mempalace-hooks

name	mempalace-hooks
description	Hook scripts for auto-capturing agent sessions in mempalace

Mempalace uses Claude Code hooks (via .mcp.json and hooks.json) to automatically capture observations during agent sessions. The hooks are JavaScript files in plugin/scripts/.

Hook events

Event	Script	When it fires
SessionStart	session-start.mjs	Agent session begins
UserPromptSubmit	prompt-submit.mjs	User sends a message
PreToolUse	pre-tool-use.mjs	Before tool execution
PostToolUse	post-tool-use.mjs	After tool execution
PostToolUseFailure	post-tool-failure.mjs	Tool error
PreCompact	pre-compact.mjs	Before context compaction
SubagentStart	subagent-start.mjs	Sub-agent spawns
SubagentStop	subagent-stop.mjs	Sub-agent finishes
Notification	notification.mjs	Agent notification
TaskCompleted	task-completed.mjs	Task marked done
Stop	stop.mjs	Agent stops
SessionEnd	session-end.mjs	Agent session ends

Hook config (Claude Code)

In .claude/settings.local.json or .claude/settings.json:

{
  "hooks": {
    "SessionStart": [{
      "hooks": [{"type": "command", "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/session-start.mjs\""}]
    }],
    "PostToolUse": [{
      "hooks": [{"type": "command", "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/post-tool-use.mjs\""}]
    }],
    "Stop": [{
      "hooks": [{"type": "command", "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/stop.mjs\""}]
    }]
  }
}

Also supports Codex (.codex/hooks.json) and Copilot (.github/copilot/hooks.json).