skills/lattice in ghbalf/freecad-ai) into .claude/skills/lattice in your project. Claude Code loads it when a task matches its description.

How do I install Lattice in Codex?

Run `npx skills add ghbalf/freecad-ai --skill lattice -a codex`. Or copy the skill folder (skills/lattice in ghbalf/freecad-ai) into .agents/skills/lattice in your project. Codex loads it when a task matches its description.

Can I use Lattice 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 ghbalf/freecad-ai --skill lattice -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lattice, .gemini/skills/lattice, .github/skills/lattice and .opencode/skills/lattice in your project.

What does Lattice need to run?

SKILL.md names no scripts, command-line tools or credentials: Lattice is instructions for the agent only. Our summary lists: Python 3.

Does Lattice 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 Lattice 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. Review the folder before installing.

What licence does Lattice use?

Lattice is published under the LGPL-2.1 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Lattice use?

About 483 tokens (SKILL.md is roughly 1.9k 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 Lattice?

Skills that share tags, products or a category with Lattice: Golang Patterns (affaan-m/ECC, 276k stars), Kotlin Exposed Patterns (affaan-m/ECC, 276k stars), Dotnet Patterns (affaan-m/ECC, 276k stars) and Fastapi Patterns (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Lattice?

ghbalf (a GitHub user) maintains it in ghbalf/freecad-ai, which has 552 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 3, 2026.

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

Install Lattice

Facts

At a glance

What it does

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Lattice / Infill Pattern

Pattern types

Parameters to ask (if not provided)

Construction approach

Grid pattern

Honeycomb

Diagonal crosshatch

Important

Files

Compare with similar skills

Similar skills

More from ghbalf/freecad-ai

Questions about Lattice