Kapso APIInstall

Summary

Send an audio message to a WhatsApp recipient through the selected Kapso phone number, using a Meta media ID or a public URL. Optionally send the audio as a voice note and include reply context or callback data.

Inputs

• Phone Number Name or ID — Select a connected Kapso WhatsApp number or provide its ID.
• Recipient Phone (required) — Recipient number in Meta format: 8–15 digits, without a plus sign or spaces.
• Media Source — Choose a Meta media ID (default) or a public link.
• Media ID (required) — Required when Media Source is Media ID; use an ID returned by Upload Media or a Kapso Trigger media attachment.
• Public URL (required) — Required when Media Source is Public Link; provide an HTTP or HTTPS URL for the media file.
• Send As Voice Note — When enabled, sends the audio as a WhatsApp push-to-talk voice message. Defaults to false.
• Reply To Message ID — Optional WAMID of the message to reply to.
• Callback Data — Optional metadata, up to 512 characters, returned in message status webhooks and not shown to recipients.

Output shape

A single item containing the Kapso API response for the send request.

The response fields depend on the API response. The operation sends a WhatsApp audio message; the voice-note setting changes its audio presentation.

Examples

Example 1: Send an uploaded audio file

Select a connected phone number, enter the recipient’s digits-only phone number, choose Media ID, provide the uploaded media ID, and leave Send As Voice Note disabled.

Example 2: Send audio as a voice note

Select Public Link and provide an HTTP or HTTPS URL for the audio, then enable Send As Voice Note.

Links

• n8n community nodes installation guide