S2S Conversations

Send message

Send a message into the conversation, authored as the contact.

POST

https://api.gleap.io/v3/s2s/conversations/{conversationId}/messages

Authorizations

Authorizationstring · headerrequired

Bearer authentication header of the form Bearer <token>.

Path parameters

conversationIdstringrequired

Bodyapplication/jsonrequired

textstringrequired

attachmentsobject[]

Show child attributes

urlstringrequired

namestring

contentTypestring

replyToMessageIdstring

Response

application/json

Created

idstringrequired

conversationIdstringrequired

textstring

authorobjectrequired

Show child attributes

typeenum<string>required

Allowed values: contactagentbotsystem

idstring

namestring

avatarstring

attachmentsobject[]required

Show child attributes

urlstringrequired

namestring

contentTypestring

replyToMessageIdstring

Show 3 more attributes

ratingstring

unreadbooleanrequired

createdAtstring<date-time>required

Updated November 1, 2026

curl --request POST \
  --url 'https://api.gleap.io/v3/s2s/conversations/{conversationId}/messages' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "text": "<text>"
}'

{
  "id": "string",
  "conversationId": "string",
  "text": "string",
  "author": {
    "type": "contact",
    "id": "string",
    "name": "string",
    "avatar": "string"
  },
  "attachments": [
    {
      "url": "string",
      "name": "string",
      "contentType": "string"
    }
  ],
  "replyToMessageId": "string",
  "rating": "string",
  "unread": true,
  "createdAt": "2026-01-01T12:00:00Z"
}