Tools: Solved: Syncing Todoist Tasks With Microsoft To Do Via API 2026

Posted on Jan 23

• Originally published at wp.me

TL;DR: This guide provides a Python script to automatically sync tasks from Todoist to Microsoft To Do, addressing the inefficiency of manual task duplication across platforms. It leverages the Todoist and Microsoft Graph APIs to create a unified task management experience for SysAdmins, Developers, and DevOps Engineers.

In today’s fast-paced digital environment, managing tasks across various platforms is a common challenge for SysAdmins, Developers, and DevOps Engineers. While tools like Todoist excel in personal productivity and rapid task capture, Microsoft To Do often integrates seamlessly into organizational ecosystems, especially for those heavily invested in Microsoft 365. The friction of manually duplicating tasks, switching contexts, and the risk of overlooking critical items due to platform segregation can significantly impede efficiency.

Imagine a world where your quick “note to self” in Todoist automatically appears in your work-focused Microsoft To Do list, without a single manual copy-paste. This tutorial aims to bring that vision to life. We will walk you through the process of building a simple Python script to automatically sync your Todoist tasks with Microsoft To Do using their respective APIs, providing a unified task management experience and liberating you from tedious manual synchronization.

Before we dive into the integration, ensure you have the following:

Log in to your Todoist account. Navigate to “Settings” > “Integrations” > “Developer”. You will find your “API token” there. Copy this token; it’s essential for authenticating your requests to the Todoist API.

To interact with Microsoft To Do, you’ll use the Microsoft Graph API. This requires registering an application in Azure Active Directory:

Note on Refresh Token: For non-interactive scripts, you need a refresh token. This is typically obtained by performing an initial OAuth2 authorization flow (e.g., using a tool like Postman, or a small web application to generate the initial token). Once you have a refresh token, you can use it to get new access tokens without user interaction. This tutorial assumes you have already obtained and will store your refresh token.

Create a project directory and set up your Python environment.

Create a configuration file named config.env to store your API keys and secrets securely:

Source: Dev.to