curl --request POST \
  --url https://agent-api.bigmodel.cn/api/agent/managed/v1/files \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --header 'zai-beta: <zai-beta>' \
  --header 'zai-version: <zai-version>' \
  --form file=@example-file

import requests

url = "https://agent-api.bigmodel.cn/api/agent/managed/v1/files"

files = { "file": ("example-file", open("example-file", "rb")) }
headers = {
    "zai-version": "<zai-version>",
    "zai-beta": "<zai-beta>",
    "Authorization": "Bearer <token>"
}

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

print(response.text)

const form = new FormData();
form.append('file', '<string>');

const options = {
  method: 'POST',
  headers: {
    'zai-version': '<zai-version>',
    'zai-beta': '<zai-beta>',
    Authorization: 'Bearer <token>'
  }
};

options.body = form;

fetch('https://agent-api.bigmodel.cn/api/agent/managed/v1/files', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

HttpResponse<String> response = Unirest.post("https://agent-api.bigmodel.cn/api/agent/managed/v1/files")
  .header("zai-version", "<zai-version>")
  .header("zai-beta", "<zai-beta>")
  .header("Authorization", "Bearer <token>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
  .asString();

package main

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

func main() {

	url := "https://agent-api.bigmodel.cn/api/agent/managed/v1/files"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")

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

	req.Header.Add("zai-version", "<zai-version>")
	req.Header.Add("zai-beta", "<zai-beta>")
	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://agent-api.bigmodel.cn/api/agent/managed/v1/files",
  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<string>\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: multipart/form-data",
    "zai-beta: <zai-beta>",
    "zai-version: <zai-version>"
  ],
]);

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

curl_close($curl);

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

{
  "type": "file",
  "id": "file_01911111-1111-7111-8111-111111111111",
  "size_bytes": 1024,
  "created_at": "2026-10-15T08:00:00.000Z",
  "filename": "report.txt",
  "mime_type": "text/plain",
  "downloadable": false,
  "expires_at": null
}

{
  "type": "error",
  "error": {
    "type": "invalid_request_error",
    "message": "<string>",
    "details": {}
  },
  "request_id": "req_01J..."
}