text-to-cad is a collection of agent workflows for creating, examining, finding, preparing, and transferring CAD, engineering, manufacturing, and robot-description files. It is for agents working with mechanical design, fabrication, simulation, and robotics projects. Catalogue skills, instructions, and a plugin implement these workflows.
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.
npx skills add earthtojake/text-to-cad --skill cad-viewergit clone --depth 1 https://github.com/earthtojake/text-to-cadWrote 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/earthtojake/text-to-cad/cad-viewer)<a href="https://agentmods.dev/skills/earthtojake/text-to-cad/cad-viewer"><img src="https://agentmods.dev/badge/skills/earthtojake/text-to-cad/cad-viewer/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/earthtojake/text-to-cad/cad-viewer"><img src="https://agentmods.dev/badge/skills/earthtojake/text-to-cad/cad-viewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket warn
- 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 | $0.00079 | $0.01842 |
| Opus 5 | $0.00039 | $0.00921 |
| Sonnet 5 | $0.00016 | $0.00368 |
| Haiku 4.5 | $0.00008 | $0.00184 |
Grade A, and why
cad-viewer 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 6d 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 — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CAD Viewer
Provenance: maintained in earthtojake/text-to-cad. Use the installed local skill files as the runtime source of truth; the repository link is only for provenance and release review. If the user asks to modify, debug, or iterate on CAD Viewer source itself, that is the repository's work, not this skill's — this skill runs the Viewer, it is not where you edit it.
Use this skill to open existing or newly generated CAD, robot-description, or DXF files in CAD Viewer and hand back live review links. The expected input is one or more explicit file paths.
Setup
The Viewer is part of cadgen: install this skill's requirements.txt into a
Python >= 3.11 and the cadgen command carries the server and the prebuilt
client. There is nothing else to install and no Node at run time.
python -m pip install -r requirements.txt
cadgen doctor <this skill's directory> confirms the installed cadgen matches
the version this skill was published against.
Start Viewer
Launching is unconditional: the command below always ends with the URL of a
live Viewer for the launch directory. If one is already running for that
directory with the same Viewer code on disk (the reuse key is
realpath(directory) x an identity token — the cadgen version salted with the
Viewer files' newest mtime, so an upgraded Viewer never hands back a stale
instance), its URL is returned ("action": "reused");
otherwise a new server starts on the first free port from 3245 upward
("action": "started"). Never pick or reason about ports — read the URL the
command prints. Each instance serves ONE directory — the directory it is
launched from — fixed for the life of the process. There is no flag for it:
the cwd IS the served directory.
The base port
3245is0xCAD— "CAD" in hexadecimal.
cd /absolute/project/models && cadgen viewer --host 127.0.0.1 --json
(cadgen must be the one installed from this skill's requirements.txt. If it
is not on PATH, python -m cadgen.viewer with that interpreter is the same
launcher.)
What ships with it
4 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.
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.
- 6d ago Changed · +56 lines · -18 tokens per session 88acb0b2adf1
- 11d ago First seen · 91 lines · 97 tokens per session scan A fbe7f1f41b1f
cad-viewer is a skill published in the GitHub repository earthtojake/text-to-cad (15,283 stars, last pushed yesterday), licensed MIT. It adds 79 tokens to every session and 1,842 once invoked, about $0.0004 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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