CURLOPT_XOAUTH2_BEARER(3) Library Functions Manual CURLOPT_XOAUTH2_BEARER(3)
NAME
CURLOPT_XOAUTH2_BEARER - OAuth 2.0 access token
SYNOPSIS
#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-termi-
nated 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.
Using this option multiple times makes the last set string override the
previous ones. Set it to NULL to disable its use again.
DEFAULT
NULL
PROTOCOLS
This functionality affects http, imap, ldap, pop3 and smtp
EXAMPLE
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);
}
}
HISTORY
Support for OpenLDAP added in 7.82.0.
AVAILABILITY
Added in curl 7.33.0
RETURN VALUE
curl_easy_setopt(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred,
see libcurl-errors(3).
SEE ALSO
CURLOPT_MAIL_AUTH(3), CURLOPT_USERNAME(3)
libcurl 2026-07-12 CURLOPT_XOAUTH2_BEARER(3)
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