API wrapper for Google Reminder

This is a work in progress to create an API wrapper for handling Google Reminders via code. Due to missing official documentation of the API, this should be considered unstable and not deployed to any production systems.

The current commands are implemented

• get
• list
• create
• delete

Not implemented commands

• update

Installing

Install the package with requirements by running

python3 setup.py install

Note that this package requires Python 3.

Usage

Following the instructions below on how to acquire the API session credentials and add them to your environment variables.

SID='xxxxxxxxxxxxxxxxx' HSID='xxxxxxxxxxxxxxxxx' SSID='xxxxxxxxxxxxxxxxx' APISID='xxxxxxxxxxxxxxxxx' SAPISID='xxxxxxxxxxxxxxxxx' authorization='xxxxxxxxxxxxxxxxx' key='xxxxxxxxxxxxxxxxx' python

from google_reminder_api_wrapper import ReminderApi

api = ReminderApi()
reminders = api.list()
print(reminders)

new_reminder = api.create('Test reminder', '2019-01-10 15:00')
reminders = api.list()
print(reminders)

api.delete(new_reminder)
reminders = api.list()
print(reminders)

Underlying Google Reminder API

Authorization

Currently, the Google session is still based on fixed cookies and authorization keys in the HTTP header.

SID = "xxxxxxxxxxxxxxxxx"
HSID = "xxxxxxxxxxxxxxxxx"
SSID = "xxxxxxxxxxxxxxxxx"
APISID = "xxxxxxxxxxxxxxxxx"
SAPISID = "xxxxxxxxxxxxxxxxx"
authorization = "xxxxxxxxxxxxxxxxx"
key = "xxxxxxxxxxxxxxxxx"

Note: The credential keys need to be set as environment variables for the requests to work. This is a work in progress and will in the future be integrated with the Google sessions API.

Finding Credentials

Credentials can be found by doing the following

1. Go to Google Calendar, https://calendar.google.com and make sure the "Reminder" calendar is marked.
2. Open the "Network" tab of the Chrome Developer Tool and search for reminders / list
3. In the "Header" sub-tab, find the required headers in the "Request Header"

Request Structure

The following is the main structure of the request sent to the Reminders API https://reminders-pa.clients6.google.com/v1internalOP/reminders/<COMMAND>.

where COMMAND is one of the following

• get
• list
• update
• create
• delete

Header

'x-origin': 'https://calendar.google.com',
'content-type': 'application/json',
'authorization': '<SESSION AUTHORIZATION>,'
'key': '<SESSION KEY>,'
'cookie': '<SESSION COOKIES>'

The Google Calendar is using this API with application/json+protobuf in the data payload, but due to readability problems this wrapper has reverse-engineered parts of the schema to normal JSON field names.

Backstory

Due to popular demand as seen in the following Google Issue Tracker thread, https://issuetracker.google.com/issues/36760283, I decided to give it a try. The wrapper is based on the following comment, https://issuetracker.google.com/issues/36760283#comment193.

The is based on the following comment, https://issuetracker.google.com/issues/36760283#comment193,

There is an undocumented API, which is used for example by Google Calendar. Maybe someone with the skills and time can write a user friendly wrapper or service for it ;-)
https://reminders-pa.clients6.google.com/v1internalOP/reminders/list?key=XXX

Commands are: list, get, create, update, delete

Some more details for "list" in Japanese: https://qiita.com/futa/items/c7a04c7b0be35508a626