---
title: "tool si.act.annotate"
description: "an `Annotation` with the target *an entity* and the entity's id, from the web shell, the desktop shell, the agent or the API; in the side panel the same type travels inside the page's reading: the fact the person stated, a claim or a connection, by its id and kind (`UnitRef`)."
section: reference
address: /reference/tools/si-act-annotate
contract: 0476e35e6e275db5
---

# tool si.act.annotate

an `Annotation` with the target *an entity* and the entity's id, from the web shell, the desktop shell, the agent or the API; in the side panel the same type travels inside the page's reading: the fact the person stated, a claim or a connection, by its id and kind (`UnitRef`).

[figure: Over MCP, si.act.annotate takes Annotation and returns a card whose body is UnitRef.]

the fact the person stated, a claim or a connection, by its id and kind (`UnitRef`). The call needs the act grant at the user rung.



| | |
|---|---|
| input | [Annotation](/concepts/annotation) |
| result | a card whose body is [UnitRef](/concepts/unitref) |
| read-only | no |
| destructive | yes |
| card address | `ui://scale-intelligence/cards/UnitRef` |
| HTTP route | [`/v1/act/annotate`](/reference/act/annotate) |





| field | type | required | note |
|---|---|---|---|
| `target` | `one of the page \| an item \| a contact \| a region \| an entity` | yes | an entity when the annotation is made on an entity's page or by the agent, with the entity in subject |
| `subject` | `id` | no | the entity the annotation is about when the target is an entity; absent on a page, whose subject the capture supplies |
| `said_in` | `one of the capture panel \| the web shell \| the desktop shell \| the agent \| the API` | no | the face the person said it in; absent means the capture panel |
| `item_field` | `text` | no | the list field the item belongs to |
| `item_key` | `text` | no | the item's own id, or its index |
| `contact` | `text` | no | the contact's namespace and normalised value, joined by a bar |
| `region_selector` | `text` | no | a selector path to the picked element |
| `region_text` | `text` | no | the picked element's visible text |
| `kind` | `one of a tag \| a relation \| a note \| a rival \| a fit \| a membership \| a kind of thing` | yes | a rival marks the subject as competing with one of the tenant's brands; a fit states it fits a kind of buyer; a membership places it in a facet, a vertical, a segment or a community; a kind of thing says what the subject is |
| `register` | `text` | no | the place of the record the unit was found in (kinds of buyer, brands, offerings, facets, verticals, concepts, segments, communities, entities) |
| `value` | `text` | yes | the tag's name, the relation's kind of connection or the person's own words for it, the note, or the kind of entity |
| `entity` | `id` | no | the unit of the record it points at; absent for a thing the record does not hold yet |
| `entity_name` | `text` | no | the unit's name, or the name of a new thing |
| `entity_kind` | `text` | no | the unit's kind, or the kind of entity the person set for a new thing |
| `role` | `text` | no | for a relation: the role the page's subject takes |
| `stated_at` | `time` | yes |  |