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.