Features

These guides cover the capabilities you can add to your Copilot SDK application. Each guide includes examples in all supported languages (TypeScript, Python, Go, and .NET).

New to the SDK? Start with the Getting Started tutorial first, then come back here to add more capabilities.

Guides

Feature	Description
Hooks	Intercept and customize session behavior — control tool execution, transform results, handle errors
Custom Agents	Define specialized sub-agents with scoped tools and instructions
MCP Servers	Integrate Model Context Protocol servers for external tool access
Skills	Load reusable prompt modules from directories
Image Input	Send images to sessions as attachments
Streaming Events	Subscribe to real-time session events (40+ event types)
Steering & Queueing	Control message delivery — immediate steering vs. sequential queueing
Session Persistence	Resume sessions across restarts, manage session storage

Related

• Hooks Reference — detailed API reference for each hook type
• Integrations — use the SDK with other platforms (MAF, etc.)
• Troubleshooting — when things don't work as expected
• Compatibility — SDK vs CLI feature matrix