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React to LinkedIn Message

Add an emoji reaction to a specific LinkedIn message, supported on LinkedIn and WhatsApp. Pass any emoji character such as a thumbs up, heart, laugh, or party popper along with the message_id. It fails if the message_id is invalid or the message has been deleted. Use it to acknowledge a message lightly when a full reply is not needed.

react_to_messagePOST/api/v1/inbox/messages/{message_id}/reactions
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crispy — bash

Example prompt: React with a thumbs up to message m_1042 in my conversation with Jane

{
  "message_id": "m_1042",
  "reaction": "\ud83d\udc4d",
  "reacted": true
}
Permission scope
core
Access
Write
Category
Messaging

What you can build

Acknowledge a message instantly without composing a written reply
Add warmth to a conversation with a quick thumbs up or heart
Confirm you saw an update while keeping the thread tidy
React to keep momentum in a chat when a full response can wait

Parameters

Inputs accepted by react_to_message.

NameTypeDescription
message_idstringID of the message to react to
reactionstringEmoji to react with (e.g. '👍', '❤️', '😂', '🎉')

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