image-to-cad

image-to-cad is a skill for Codex from autonomous-ai/autonomous-workshop. It costs 125 tokens per session (16,182 once invoked), scanned A, original, Apache-2.0.

A specification workflow that turns a reference image into a structured plan for building a CAD model.

In plain words
What is it for?
Describing an object's overall form, top/front/side views, real-world size, visible components, feature breakdown, and the build123d operations needed to model it.
Why use it?
It makes the shape, parts, views, scale, dimensions, and construction steps explicit before geometry is created.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Describing an object's overall form, top/front/side views, real-world size, visible components, feature breakdown, and the build123d operations needed to model it.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/autonomous-ai/autonomous-workshop/image-to-cad
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 autonomous-ai/autonomous-workshop --skill image-to-cad
Clone the repo
git clone --depth 1 https://github.com/autonomous-ai/autonomous-workshop

Made for: 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 image-to-cad

README.md
[![agentmods](https://agentmods.dev/badge/skills/autonomous-ai/autonomous-workshop/image-to-cad/github.svg)](https://agentmods.dev/skills/autonomous-ai/autonomous-workshop/image-to-cad)
Your own site
<a href="https://agentmods.dev/skills/autonomous-ai/autonomous-workshop/image-to-cad"><img src="https://agentmods.dev/badge/skills/autonomous-ai/autonomous-workshop/image-to-cad/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 image-to-cad

Your own site · 80×15
<a href="https://agentmods.dev/skills/autonomous-ai/autonomous-workshop/image-to-cad"><img src="https://agentmods.dev/badge/skills/autonomous-ai/autonomous-workshop/image-to-cad.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 125 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 16,182 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
  • NVIDIA SkillSpector pass 7 Sept 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 $0.00125 $0.16182
Opus 5 $0.00063 $0.08091
Sonnet 5 $0.00025 $0.03236
Haiku 4.5 $0.00013 $0.01618

Measured 5d ago against content hash 59f505843165, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

image-to-cad 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 5d ago.

The scan reads SKILL.md. This mod also ships 5 executable files (scripts/check_likeness.py, scripts/grid_overlay.py, scripts/measure_image.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

src/workshop/make/skills/image-to-cad/SKILL.md · 1,212 lines

How it starts

The opening of the file, as written. The whole thing — 1,212 lines — stays where its author put it; the contents beside it link to each section on GitHub.

image-to-cad — read a reference image into a buildable CAD spec

Purpose

A reference image is the densest brief a user can give and the easiest to misread. This skill converts one (or several) images into a build spec: a document precise enough that the cad skill can write <name>.step.py and its gen_step() straight from it, with no second look at the photo.

You produce a document, not geometry. No .py, no STEP, no STL. The deliverable is the spec in templates/build_spec.md, which hands off to cad.

The spec has seven sections, in this order, and an eighth when the object has a functional electrical load or moves under power:

  1. Overall read — what the object is, its archetype, its construction family.
  2. Top view (plan, looking down −Z).
  3. Front view (elevation, looking along +Y).
  4. Side view (elevation, looking along +X) — then 4b, component descriptions: every visible component written out in words, before any decision about parts.
  5. Size — real-world dimensions in mm, with the scale anchor that produced them.
  6. Decomposition and design selection — printed parts, feature trees, research logs, then one evidence-backed selected design for every applicable exterior, mechanical, electrical, lighting and bought-device domain.
  7. Per-feature detail + build123d operation — one row per feature: geometry, numbers, the exact API call, the plane/selector it runs on, boolean order.
  8. Powered system / mechanism — the power boundary and electrical loads; when a part is driven, also the archetype, kinematic parameters, feasibility assertion and motion conditions.

The one rule that makes this skill work

A single photo shows you one viewpoint. The other two views are not in the image — you reconstruct them. Say so, every time, per fact:

Tag Meaning Allowed to become a hard dimension?
[observed] Directly visible and measurable in the image Yes
[inferred] Not visible, but forced by symmetry, function, or another observed fact — state the reasoning Yes, with the reasoning shown
[assumed] Neither visible nor forced; a default you chose Yes, but flagged in the Assumptions list as user-correctable

Read the full file on GitHub · 1,212 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. 5d ago Changed · +27 lines 59f505843165
  2. 9d ago First seen · 1,185 lines · 125 tokens per session scan A 2a41088636ba

Subscribe to this mod's changes

image-to-cad is a skill published in the GitHub repository autonomous-ai/autonomous-workshop (11 stars, last pushed yesterday), licensed Apache-2.0. It adds 125 tokens to every session and 16,182 once invoked, about $0.0006 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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