> For the complete documentation index, see [llms.txt](https://docs.api.intratool.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.api.intratool.de/introduction/resource-capabilities/reactions.md).

# Reactions

The Reactions capability identifies resources that accept emoji feedback through the [Reactions API](/api-reference/reactions.md). Each reaction belongs to one [User](/api-reference/users.md) and one resource instance.

Each user has at most one current reaction per resource. Submitting another value for the same user and resource updates the existing reaction, while deleting it removes that user's feedback without changing reactions from other users.

Clients can retrieve individual reactions and aggregated reaction summaries where the resource exposes them. Access to reaction operations follows the authorization and state rules of the affected resource; declaring the capability does not grant access by itself.