Using the Refresh Token for Google Calendar Events
This document explains how to use a refresh token from the Google OAuth flow to access and request events from the Google Calendar API.
Overview
Once you have obtained a refresh token via Google OAuth, you can request a new access token when needed. This access token is then used to call the Google Calendar API to retrieve events.
Steps
-
Obtain the Refresh Token
Ensure that the initial OAuth flow requested offline access so that a refresh token is received. -
Exchange Refresh Token for an Access Token
Make a POST request to Google's token endpoint. -
Access the Google Calendar API
Use the new access token to query calendar events.
Example Token Exchange Request
curl --request POST \
--url https://oauth2.googleapis.com/token \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data 'client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&refresh_token=YOUR_REFRESH_TOKEN&grant_type=refresh_token'