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 CodingFeng101/CanvasAnvil --skill cad-skillgit clone --depth 1 https://github.com/CodingFeng101/CanvasAnvilWrote 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/codingfeng101/canvasanvil/cad-skill)<a href="https://agentmods.dev/skills/codingfeng101/canvasanvil/cad-skill"><img src="https://agentmods.dev/badge/skills/codingfeng101/canvasanvil/cad-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/codingfeng101/canvasanvil/cad-skill"><img src="https://agentmods.dev/badge/skills/codingfeng101/canvasanvil/cad-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 | $0.00053 | $0.01079 |
| Opus 5.5 | $0.00021 | $0.00432 |
| Sonnet 5.5 | $0.00011 | $0.00216 |
| Haiku 4.5 | $0.00005 | $0.00108 |
Grade A, and why
cad-skill 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
41 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.
- agents/openai.yaml 300 B
- config/image-provider.json 51 B
- package.json 334 B
- prompts/analysis-images.md 347 B
- prompts/bom.md 1.9 KB
- prompts/detail-drawings.md 3.4 KB
- prompts/elevation-index-and-interior-elevations.md 3.7 KB
- prompts/floor-finish-plan.md 3.2 KB
- prompts/images-master.md 437 B
- prompts/images-sheet.md 675 B
- prompts/key-strategy-board.md 1.7 KB
- prompts/master-renovation-scheme.md 2.1 KB
- prompts/mep-plan.md 3.6 KB
- prompts/overall-analysis-board.md 1.7 KB
- prompts/plan.md 3.0 KB
- prompts/reflected-ceiling-plan.md 3.4 KB
- prompts/renovation-plan-layout.md 4.1 KB
- prompts/router.md 713 B
- prompts/svg-patch.md 11 KB
- prompts/svg-replace.md 11 KB
- prompts/svg-router.md 1.5 KB
- prompts/wall-setting-out-plan.md 3.7 KB
- references/image-agents/detail-drawings.md 3.4 KB
- references/image-agents/elevation-index-and-interior-elevations.md 3.7 KB
- references/image-agents/floor-finish-plan.md 3.2 KB
- references/image-agents/key-strategy-board.md 1.7 KB
- references/image-agents/master-renovation-scheme.md 2.1 KB
- references/image-agents/mep-plan.md 3.6 KB
- references/image-agents/overall-analysis-board.md 1.7 KB
- references/image-agents/reflected-ceiling-plan.md 3.4 KB
- references/image-agents/renovation-plan-layout.md 4.1 KB
- references/image-agents/wall-setting-out-plan.md 3.7 KB
- references/image-provider-config.md 818 B
- references/output-contract.md 430 B
- references/task-types.md 672 B
- scripts/build-cad-bundle.mjs 3.6 KB runs code
- scripts/export-cad-2d-image.mjs 3.6 KB runs code
- scripts/generate-cad-image.mjs 3.0 KB runs code
- scripts/lib/gateway.mjs 4.1 KB runs code
- scripts/lib/image-route.d.mts 656 B
- scripts/lib/image-route.mjs 794 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 Changed · -12 lines cc2bc3b021f2
- 1mo ago First seen · 149 lines · 53 tokens per session scan A 6c1eef8b1cbc
cad-skill is a skill published in the GitHub repository CodingFeng101/CanvasAnvil (97 stars, last pushed 1mo ago), licensed AGPL-3.0. It adds 53 tokens to every session and 1,079 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.
Other skills, from other repositories
cocosketch
Generate visual draw.io diagrams from CocoPlus artifacts via a deterministic seven-step pipeline.
drawio-skill
Create and edit draw.io/diagrams.net diagrams as editable .drawio files. Covers architecture, UML/ERD/sequence, BPMN, network, and swimlane views authored from a description or converted from code, IaC, SQL, and API schemas, plus sync, query, test, review, export, and publish of existing diagrams. Use when the user…
design-drawing-svg-md
Use when converting vector PDF engineering drawings (steel-structure shop drawings, A0 drawings, linework-only PDFs without a text layer) into LLM-consumable dual-carrier records — semantic Markdown reading thread plus layered SVG geometry archive linked by shared IDs and crosswalk.
bruce-drawio
Use this skill when the user wants to create any diagram: flowchart, architecture, UML (sequence/class), ER, mindmap, network topology, or any visual diagram. Trigger words: "draw", "diagram", "flowchart", "architecture", "UML", "sequence diagram", "mindmap", "ER diagram", "network topology", "visualize", "draw.io"…
FlowForge
A draw.io diagram tool that turns a description or document into editable visual diagrams. Draw.io is software for making flowcharts, system diagrams, and other structured illustrations.
svg-diagram
An SVG diagram generator for structured visuals such as architecture diagrams, flowcharts, sequence diagrams, hierarchy charts, and comparisons. SVG is a web image format that keeps diagrams sharp and allows flexible layouts.