Use Copilot SDK

Explore the capabilities you can add to your Copilot SDK application.

Working with hooks

Use hooks to customize the behavior of your Copilot SDK sessions.

Define specialized agents with scoped tools and prompts, and let Copilot orchestrate them as sub-agents within a single session.

Send images to Copilot SDK sessions as file or blob attachments.

Integrate MCP servers with the Copilot SDK to extend your application's capabilities with external tools.

Pause, resume, and manage Copilot SDK sessions across restarts and deployments.

Use skills to extend Copilot's capabilities with reusable prompt modules.

Send messages to an active Copilot SDK session to redirect it mid-turn or queue follow-up tasks.

Reference session events emitted by the Copilot SDK and the data fields each event contains.