Hooks Setup

Use this skill when the user wants to inspect, create, update, debug, or explain Memoh hooks.

Files

• User hooks live at /data/.memoh/hooks.json.
• Detailed schema, events, payloads, and examples live in references/reference.md.

Read references/reference.md before adding anything beyond an empty config or a simple logging hook.

Empty Config

If /data/.memoh/hooks.json is missing, create:

{
  "version": 1,
  "enabled": true,
  "hooks": []
}

Minimal Workflow

1. Read /data/.memoh/hooks.json.
2. Preserve existing hooks unless the user asks to replace them.
3. Choose the narrowest event and matcher.
4. Prefer logging hooks with on_error: "ignore".
5. Use on_error: "block" only for guardrail hooks that should deny on failure.
6. Validate JSON syntax before finishing.

Common Pattern

{
  "version": 1,
  "enabled": true,
  "defaults": {
    "timeout": "10s",
    "on_error": "fail",
    "max_output_bytes": 65536,
    "trigger_nested_hooks": false
  },
  "env": {},
  "hooks": [
    {
      "name": "log workspace commands",
      "event": "AfterWorkspaceCommand",
      "enabled": true,
      "priority": 10,
      "matcher": ".*",
      "actions": [
        {
          "type": "command",
          "command": "mkdir -p .memoh && cat >> .memoh/hooks.log",
          "on_error": "ignore"
        }
      ]
    }
  ]
}

Action Output

Command and tool actions may return:

{
  "decision": "allow",
  "reason": "optional explanation",
  "append_context": "optional context"
}

Allowed decisions are allow, deny, ask_approval, and append_context.

For full examples and the complete event catalog, read references/reference.md.