curl "https://api.phrase.com/v2/projects/:project_id/branches" \
  -u USERNAME_OR_ACCESS_TOKEN \
  -X POST \
  -d '{"name":"my-branch"}' \
  -H 'Content-Type: application/json'

phrase branches create \
--project_id <project_id> \
--data '{"name":"my-branch"}' \
--access_token <token>

import requests

url = "https://api.phrase.com/v2/projects/{project_id}/branches"

payload = {
    "name": "my-branch",
    "base": "parent-branch"
}
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({name: 'my-branch', base: 'parent-branch'})
};

fetch('https://api.phrase.com/v2/projects/{project_id}/branches', 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}/branches",
  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([
    'name' => 'my-branch',
    'base' => 'parent-branch'
  ]),
  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}/branches"

	payload := strings.NewReader("{\n  \"name\": \"my-branch\",\n  \"base\": \"parent-branch\"\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}/branches")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"my-branch\",\n  \"base\": \"parent-branch\"\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"name\": \"my-branch\",\n  \"base\": \"parent-branch\"\n}"

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

{
  "name": "new-branch",
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z",
  "merged_at": "2015-01-28T09:52:53Z",
  "merged_by": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "joe.doe",
    "name": "Joe Doe"
  },
  "created_by": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "joe.doe",
    "name": "Joe Doe"
  },
  "state": "success",
  "child_branches": [
    "feature_2",
    "feature_3"
  ]
}

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