WasupInstall

Summary

Adds or removes an emoji reaction on a specific WhatsApp message through the Wasup API, using either a chosen instance or an automatically selected connected one.

Inputs

• Auto-Select Instance — When on, Wasup picks a connected instance and the node POSTs to /api/react instead of the instance-specific /api/instances/{id}/react. Default off.
• From Phone — Only shown with Auto-Select. Optional connected number to react from; sent as from_phone. Empty values are omitted.
• Instance (required) — Instance to act on, chosen from a searchable list or entered by ID. Hidden when Auto-Select is on.
• To (required) — Chat the target message is in: phone number with country code (no + or spaces) or a chat id. With Auto-Select it is also sent as to_phone.
• Message ID (required) — ID of the message to react to, from a send response (message_id) or an inbound webhook.
• Emoji — Emoji to react with (default 👍). An empty string removes the reaction; because empty values are stripped from the request body, the emoji key is omitted in that case.
• From Me — Turn on if the target message was sent by the connected account itself. Default off.

Output shape

One output item per input item, containing the JSON response from the Wasup react endpoint.

The exact response fields are not defined in the node; they come from the Wasup API. With 'Continue On Fail' enabled, a failed item yields {error: message} instead of stopping the workflow.

Examples

Example 1: Acknowledge an incoming customer message with a thumbs-up.

Instance: pick from list; To: {{$json.from}}; Message ID: {{$json.message_id}} from the webhook; Emoji: 👍; From Me: off.

Example 2: React to a message the bot just sent, without picking an instance.

Auto-Select on; From Phone: 60123456789; To: recipient number; Message ID: message_id from the send response; Emoji: ✅; From Me: on.

Example 3: Remove a previously added reaction.

Instance chosen; To and Message ID set; Emoji: empty string.

Links

• n8n community nodes installation guide