2. Exchange authorization code for refresh and access tokens

To exchange an authorization code for an access token, call the https://oauth2.googleapis.com/token endpoint and set the following parameters:

Fields	Value	Required
client_id	329011709740-sq6l548671df39l5bingat6kpd0rmuth.apps.googleusercontent.com	Yes
client_secret	xxx	Yes
code	4/0AWgavdeTEPxfXAPtbSUqv2OrbfRPywz7JUhCeZbDV4smVxBOgztU4TzFqNOwC0diUCCPog	Yes
grant_type	authorization_code	Yes
redirect_uri	http://localhost:5001/callback	Yes

POST https://oauth2.googleapis.com/token/

Query Parameters

Name	Type	Description
client_id*	String	329011709740-sq6l548671df39l5bingat6kpd0rmuth.apps.googleusercontent.com
client_secret*	String	xxx
code*	String	4/0AWgavdeTEPxfXAPtbSUqv2OrbfRPywz7JUhCeZbDV4smVxBOgztU4TzFqNOwC0diUCCPog
grant_type*	String	authorization_code
redirect_uri*	String	http://localhost:5001/callback

200: OK

{
  "access_token": "1/fFAGRNJru1FTz70BzhT3Zg",
  "expires_in": 3920,
  "token_type": "Bearer",
  "scope": "https://www.googleapis.com/auth/drive.metadata.readonly",
  "refresh_token": "1//xEoDL4iW3cxlI7yDbSRFYNG01kVKM2C-259HOF2aQbI"
}

NodeJs - Axios

var axios = require('axios');

var config = {
  method: 'post',
  url: 'https://oauth2.googleapis.com/token?redirect_uri=http://localhost:5001/appgregator/us-central1/googleads/callback&client_id=329011709740-sq6l548671df39l5bingat6kpd0rmuth.apps.googleusercontent.com&client_secret=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&grant_type=authorization_code&code=4/0AWgavdeTEPxfXAPtbSUqv2OrbfRPywz7JUhCeZbDV4smVxBOgztU4TzFqNOwC0diUCCPog',
  headers: { }
};

axios(config)
.then(function (response) {
  console.log(JSON.stringify(response.data));
})
.catch(function (error) {
  console.log(error);
});

cURL

curl --location --request POST 'https://oauth2.googleapis.com/token?redirect_uri=http://localhost:5001/appgregator/us-central1/googleads/callback&client_id=329011709740-sq6l548671df39l5bingat6kpd0rmuth.apps.googleusercontent.com&client_secret=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&grant_type=authorization_code&code=4/0AWgavdeTEPxfXAPtbSUqv2OrbfRPywz7JUhCeZbDV4smVxBOgztU4TzFqNOwC0diUCCPog'

PHP - cURL

<?php

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://oauth2.googleapis.com/token?redirect_uri=http://localhost:5001/appgregator/us-central1/googleads/callback&client_id=329011709740-sq6l548671df39l5bingat6kpd0rmuth.apps.googleusercontent.com&client_secret=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&grant_type=authorization_code&code=4/0AWgavdeTEPxfXAPtbSUqv2OrbfRPywz7JUhCeZbDV4smVxBOgztU4TzFqNOwC0diUCCPog',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'POST',
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;