curl "https://api.phrase.com/v2/projects/:project_id/uploads" \
  -u USERNAME_OR_ACCESS_TOKEN \
  -X POST \
  -F branch=my-feature-branch \
  -F file=@/path/to/my/file.json \
  -F file_format=json \
  -F locale_id=abcd1234cdef1234abcd1234cdef1234 \
  -F tags=awesome-feature,needs-proofreading \
  -F locale_mapping[en]=2 \
  -F format_options[foo]=bar

phrase uploads create \
--project_id <project_id> \
--branch my-feature-branch \
--file /path/to/my/file.json \
--file_format json \
--locale_id abcd1234cdef1234abcd1234cdef1234 \
--tags awesome-feature,needs-proofreading \
--locale_mapping '{"en": "2"}' \
--format_options '{"foo": "bar"}' \
--access_token <token>

import requests

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

files = { "file": ("example-file", open("example-file", "rb")) }
payload = {
    "file_format": "json",
    "locale_id": "abcd1234cdef1234abcd1234cdef1234",
    "branch": "my-feature-branch",
    "tags": "awesome-feature,needs-proofreading",
    "update_translations": "true",
    "update_custom_metadata": "true",
    "update_translation_keys": "true",
    "update_translations_on_source_match": "true",
    "source_locale_id": "abcd1234cdef1234abcd1234cdef1234",
    "update_descriptions": "true",
    "convert_emoji": "true",
    "skip_upload_tags": "true",
    "skip_unverification": "true",
    "file_encoding": "UTF-8",
    "locale_mapping": "{\"en\": \"2\"}",
    "format_options": "{\"foo\": \"bar\"}",
    "autotranslate": "true",
    "verify_mentioned_translations": "true",
    "mark_reviewed": "true",
    "tag_only_affected_keys": "true",
    "translation_key_prefix": "prefix_",
    "skip_automated_job_creation": "false"
}
headers = {"Authorization": "<api-key>"}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('file', '/path/to/my/file.json');
form.append('file_format', 'json');
form.append('locale_id', 'abcd1234cdef1234abcd1234cdef1234');
form.append('branch', 'my-feature-branch');
form.append('tags', 'awesome-feature,needs-proofreading');
form.append('update_translations', 'true');
form.append('update_custom_metadata', 'true');
form.append('update_translation_keys', 'true');
form.append('update_translations_on_source_match', 'true');
form.append('source_locale_id', 'abcd1234cdef1234abcd1234cdef1234');
form.append('update_descriptions', 'true');
form.append('convert_emoji', 'true');
form.append('skip_upload_tags', 'true');
form.append('skip_unverification', 'true');
form.append('file_encoding', 'UTF-8');
form.append('locale_mapping', '{"en": "2"}');
form.append('format_options', '{"foo": "bar"}');
form.append('autotranslate', 'true');
form.append('verify_mentioned_translations', 'true');
form.append('mark_reviewed', 'true');
form.append('tag_only_affected_keys', 'true');
form.append('translation_key_prefix', 'prefix_');
form.append('skip_automated_job_creation', 'false');

const options = {method: 'POST', headers: {Authorization: '<api-key>'}};

options.body = form;

fetch('https://api.phrase.com/v2/projects/{project_id}/uploads', 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}/uploads",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n/path/to/my/file.json\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"branch\"\r\n\r\nmy-feature-branch\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\nawesome-feature,needs-proofreading\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_custom_metadata\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translation_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations_on_source_match\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"source_locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_descriptions\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"convert_emoji\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_upload_tags\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_unverification\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_encoding\"\r\n\r\nUTF-8\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_mapping\"\r\n\r\n{\"en\": \"2\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"format_options\"\r\n\r\n{\"foo\": \"bar\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"autotranslate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"verify_mentioned_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"mark_reviewed\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tag_only_affected_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"translation_key_prefix\"\r\n\r\nprefix_\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_automated_job_creation\"\r\n\r\nfalse\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: multipart/form-data; boundary=---011000010111000001101001"
  ],
]);

$response = curl_exec($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}/uploads"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n/path/to/my/file.json\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"branch\"\r\n\r\nmy-feature-branch\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\nawesome-feature,needs-proofreading\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_custom_metadata\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translation_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations_on_source_match\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"source_locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_descriptions\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"convert_emoji\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_upload_tags\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_unverification\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_encoding\"\r\n\r\nUTF-8\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_mapping\"\r\n\r\n{\"en\": \"2\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"format_options\"\r\n\r\n{\"foo\": \"bar\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"autotranslate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"verify_mentioned_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"mark_reviewed\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tag_only_affected_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"translation_key_prefix\"\r\n\r\nprefix_\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_automated_job_creation\"\r\n\r\nfalse\r\n-----011000010111000001101001--")

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

	req.Header.Add("Authorization", "<api-key>")
	req.Header.Add("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")

	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}/uploads")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n/path/to/my/file.json\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"branch\"\r\n\r\nmy-feature-branch\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\nawesome-feature,needs-proofreading\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_custom_metadata\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translation_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations_on_source_match\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"source_locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_descriptions\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"convert_emoji\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_upload_tags\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_unverification\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_encoding\"\r\n\r\nUTF-8\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_mapping\"\r\n\r\n{\"en\": \"2\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"format_options\"\r\n\r\n{\"foo\": \"bar\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"autotranslate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"verify_mentioned_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"mark_reviewed\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tag_only_affected_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"translation_key_prefix\"\r\n\r\nprefix_\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_automated_job_creation\"\r\n\r\nfalse\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

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

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"] = 'multipart/form-data; boundary=---011000010111000001101001'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n/path/to/my/file.json\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"branch\"\r\n\r\nmy-feature-branch\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\nawesome-feature,needs-proofreading\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_custom_metadata\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translation_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_translations_on_source_match\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"source_locale_id\"\r\n\r\nabcd1234cdef1234abcd1234cdef1234\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"update_descriptions\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"convert_emoji\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_upload_tags\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_unverification\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_encoding\"\r\n\r\nUTF-8\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"locale_mapping\"\r\n\r\n{\"en\": \"2\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"format_options\"\r\n\r\n{\"foo\": \"bar\"}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"autotranslate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"verify_mentioned_translations\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"mark_reviewed\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tag_only_affected_keys\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"translation_key_prefix\"\r\n\r\nprefix_\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"skip_automated_job_creation\"\r\n\r\nfalse\r\n-----011000010111000001101001--"

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

{
  "id": "abcd1234cdef1234abcd1234cdef1234",
  "filename": "example.json",
  "format": "json",
  "state": "success",
  "tag": "tag",
  "summary": {
    "locales_created": 2,
    "translation_keys_created": 162,
    "translation_keys_updated": 10,
    "translation_keys_unmentioned": 0,
    "translations_created": 291,
    "translations_updated": 3,
    "tags_created": 2,
    "translation_keys_ignored": 0
  },
  "user": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "johndoe",
    "name": "John Doe",
    "gravatar_uid": "205e460b479e2e5b48aec07710c08d50"
  },
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z"
}

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