Overview
Todoist API gives you programmatic access to one of the most popular task management apps, letting you create, read, update, and delete tasks, projects, and labels. It uses OAuth2 for secure authorization so users can connect their own Todoist accounts. Great for building productivity integrations, automations, or personal dashboards.
Beginner Tip
Use the REST API (v2) rather than the older Sync API when starting out — it follows standard HTTP conventions and is much easier to learn. You can get a personal API token from Todoist Settings > Integrations > Developer to skip OAuth during development.
Available Data
Example Response
{
"status": "success",
"data": {
"result": "Data from Todoist",
"description": "Todo Lists",
"timestamp": "2025-01-15T10:00:00Z"
}
} Field Reference
id Unique identifier for the task content The text body of the task project_id ID of the project this task belongs to due Due date information including date string and timezone priority Task priority from 1 (normal) to 4 (urgent) is_completed Whether the task has been marked as complete Implementation Example
const url = "https://developer.todoist.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"Authorization": "Bearer YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
Related Tags
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