The endpoint of the text message and the media message is the same. The body parameters for the media message are as follows:

POST rest/v1/messages/EXAMPLE-853a-448f-9f91-ef397588ff87 HTTP/1.1
Host: api.flow.ai
{
  "payload": {
    "type": "media",
    "mediaType": "image",
    "mimetype": "image/png",
    "title": "Example title",
    "url": "https://DOMAIN.com/random/880x400",
    "originator": {
      "name": "John Doe",
      "role": "external"
    }
  }
}

Media message parameters

Parameter	Description	Type
traceId	Optional unique number that is passed along to identify the message. Use this to verify message delivery.	integer
type	Indicates the type of message. Should be `media`	string
mediaType	Type of media, `image`, `file`, `audio`, or `video`	string
url	URL of media attachment	string
title	Optional title of location	string
mimeType	Optionally specify the mime-type of the uploaded file, supported media formats are channel specific	string
lang	Optional language code in ISO format (2 letters)	string
timezone	Optional UTF timezone offset in hours	integer
params	Optional parameters	object