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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

  1. Obtain the Refresh Token
    Ensure that the initial OAuth flow requested offline access so that a refresh token is received.

  2. Exchange Refresh Token for an Access Token
    Make a POST request to Google's token endpoint.

  3. 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'

Further Resources