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The Add or Remove a Reaction block lives in the Messages palette category. Add, remove, or clear emoji reactions on a message.

What it does

Adds, removes, or clears emoji reactions on a message. Use Clear all reactions to strip every reaction from the target message, or Clear emoji reactions to remove all users’ reactions for one emoji.

Configuration

Open the block in the builder sidebar to configure these fields.

action

Type: string. Required. Accepted values: add, remove, clear_all, clear_emoji.
  • add — Add the bot’s reaction.
  • remove — Remove all users’ reactions for the chosen emoji.
  • clear_all — Remove every reaction on the message.
  • clear_emoji — Remove all users’ reactions for the chosen emoji.

emoji

Type: string. Required except when action is clear_all. Unicode emoji or custom emoji syntax.

message_id

Type: block-reference. Required. Target message.

Important

  • Clearing reactions requires Manage Messages in the channel.

See also

  • Messages — Browse all blocks in the Messages category.
Last modified on August 17, 2026