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design-drawing-svg-md

design-drawing-svg-md is a skill for Claude Code, Codex from znlgis/opengis-skills. It costs 61 tokens per session (5,711 once invoked), scanned A, original, MIT.

A method for turning vector PDF engineering drawings into linked Markdown notes and SVG geometry files. It is designed for drawings without a usable text layer, where labels are stored as shapes instead of readable text.

In plain words
What is it for?
It is for processing steel-structure shop drawings and similar vector engineering plans. The resulting records can support drawing search, controlled revisions, and downstream design tasks.
Why use it?
It gives an AI agent both the meaning of the drawing and its exact geometry. This helps with questions, redraws, quantity checks, bills of materials, and comparing drawing revisions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 61repo +3 changed 7d ago A scan SkillSpector: pass 61 tokens original MIT

Good fit It is for processing steel-structure shop drawings and similar vector engineering plans. The resulting records can support drawing search, controlled revisions, and downstream design tasks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/znlgis/opengis-skills/design-drawing-svg-md
View source ↗ znlgis/opengis-skills
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 znlgis/opengis-skills --skill design-drawing-svg-md
Clone the repo
git clone --depth 1 https://github.com/znlgis/opengis-skills

Made for: Claude Code, 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 design-drawing-svg-md

README.md
[![agentmods](https://agentmods.dev/badge/skills/znlgis/opengis-skills/design-drawing-svg-md/github.svg)](https://agentmods.dev/skills/znlgis/opengis-skills/design-drawing-svg-md)
Your own site
<a href="https://agentmods.dev/skills/znlgis/opengis-skills/design-drawing-svg-md"><img src="https://agentmods.dev/badge/skills/znlgis/opengis-skills/design-drawing-svg-md/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 design-drawing-svg-md

Your own site · 80×15
<a href="https://agentmods.dev/skills/znlgis/opengis-skills/design-drawing-svg-md"><img src="https://agentmods.dev/badge/skills/znlgis/opengis-skills/design-drawing-svg-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,711 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 $0.00061 $0.05711
Opus 5 $0.00030 $0.02856
Sonnet 5 $0.00012 $0.01142
Haiku 4.5 $0.00006 $0.00571

Measured 7d ago against content hash 7cdc967be5d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

design-drawing-svg-md 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 7d ago.

The scan reads SKILL.md. This mod also ships 13 executable files (scripts/01_extract.py, scripts/02_cluster_views.py, scripts/03_render_regions.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.

cad/design-drawing-svg-md/SKILL.md · 260 lines

How it starts

The opening of the file, as written. The whole thing — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.

技能定位： 设计图 SVG+MD 双载体记录方法论——把"会画不懂"的矢量 PDF 工程图，转化为大模型能准确理解、指认与复刻的交付物。

方法来源： 一套钢结构施工图数字化执行方案的固化与泛化；文中数字为示例值或多图实测值，执行时以实际图纸实测为准。

适用输入： 矢量线画 + 无文字层的 PDF 工程图（彩色分层或单色均可）。

脚本资产： 本仓库 scripts/ 目录附带可直接复跑的泛化脚本——共用库 scripts/common.py、入口配置 scripts/config.example.json、十一阶段脚本 01_extract.py … 09_verify_deliverables.py（执行顺序与门禁见 reference/pipeline.md）。

概述

MD 是"大模型阅读主线"，SVG 是"高精度几何档案 + 按需切片源"，两者用统一 ID 体系互联，用校验闭环保证一致。

何时使用

  • 需要让大模型/Agent 理解一份工程图纸（几何、尺寸、语义、工艺、管理信息）
  • 源图为 PDF，且是矢量线画、无文字层（尺寸数字只是 glyph 轮廓路径，直接渲染"会画不会读"）
  • 需要对图纸做问答、复刻重绘、改图、核量、生成 BOM 等下游任务
  • 图纸会换版（R00→R01），需要可 diff、可追溯的数字化档案

何时不使用

  • 源图已有文字层且无需精确几何 → 直接 PDF 文本提取即可
  • 只需一张渲染图给人看，无下游智能任务 → 不必建双载体
  • 栅格扫描件 → 本技能不覆盖矢量化（OCR/矢量化另案处理）

适用对象

A0 钢结构施工图（无文字层的矢量线画）为典型用例；任何"矢量线画 + 无文字层"的 PDF 工程图均可套用。

核心概念

双载体定位

原图 PDF（矢量线画 / 无文字层 / 彩色分层）
   │  提取（fitz.get_drawings + 分层：OCG 语义优先 + 颜色兜底）
   ▼
MD（魂·阅读主线） ◄── ID 互联（view/dim/balloon/prim-id + crosswalk） ──► SVG（骨·几何档案）
语义/参数/值/工艺/BOM                                       原生坐标/图层/视图分组/文本
   │                                                                    │
   └──────── 校验闭环（MD 重绘 ⇄ SVG 叠合 ⇄ 原图）──────────────────────┘
   └──────── 消费（MD 全文分块 + SVG 按视图切片）────────────────────────┘

三条设计原则

  1. 单一事实源：每类信息只在一处为"真"，另一处只引用不复制（分工矩阵见下），避免双份漂移。
  2. ID 互联而非坐标复制：MD 保留局部 mm 参数坐标（可编辑），SVG 保留页面 pt 原生坐标（精确），换算关系写入 crosswalk。
  3. token 可行：MB 级 SVG 不整份进上下文；MD 为索引，SVG 按 data-view 切片按需取。

为什么不只用单一载体

载体 优势 短板
仅 SVG 像素级可复刻 对模型是坐标流——"会画不懂"（无文字层时尺寸数字只是轮廓路径）
仅 MD 结构语义可读、可编辑 "看懂画不准"（细节图元易被省略、无法精确指认）

理解准确性的四个分量

大模型"准确理解" = 几何精度 × 语义完整 × 可指认 × token 可行，缺一不可：

分量 含义 落点
几何精度 每条线的位置/类型/参数可复现 SVG 原生坐标 + MD 参数图元互校
语义完整 每根线"是什么"、每个视图"看的是什么"、工艺与管理要求 MD 语义层 + SVG data-* 属性
可指认 文档里每句话能定位到原图确切位置 ID + crosswalk + 布局表
token 可行 装得进上下文 MD 分块读、SVG 按视图切片读

Read the full file on GitHub · 260 lines

Files

What ships with it

17 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.

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. 7d ago Changed · +35 lines 7cdc967be5d6
  2. 9d ago First seen · 225 lines · 61 tokens per session scan A df7805d80d5b

Subscribe to this mod's changes

design-drawing-svg-md is a skill published in the GitHub repository znlgis/opengis-skills (61 stars, last pushed yesterday), licensed MIT. It adds 61 tokens to every session and 5,711 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 2026-09-03.

Design and UXDocumentsLLMPDFcaddrawingmarkdownsteel-structuresvgworkflow
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