.NET API

Last updated: July 30, 2026

Use this reference to locate supported Helium types and members by functional area. API pages provide signatures and contract details; conceptual explanations and implementation guidance remain in the main documentation.

Start here

• Application composition — Review the contracts used to register and compose Helium.
• Common contracts — Locate shared result, context, and framework contracts.

All topics

• Application composition
• Common contracts
• Identity
• Organizations
• Authorization
• Billing
• Entitlements
• Communications
• Lifecycle
• ASP.NET Core hosting
• Presentation
• Testing

Related documentation

• Reference
• Build with Helium
• Extend and customize