WhatsApp Business

Send a message

v92 (beta): a real send. Within 24 hours of the customer's last message send text; otherwise only an approved template (template + variables). Marketing templates only to people who opted in. Response: message, chat. A request that breaks the rules returns 400 with the reason.

POST/api/v1/whatsapp/chats/{id}/messages

Authorization

Authorizationheaderrequired

Bearer token: API key (sk_…), OAuth access token (mcp_…) or mobile session (xk_…).

Module: CustomersScope: crm.write

Path parameters

idintegerrequired

Conversation id.

Body application/json

textstringoptional

Message (max 4,096 characters; window open).

templatestringoptional

Approved template name.

variablesarrayoptional

Values for the template's {{1}}, {{2}} …, in order.

Errors

HTTP	error	Meaning
`400`	`invalid`	Missing or invalid field (`message` explains).
`403`	`module`	The module is off in the licence or for the user.
`404`	`not_found`	Record not found.

Request

curl -X POST https://ornek.solk.app/api/v1/whatsapp/chats/{id}/messages \
  -H "Authorization: Bearer $SOLK_API_KEY"

const res = await fetch("https://ornek.solk.app/api/v1/whatsapp/chats/{id}/messages", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.SOLK_API_KEY}`,
  },
});
const data = await res.json();

import os, requests

r = requests.post(
    "https://ornek.solk.app/api/v1/whatsapp/chats/{id}/messages",
    headers={"Authorization": f"Bearer {os.environ['SOLK_API_KEY']}"},
)
print(r.json())

Response