Agent Stuff is a personal package of reusable skills, extensions, prompt commands, themes, and utilities for the Pi Coding Agent. Its author uses these tools across projects, and the catalogue entries are components from this package that support that workflow.
Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/mitsuhiko/agent-stuffnpx agentmods add skills/mitsuhiko/agent-stuff/openscadWrote 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.
[](https://agentmods.dev/skills/mitsuhiko/agent-stuff/openscad)<a href="https://agentmods.dev/skills/mitsuhiko/agent-stuff/openscad"><img src="https://agentmods.dev/badge/skills/mitsuhiko/agent-stuff/openscad/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.
<a href="https://agentmods.dev/skills/mitsuhiko/agent-stuff/openscad"><img src="https://agentmods.dev/badge/skills/mitsuhiko/agent-stuff/openscad.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00042 | $0.01716 |
| Opus 5.5 | $0.00017 | $0.00686 |
| Sonnet 5.5 | $0.00008 | $0.00343 |
| Haiku 4.5 | $0.00004 | $0.00172 |
Grade A, and why
openscad 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OpenSCAD Skill
Create, validate, and export OpenSCAD 3D models. Supports parameter customization, visual preview from multiple angles, and STL export for 3D printing platforms like MakerWorld.
Prerequisites
OpenSCAD must be installed. Install via Homebrew:
brew install openscad
Tools
This skill provides several tools in the tools/ directory:
Preview Generation
# Generate a single preview image
./tools/preview.sh model.scad output.png [--camera=x,y,z,tx,ty,tz,dist] [--size=800x600]
# Generate multi-angle preview (front, back, left, right, top, iso)
./tools/multi-preview.sh model.scad output_dir/
STL Export
# Export to STL for 3D printing
./tools/export-stl.sh model.scad output.stl [-D 'param=value']
Parameter Extraction
# Extract customizable parameters from an OpenSCAD file
./tools/extract-params.sh model.scad
Validation
# Check for syntax errors and warnings
./tools/validate.sh model.scad
Visual Validation (Required)
Always validate your OpenSCAD models visually after creating or modifying them.
After writing or editing any OpenSCAD file:
- Generate multi-angle previews using
multi-preview.sh - View each generated image using the
readtool - Check for issues from multiple perspectives:
- Front/back: Verify symmetry, features, and proportions
- Left/right: Check depth and side profiles
- Top: Ensure top features are correct
- Isometric: Overall shape validation
- Iterate if needed: If something looks wrong, fix the code and re-validate
This catches issues that syntax validation alone cannot detect:
- Inverted normals or inside-out geometry
- Misaligned features or incorrect boolean operations
- Proportions that don't match the intended design
- Missing or floating geometry
- Z-fighting or overlapping surfaces
Never deliver an OpenSCAD model without visually confirming it looks correct from multiple angles.
Workflow
What ships with it
9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- examples/parametric_box.scad 2.6 KB
- examples/phone_stand.scad 3.1 KB
- tools/common.sh 1.1 KB runs code
- tools/export-stl.sh 1.1 KB runs code
- tools/extract-params.sh 4.3 KB runs code
- tools/multi-preview.sh 1.4 KB runs code
- tools/preview.sh 1.6 KB runs code
- tools/render-with-params.sh 2.1 KB runs code
- tools/validate.sh 954 B runs code
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.
- 1mo ago First seen · 233 lines · 42 tokens per session scan A e49b7c056c4f
openscad is a skill published in the GitHub repository mitsuhiko/agent-stuff (3,192 stars, last pushed 21d ago), licensed Apache-2.0. It adds 42 tokens to every session and 1,716 once invoked, about $0.0002 per session on Opus 5.5. 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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