Cad Taxmap — Development skill for Claude Code

CAD TaxMap — Get Property Lines Into CAD, Fast

What this does

Give Claude a link to any county GIS portal, tell it which parcels you want, and get a CAD-ready DXF file with closed polylines on a named layer, in the correct state plane coordinates. No manual exporting, no format conversion, no coordinate headaches.

Tested on: Orange County NY, Suffolk County NY, Cortland County NY, Lehigh County PA. Works with any ArcGIS REST endpoint nationwide.

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Setup (one time, ~2 minutes)

1. Download the skill file

Download **cad-taxmap.skill** from the link in the post.

2. Install it in Claude

• Open claude.ai
• Go to Customize (left sidebar)
• Click Skills
• Click the + button
• Select Upload a skill (or "Create skill")
• Upload the cad-taxmap.skill file
• Make sure the skill toggle is on

Note: Skills require a Pro, Max, Team, or Enterprise plan.

3. Enable Code Execution and Web Search

The skill needs Claude to run Python code and access URLs:

• Go to Settings → Capabilities
• Make sure Code execution and file creation is enabled
• In any chat, make sure Web Search is enabled (Claude needs this to find REST endpoints from viewer URLs)

That's it. You're set up.

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Using it

Step 1: Find your county's GIS portal

Google `[county name] [state] GIS parcels` or `[county name] GIS viewer`. You're looking for the county's online parcel/tax map viewer. Almost every county in the US has one.

Examples of URLs that work:

• https://gisapps.suffolkcountyny.gov/gisviewer/
• https://gis.orangecountygov.com/arcgis/rest/services/...
• https://cortland-county-gis-portal-cortlandplanning.hub.arcgis.com/
• https://www.arcgis.com/apps/webappviewer/index.html?id=...

Any of these formats work. You do NOT need to find the technical REST endpoint — Claude will figure that out.

Step 2: Tell Claude what you want

Open a new chat in Claude and type something like:

Get me the parcels for the Village