c3d-alignments

Automate creation, modification, and querying of Civil 3D alignments.

3|Updated Feb 17, 2026
One-click install
npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-alignments
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: c3d-alignments
Source: https://github.com/hebackus/c3d-api-plugin/tree/main/skills/c3d-alignments
Command: npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-alignments

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Alignments are central to Civil 3D design workflows, and manual management can be error-prone and time-consuming. This skill enables programmatic creation, modification, and querying of alignments, including stations, design speeds, and superelevation, reducing manual editing and enabling repeatable workflows.

Core Features & Use Cases

  • Create new alignments from polylines or by explicit parameters.
  • Modify existing alignments, access station data, and inspect superelevation.
  • Query alignment data across a project and export data for reports.
  • Use Case: Batch-generate alignments for a subdivision design and validate station data and design speeds.

Quick Start

Create a simple alignment by name in your Civil 3D document using the alignment API

Frequently Asked Questions about c3d-alignments

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate Civil 3D alignment creation and station management?

You can automate Civil 3D alignment management by programmatically creating, modifying, and querying alignments, including station data and design speeds, through the API to reduce manual editing.

Can I batch generate alignments from polylines for a subdivision design?

Yes, you can batch generate alignments from polylines or explicit parameters. This enables you to validate station data and design speeds across site-wide corridor projects efficiently.

Do I need a specific environment to query alignment superelevation data?

Yes, querying alignment superelevation requires a .NET environment with Civil 3D API access and a loaded document to perform the programmatic alignment operations.

What is the best way to inspect and export alignment data for reports?

The best way to inspect and export alignment data for reports is to query the alignment data programmatically across your project, accessing station data and superelevation details for extraction.

Can I modify existing alignments and inspect superelevation programmatically?

Yes, you can modify existing alignments and inspect superelevation programmatically. This approach minimizes error-prone manual edits and enables repeatable Civil 3D design workflows.