curl "https://api.phrase.com/v2/projects/:project_id/keys/:key_id/comments" \
  -u USERNAME_OR_ACCESS_TOKEN \
  -X POST \
  -d '{"branch":"my-feature-branch", "message":"Some message...", "locale_ids": ["someId"]}' \
  -H 'Content-Type: application/json'

phrase comments create \
--project_id <project_id> \
--key_id <key_id> \
--data '{"branch":"my-feature-branch", "message": "Some message...", "locale_ids": ["someId"]}' \
--access_token <token>

import requests

url = "https://api.phrase.com/v2/projects/{project_id}/keys/{key_id}/comments"

payload = {
    "message": "Some message...",
    "branch": "my-feature-branch",
    "locale_ids": ["someId", "someOtherId"]
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    message: 'Some message...',
    branch: 'my-feature-branch',
    locale_ids: ['someId', 'someOtherId']
  })
};

fetch('https://api.phrase.com/v2/projects/{project_id}/keys/{key_id}/comments', 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.phrase.com/v2/projects/{project_id}/keys/{key_id}/comments",
  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([
    'message' => 'Some message...',
    'branch' => 'my-feature-branch',
    'locale_ids' => [
        'someId',
        'someOtherId'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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.phrase.com/v2/projects/{project_id}/keys/{key_id}/comments"

	payload := strings.NewReader("{\n  \"message\": \"Some message...\",\n  \"branch\": \"my-feature-branch\",\n  \"locale_ids\": [\n    \"someId\",\n    \"someOtherId\"\n  ]\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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.phrase.com/v2/projects/{project_id}/keys/{key_id}/comments")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"message\": \"Some message...\",\n  \"branch\": \"my-feature-branch\",\n  \"locale_ids\": [\n    \"someId\",\n    \"someOtherId\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.phrase.com/v2/projects/{project_id}/keys/{key_id}/comments")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"message\": \"Some message...\",\n  \"branch\": \"my-feature-branch\",\n  \"locale_ids\": [\n    \"someId\",\n    \"someOtherId\"\n  ]\n}"

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

{
  "id": "abcd1234cdef1234abcd1234cdef1234",
  "message": "Some message...",
  "has_replies": true,
  "user": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "joe.doe",
    "name": "Joe Doe"
  },
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z",
  "locales": [
    {
      "id": "abcd1234cdef1234abcd1234cdef1234",
      "name": "English",
      "code": "en-GB"
    }
  ]
}

{
  "message": "Validation Failed",
  "errors": [
    {
      "resource": "Resource",
      "field": "name",
      "message": "can't be blank"
    }
  ]
}