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Message reaction added

Webhook

A reaction on a chat message changed.

Event name: chat:message:reaction

Delivered when the set of reactions on a message changes (a reaction is added or removed) in a chat where the app is a participant. The payload is a snapshot of every reaction currently on the message — see the schema below — not a single "reaction added" event. Rapid changes are debounced (~10 seconds) per message and coalesced into one delivery.

If you subscribed with a codes filter, the webhook only fires when the message carries at least one matching reaction, but the payload still lists every reaction on the message. Inspect reactions[].code in your handler to isolate the codes you care about.

Request​

Responses​

Return a 200 status to indicate that the data was received successfully