---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_XOAUTH2_BEARER
Section: 3
Source: libcurl
See-also:
  - CURLOPT_MAIL_AUTH (3)
  - CURLOPT_USERNAME (3)
Protocol:
  - HTTP
  - IMAP
  - LDAP
  - POP3
  - SMTP
---

# NAME

CURLOPT_XOAUTH2_BEARER - OAuth 2.0 access token

# SYNOPSIS

~~~c
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_XOAUTH2_BEARER, char *token);
~~~

# DESCRIPTION

Pass a char pointer as parameter, which should point to the null-terminated
OAuth 2.0 Bearer Access Token for use with HTTP, IMAP, LDAP, POP3 and SMTP
servers that support the OAuth 2.0 Authorization Framework.

Note: For IMAP, LDAP, POP3 and SMTP, the username used to generate the Bearer
Token should be supplied via the CURLOPT_USERNAME(3) option.

The application does not have to keep the string around after setting this
option.

# DEFAULT

NULL

# EXAMPLE

~~~c
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "pop3://example.com/");
    curl_easy_setopt(curl, CURLOPT_XOAUTH2_BEARER, "1ab9cb22ba269a7");
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}
~~~

# AVAILABILITY

Added in 7.33.0. Support for OpenLDAP added in 7.82.0.

# RETURN VALUE

Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.