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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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6 pages for postcompact.

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Intercept and control agent behavior with hooks Claude Code CLI · in the page agent-sdk/hooks …| | `PostCompact` | No | Yes | Conversation compaction completes… Agent SDK reference - TypeScript Claude Code CLI · in the page agent-sdk/typescript …hook events, such as `Notification`, `SessionEnd`, `PreCompact`, and `PostCompact`, never produce an `SDKHookStartedMessage`, even with this option. For those events, Claude Code still emits an `SDKHo… CLI reference Claude Code CLI · in the page cli-reference …hook events, such as `Notification`, `SessionEnd`, `PreCompact`, and `PostCompact`, never produce a `hook_started` event, even with this flag. For those events, Claude Code still emits `hook_progress`… Hooks reference Claude Code CLI · in the page hooks …eted), and Stop or StopFailure, followed by TeammateIdle, PreCompact, PostCompact, and SessionEnd, with Elicitation and ElicitationResult nested inside MCP tool execution, PermissionDenied as a side b… Automate actions with hooks Claude Code CLI · in the page hooks-guide …| | `PostCompact` | After context compaction completes… Plugins reference Claude Code CLI · in the page plugins-reference …| | `PostCompact` | After context compaction completes…