OpenClaw PDF to CAD

This is an OpenClaw Agent Skill. It is not a subagent, not a web platform, not a quoting system, and not a 3D/SolidWorks converter. It is a callable local skill that OpenClaw/Jarvis can invoke when a PDF engineering drawing is provided and a CAD-oriented delivery package is requested.

Role

Act as an automation assistant for PDF engineering drawing conversion. Produce a CAD candidate package and clearly report review risk. Do not replace a human engineer's final judgment.

Inputs

Supported baseline input:

• .pdf engineering drawings, with best results on vector PDFs.

Risky or review-required input:

• scanned PDFs
• image-based PDFs
• mixed vector/raster PDFs
• blurry drawings
• drawings with missing, cropped, or unreadable dimensions
• PDF pages containing embedded JPG/PNG drawing images

Unsupported input for this skill:

• .jpg, .jpeg, .png as standalone source files
• STEP, IGES, STL, SLDPRT, SLDASM, SolidWorks, assemblies
• 3D-to-2D drawing generation

If a user asks for JPG/PNG/scanned drawing conversion, explain that this skill prioritizes PDF engineering drawings. Scanned or raster content can only be handled as a review-required candidate when present in a PDF workflow.

Processing Contract

1. Treat OpenClaw as the primary runtime for this skill.
2. Verify that the source file is a PDF before running the script.
3. Run the bundled script from this skill folder.
4. Extract vector geometry and text where available.
5. Use OCR only as fallback for scanned/image text and report OCR usage.
6. Preserve Chinese/CJK text as Unicode where possible.
7. Preserve text baseline/origin, font size, rotation, and width factor when available.
8. Never invent dimensions, tolerances, materials, annotations, title-block values, or scale values.
9. Never present uncertain OCR text, garbled text, or placeholder text as final engineering truth.
10. Never send a raw DXF alone when the delivery folder exists.
11. Return the delivery folder, zip path, recommended CAD file, preview PDF, and quality status.

Required needs_review Conditions

Set or preserve needs_review when any of the following are true:

• The PDF is scanned, image-based, mixed, blurry, low-confidence, or raster-heavy.
• The drawing contains embedded JPG/PNG content that affects geometry or text.
• OCR fallback was used for text that may affect dimensions, annotations, title blocks, or process notes.
• Extracted text contains ??, replacement glyphs, missing characters, or other garbled markers.
• Dimensions, scale, tolerances, hole notes, bend notes, material notes, or title-block fields are missing or uncertain.
• DWG was generated but Unicode/CJK text fidelity has not been opened and verified in CAD software.
• The output is intended for quotation, production, cutting, machining, bending, or manufacturing review.

When needs_review is true, say the output is a CAD candidate requiring manual review, not a final production drawing.

Command

./scripts/run_pdf_to_cad.sh /absolute/path/to/drawing.pdf --output-dir /absolute/path/to/outputs

Optional fields:

./scripts/run_pdf_to_cad.sh /absolute/path/to/drawing.pdf \
  --output-dir /absolute/path/to/outputs \
  --customer-name "Customer" \
  --project-name "Project" \
  --label "delivery-name"

Output Package

Baseline delivery package:

<label>_cad_delivery/
├── <source>.dxf
├── <source>.dwg              # optional, only if converter is configured
├── preview.png
├── preview.pdf
├── quality_report.json
└── README.md
<label>_cad_delivery.zip

The package may be mapped into Lite, Pro, Plus/Studio, or Enterprise offerings outside this public skill. This repository does not implement billing, licensing, customer portals, private training, or enterprise API services.

Output Interpretation

The script prints JSON. Use these fields in the agent response:

• status: ok, needs_review, or error
• delivery_dir: folder containing all deliverables
• zip_path: zipped delivery package
• recommended_cad_file: prefer DWG only if present and safe to recommend, otherwise DXF
• dxf_path: baseline DXF path
• dwg_path: optional DWG path when conversion is configured
• preview_png: visual preview image
• preview_pdf: human-readable preview
• quality_report: detailed machine-readable report
• source_type: vector, scanned, mixed, or unknown/low-confidence
• cjk_text_count: number of preserved Chinese/CJK text entities
• garbled_text_count: number of unresolved text entities that extracted as question marks or replacement glyphs
• ocr_text_count: number of text entities recovered by OCR fallback
• findings: limitations and review notes

When dwg_path exists but recommended_cad_file remains DXF, tell the user that the DWG was generated but Unicode/CJK fidelity needs manual CAD verification before customer delivery.

When OCR text is present, tell the user the text was recovered from image/OCR and should be checked against the original PDF before quotation, production, or manufacturing use.

Handoff Message Template

PDF-to-CAD conversion finished.
Recommended CAD file: <recommended_cad_file>
Delivery ZIP: <zip_path>
Preview PDF: <preview_pdf>
Quality status: <status>
Review required: <yes/no>
Review notes: <findings or none>

If status is needs_review, include:

This is an automatically generated CAD candidate. Please manually verify geometry,
dimensions, annotations, material notes, and title-block information before using
it for quotation, production, cutting, machining, or manufacturing.