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 partcad/partcad --skill convertgit clone --depth 1 https://github.com/partcad/partcadWrote 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/partcad/partcad/convert)<a href="https://agentmods.dev/skills/partcad/partcad/convert"><img src="https://agentmods.dev/badge/skills/partcad/partcad/convert/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/partcad/partcad/convert"><img src="https://agentmods.dev/badge/skills/partcad/partcad/convert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00144 | $0.01645 |
| Opus 5.5 | $0.00058 | $0.00658 |
| Sonnet 5.5 | $0.00029 | $0.00329 |
| Haiku 4.5 | $0.00014 | $0.00164 |
Grade A, and why
convert 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 — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.
pc:convert
Turn geometry into another geometry format. $ARGUMENTS says what to convert and
to what.
Two commands do this, and picking the right one is most of the job:
pc convert— an object a package declares. It writes the file and rewrites the object's definition inpartcad.yamlto point at it: the part becomes the new format.pc adhoc convert— a file that belongs to no package. File in, file out; no package is created, read, or changed.
If the user wants a file without changing what the object is, that is
/pc:export. If they want a picture, that is /pc:render.
1. Work out which case you are in
Do this before running anything. It is the same first step in /pc:render and
/pc:export.
- Is there a package? PartCAD searches upward for
partcad.yaml, so look in the current directory and above.pc --no-ansi listlists what the package holds; if there is no package it says so. - Does the reference name an object? Check it against
pc --no-ansi list parts/list sketches/list assemblies.pc --no-ansi info <name>succeeds only for an object that resolves. - Does a file the user named belong to an object? Someone who says
"convert
bracket.step" inside a package usually means the part built from it. Readpartcad.yamland look for an object whosepath:is that file — and note that a file-backed object without apath:is<name>plus the type's extension, so a partbracketof typestepisbracket.stepwhether or not the path is written down.
If 2 or 3 matched, it is an object: use pc convert (§3). Converting its
file behind the package's back would leave partcad.yaml describing a format
that is no longer there.
If there is no package, or the file is not one an object is built from, it is
ad-hoc: use pc adhoc convert (§4).
When it is genuinely ambiguous — a package exists and the file sits inside it but nothing declares it — say which you picked and why, rather than guessing silently.
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 · 125 lines · 144 tokens per session scan A 19c3693ca0b4
convert is a skill published in the GitHub repository partcad/partcad (509 stars, last pushed today), licensed Apache-2.0. It adds 144 tokens to every session and 1,645 once invoked, about $0.0006 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 2026-09-03.
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