Hook events, all 31.

ConfigChangeWhen a configuration file changes during a session never mined ○ CwdChangedWhen the working directory changes, for example when Claude executes a cd command. Useful for reactive environment management with tools like direnv never mined ○ DirectoryAddedWhen a working directory is added mid-session via /add-dir or the SDK register_repo_root control request never mined ○ ElicitationWhen an MCP server requests user input during a tool call never mined ○ ElicitationResultAfter a user responds to an MCP elicitation, before the response is sent back to the server never mined ○ FileChangedWhen a watched file changes on disk. The matcher field specifies which filenames to watch never mined ○ InstructionsLoadedWhen a CLAUDE.md or .claude/rules/*.md file is loaded into context. Fires at session start and when files are lazily loaded during a session never mined ○ MessageDisplayWhile assistant message text is displayed never mined ○ NotificationWhen Claude Code sends a notification never mined ○ PermissionDeniedWhen auto mode denies a tool call, including denials without a classifier verdict. Use JSON hookSpecificOutput.retry: true to tell the model it may retry the denied tool call. Claude Code ignores retry when the classifier produced no verdict never mined ○ PermissionRequestWhen a tool call needs a permission decision never mined ○ PostCompactAfter context compaction completes never mined ○ PostToolBatchAfter a full batch of parallel tool calls resolves, before the next model call never mined ○ PostToolUseAfter a tool call succeeds never mined ○ PostToolUseFailureAfter a tool call fails never mined ○ PreCompactBefore context compaction never mined ○ PreToolUseBefore a tool call executes. Can block it never mined ○ SessionEndWhen a session terminates never mined ○ SessionStartWhen a session begins or resumes never mined ○ SetupWhen you start Claude Code with --init-only, or with --init or --maintenance in -p mode. For one-time preparation in CI or scripts never mined ○ StopWhen Claude finishes responding never mined ○ StopFailureWhen the turn ends due to an API error never mined ○ SubagentStartWhen a subagent is spawned never mined ○ SubagentStopWhen a subagent finishes never mined ○ TaskCompletedWhen a task is being marked as completed never mined ○ TaskCreatedWhen a task is being created via TaskCreate never mined ○ TeammateIdleWhen an [agent team](/docs/en/agent-teams) teammate is about to go idle never mined ○ UserPromptExpansionWhen a user-typed command expands into a prompt, before it reaches Claude. Can block the expansion never mined ○ UserPromptSubmitWhen you submit a prompt, before Claude processes it never mined ○ WorktreeCreateWhen a worktree is being created via --worktree, isolation: "worktree", or for a background session. Replaces default git behavior never mined ○ WorktreeRemoveWhen a worktree is being removed at session exit, when a subagent finishes, or when you delete a background session never mined ○