Log a message on a contact's timeline

curl --request POST \
  --url https://api.smartlyq.com/v1/contacts/{id}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "body_text": "<string>",
  "direction": "out",
  "channel": "<string>",
  "subject": "<string>"
}
'

import requests

url = "https://api.smartlyq.com/v1/contacts/{id}/messages"

payload = {
    "body_text": "<string>",
    "direction": "out",
    "channel": "<string>",
    "subject": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    body_text: '<string>',
    direction: 'out',
    channel: '<string>',
    subject: '<string>'
  })
};

fetch('https://api.smartlyq.com/v1/contacts/{id}/messages', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.smartlyq.com/v1/contacts/{id}/messages",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'body_text' => '<string>',
    'direction' => 'out',
    'channel' => '<string>',
    'subject' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.smartlyq.com/v1/contacts/{id}/messages"

	payload := strings.NewReader("{\n  \"body_text\": \"<string>\",\n  \"direction\": \"out\",\n  \"channel\": \"<string>\",\n  \"subject\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.smartlyq.com/v1/contacts/{id}/messages")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"body_text\": \"<string>\",\n  \"direction\": \"out\",\n  \"channel\": \"<string>\",\n  \"subject\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.smartlyq.com/v1/contacts/{id}/messages")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"body_text\": \"<string>\",\n  \"direction\": \"out\",\n  \"channel\": \"<string>\",\n  \"subject\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "id": 5523,
    "direction": "outbound",
    "channel": "email",
    "body_text": "Your invoice is attached."
  },
  "meta": {
    "request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
    "timestamp": "2026-07-26T09:41:22Z"
  }
}

{
  "success": false,
  "error": {
    "code": "RESOURCE_NOT_FOUND",
    "message": "Post not found.",
    "details": {}
  },
  "meta": {
    "request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
    "timestamp": "2026-07-26T09:41:22Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Missing required fields: content, platforms.",
    "details": {
      "fields": [
        "content",
        "platforms"
      ]
    }
  },
  "meta": {
    "request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
    "timestamp": "2026-07-26T09:41:22Z"
  }
}