HuskyBIM for Civil 3D
HuskyBIM for Civil 3D connects Claude Desktop to Autodesk Civil 3D 2027 — read and edit surfaces, alignments, profiles, pipe networks, COGO points, sites and parcels in plain language. Because Civil 3D runs on the AutoCAD core, the full 357-tool AutoCAD connector loads alongside the 89 Civil tools: 446 tools in one install. And 31 of the Civil tools work on files alone — LandXML, survey point files, terrain analysis, hydrology and coordinate conversion across 4,541 verified EPSG systems worldwide — with no CAD running at all.
Requirements
• Autodesk Civil 3D 2027 for the Civil toolset (the AutoCAD core tools also load in Civil 3D 2026)
• Windows 10 or Windows 11 (64-bit)
• Claude Desktop — download at claude.ai/download
• Free HuskyBIM account — sign up
• The 31 file-based civil tools (LandXML, point files, terrain, hydrology, coordinate conversion) need no CAD at all
Installation
Download the installer
Sign in to your account page and download HuskyBIM_for_AutoCAD_v1.7.exe from the Downloads section — it contains the Civil 3D toolset.
Run the installer
No administrator rights are needed. The installer copies the connector files, installs Node.js if needed, and configures the Claude Desktop extension automatically.
Enter your account email
When prompted, enter the email address for your free HuskyBIM account. The installer validates your account and finishes setup.
Restart Civil 3D and Claude Desktop
Open Civil 3D 2027 with a drawing, then restart Claude Desktop. The connector detects Civil 3D and the Civil tools appear alongside the AutoCAD tools.
What you can do
The Civil toolset covers 89 tools on top of the full AutoCAD connector:
• Read the model — surfaces (properties, elevation and slope at any XY), alignments and their geometry, profiles, pipe networks with pipes and structures, COGO points and point groups, sites and parcels, corridors and feature lines
• Create & edit — create COGO points, point groups, sites, TIN surfaces (and add vertices), feature lines, pipe networks and surface profiles sampled from a surface; rename, re-describe or delete any object by handle
• Corridor modelling — create assemblies; import any of 122 catalog subassemblies by class name (BasicLane, DaylightGeneral, curbs, shoulders …) or build them from plain polylines; assign daylight surface targets; create a corridor from alignment + profile + assembly in one call; deep-read baselines, regions, stations, applied assemblies and codes; export the corridor as 3D solids or as COGO points; rebuild on demand
• Civil calculations & earthworks — bounded surface volumes, TIN volume surfaces between existing ground and a corridor surface (cut/fill for the DESIGNED road), sample line groups with cross-sections carrying real elevations, plus direct cross-section sampling at any station, and alignment station ↔ coordinate conversion
\n • Pressure networks — read water-supply networks: pipes with diameters and cover, fittings and appurtenances
\n • 4D construction scheduling (no CAD needed) — turn quantity takeoffs into a construction schedule: durations from overridable production rates, finish-to-start logic in build order, and a model reference on every task — feed it straight to HuskyBIM for MS Project for a live 4D plan
• LandXML & survey files (no CAD needed) — read and write LandXML surfaces and COGO points; read and write survey point files (CSV in any column order); convert between the two
• Terrain analysis (no CAD needed) — Delaunay-triangulate raw point clouds into TINs, interpolate elevations, compute earthworks cut/fill volumes between two surfaces, generate contour lines, and analyse slope and aspect
• Hydrology (no CAD needed) — D8 flow accumulation to find drainage channels and outlets, and watershed delineation for any outlet point — straight from a LandXML surface or a raw survey point cloud
• Coordinates worldwide (no CAD needed) — transform between 4,541 verified EPSG coordinate reference systems: US State Plane (all zones, incl. US survey feet), GDA2020/MGA, British National Grid, Swiss LV95, Dutch RD, Gauss-Krüger, Japan, New Zealand and more — every zone individually verified against PROJ, with the measured accuracy reported. Plus UTM ↔ latitude/longitude and Danish System 34/45 ↔ ETRS89 via the official KMS polynomial tables
• Exports & takeoffs (no CAD needed) — GeoJSON, KML, DXF points and ESRI DEM grids; quantity takeoffs from LandXML whose line items feed straight into HuskyBIM for Sigma Estimates for pricing
Example workflows
What is the elevation and slope of surface EG at (4255, 3679)? Then compute the cut/fill volume of the surface inside this boundary polygon.For alignment "Power Line", what coordinate is at station 500? And what station and offset is the point (4300, 3700) at?Read survey.csv (PENZD format), triangulate it, find the drainage channels and the outlet, then delineate the watershed draining to that outlet and give me the catchment area.Draw a lane cross-section polyline, make it a subassembly, attach it to a new assembly, then create a corridor along "Power Line" with the EG profile and tell me how many assemblies were applied.Convert these NAD83 California zone 3 coordinates (US survey feet) to WGS84 — and what EPSG code is the metric variant?Convert System 34 Jylland (y 200000, x 200000) to ETRS89/UTM32 and latitude/longitude.Run a quantity takeoff on site.xml with earthwork against datum 55.0, then add the line items to my open Sigma estimate.Troubleshooting
Ensure Civil 3D 2027 is running with a drawing open and that Claude Desktop has been restarted after installation. The Civil toolset loads when the connector detects Civil 3D at startup — if you started plain AutoCAD, only the AutoCAD tools are active.
The Civil toolset talks to Civil 3D over local port 14273. The connection is only active while Civil 3D is open with a document — open a drawing first, then send your prompt. The file-based tools (LandXML, point files, terrain, hydrology, System 34) work regardless.
If activation fails, a message will appear at the end of installation. Your files are still installed — re-run the installer with the correct email. Contact [email protected] if the issue persists.
Learn more
See the guide: AI for AutoCAD — draft & automate with Claude, or browse all HuskyBIM guides.