# Use hooks

Detailed API reference for each session hook in the GitHub Copilot SDK.

* [Hooks overview](./hooks-overview.md): quick start, common patterns, and hook invocation context
* [Pre-tool use](./pre-tool-use.md): approve, deny, or modify tool calls
* [Post-tool use](./post-tool-use.md): transform tool results
* [User prompt submitted](./user-prompt-submitted.md): modify or filter user messages
* [Session lifecycle](./session-lifecycle.md): session start and end
* [Error handling](./error-handling.md): custom error handling