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 Foster1202/cad-modeling-fusion-skill --skill cad-modeling-fusion-skillgit clone --depth 1 https://github.com/Foster1202/cad-modeling-fusion-skillWrote 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/foster1202/cad-modeling-fusion-skill/cad-modeling-fusion-skill)<a href="https://agentmods.dev/skills/foster1202/cad-modeling-fusion-skill/cad-modeling-fusion-skill"><img src="https://agentmods.dev/badge/skills/foster1202/cad-modeling-fusion-skill/cad-modeling-fusion-skill/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/foster1202/cad-modeling-fusion-skill/cad-modeling-fusion-skill"><img src="https://agentmods.dev/badge/skills/foster1202/cad-modeling-fusion-skill/cad-modeling-fusion-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00066 | $0.01110 |
| Opus 5 | $0.00033 | $0.00555 |
| Sonnet 5 | $0.00013 | $0.00222 |
| Haiku 4.5 | $0.00007 | $0.00111 |
Grade A, and why
cad-modeling-fusion 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 12d 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 — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CAD Modeling Fusion Skill
Use this skill when a user wants a parametric CAD model, a validated CAD model specification, generated Autodesk Fusion Python code, fallback FreeCAD/OpenSCAD code, or export guidance for STEP/STL/OBJ/F3D workflows.
Do not use this skill for pure mesh sculpting, animation, rendering-only scenes, destructive edits to user CAD files, or executing untrusted generated code without explicit confirmation.
Workflow
- Parse the request into a
ModelSpecJSON object. - Ask clarifying questions only when critical dimensions, units, or manufacturing requirements are missing and cannot be inferred.
- Validate the spec with
scripts/validate_spec.pyorcad_skill.validators. - Choose a backend:
fusionfirst,freecadwhen Fusion is unavailable, andopenscadfor simple CSG previews. - Generate code with
scripts/generate_model.py. - Save generated files under
outputs/<model_name>/. - If execution is requested, run the script in the CAD tool or use the optional Computer Use plan from
cad_skill.computer_use_adapter. - Report files created, assumptions, validation issues, run instructions, and known limitations.
Safety
- Prefer official scripting APIs over GUI automation.
- Never overwrite, delete, or move user files unless explicitly requested.
- Keep generated scripts in a dedicated output directory.
- Validate units, dimensions, wall thickness, backend feature support, and export requests before generation.
- Treat Computer Use as optional and platform-specific.
Scripts
- Generate code:
python scripts/generate_model.py --spec assets/examples/mounting_bracket/example.spec.json --backend fusion --out outputs/mounting_bracket - Generate all examples:
python scripts/generate_all_examples.py --backend all --overwrite - Validate only:
python scripts/validate_spec.py assets/examples/phone_stand/example.spec.json --strict - Preview plan:
python scripts/render_preview.py --spec assets/examples/simple_gear/example.spec.json --backend openscad - Fusion run plan:
python scripts/run_fusion_script.py outputs/mounting_bracket/mounting_bracket_fusion.py
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.
- 12d ago First seen · 65 lines · 66 tokens per session scan A 26f6cb52fc58
cad-modeling-fusion is a skill published in the GitHub repository Foster1202/cad-modeling-fusion-skill (2 stars, last pushed 1mo ago), licensed MIT. It adds 66 tokens to every session and 1,110 once invoked, about $0.0003 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 2026-08-31.
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