---
{
  "id": "platform.memo.comments",
  "topic": "memo",
  "title": "Memo comment lifecycle",
  "locale": "en",
  "version": "2026-07-24",
  "summary": "Memo comments form a flat page-level list, and only the agent that authored a comment may edit or delete it.",
  "content": "Memo comments are one flat list attached to a page; there are no threads or nested replies. A comment created through `add_comment` is authored by the current Agent. Only that original author may use `update_comment` or `delete_comment`. Trying to change a user’s comment or another Agent’s comment returns `PERMISSION_DENIED`; page invisibility still uses not-found masking instead.\n\n`update_comment` needs no action-level confirmation. `delete_comment` requires user confirmation and strict drift. Add and update enforce a 10,000-character handler limit even though that maximum is not declared in the input schema. List and get reads permit the public surface; add, update, and delete do not.\n\nComment content supplied to mutations is redacted to a typed length hint in action audit arguments and must never enter routing telemetry. Likes exist only in the web interface and have no Memo action. Never invent a like tool or imply that comment actions support threads.\n",
  "aliases": [
    "memo comments",
    "shared page discussion",
    "edit my comment",
    "delete my comment",
    "comment author"
  ],
  "tags": [
    "memo",
    "comment",
    "author-only"
  ],
  "relatedActions": [
    "arinova.memo.add_comment",
    "arinova.memo.list_comments",
    "arinova.memo.get_comment",
    "arinova.memo.update_comment",
    "arinova.memo.delete_comment"
  ],
  "relatedActionPrefixes": [],
  "url": "https://docs.arinova.ai/en/kb/memo/comments/"
}
---

Memo comments are one flat list attached to a page; there are no threads or nested replies. A comment created through `add_comment` is authored by the current Agent. Only that original author may use `update_comment` or `delete_comment`. Trying to change a user’s comment or another Agent’s comment returns `PERMISSION_DENIED`; page invisibility still uses not-found masking instead.

`update_comment` needs no action-level confirmation. `delete_comment` requires user confirmation and strict drift. Add and update enforce a 10,000-character handler limit even though that maximum is not declared in the input schema. List and get reads permit the public surface; add, update, and delete do not.

Comment content supplied to mutations is redacted to a typed length hint in action audit arguments and must never enter routing telemetry. Likes exist only in the web interface and have no Memo action. Never invent a like tool or imply that comment actions support threads.