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POST
/
:projectId
/
api
/
v7
/
entities
/
:entityId
/
reactions
Add Entity Reaction
curl --request POST \
  --url https://api.replyke.com/api/v6/:projectId/api/v7/entities/:entityId/reactions \
  --header 'Content-Type: application/json' \
  --data '
{
  "reactionType": "<string>",
  "userId": "<string>"
}
'
Adds a reaction of the specified type to an entity. If the user already has a reaction on this entity, it is replaced with the new type. The entity’s reactionCounts map is updated accordingly. Authentication required.

​
Path Parameters

​
entityId
string
required
The UUID of the entity to react to.

​
Body Parameters

​
reactionType
string
required
The type of reaction to add. One of: upvote, downvote, like, love, wow, sad, angry, funny.
​
userId
string
Override which user the reaction is attributed to. Service or master key only. Useful for backfilling reactions from an external system.

​
Response

Returns the updated Entity object with the new reactionCounts map.
The entity owner receives an in-app notification when someone reacts to their entity. Milestone notifications are also sent at reaction count thresholds (e.g., 10, 50, 100 reactions).

​
Error Responses

{ "error": "Missing user ID", "code": "entity/missing-user-id" }
Returned when no user is authenticated and no userId override is provided.
{ "error": "Entity not found.", "code": "entity/not-found" }