Thanks for your interest in developing apps with Todoist! In this guides section we'll provide an overview of the APIs we offer and cover some common topics for application development using our APIs.
If you are looking for reference documentation for our APIs please proceed to either the REST API Reference or Sync API Reference.
Our APIs
We offer two APIs for external developers, providing different models for sending and receiving data.
Rest API
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The Todoist REST API offers the simplest approach to read and write data on the Todoist web service.
For most common application requirements this is our recommended API for external developers and uses an approach that should be familiar for anyone with experience calling RESTful APIs.
We've provided a Getting Started tutorial section within our REST API documentation to introduce you to the API and some common flows you'll encounter when developing Todoist applications. If you are totally new to our APIs or even unfamiliar with Todoist this is a great place to start.
Sync API
The Todoist Sync API is used by our web and mobile applications and is recommended for clients that will maintain alocal representation of a user's full account data. It allows for incrementally sending and receiving account data by identifying positions in an account's state history using a sync token.
This API also contains additional endpoints for areas like account management and less common features that may not yet be implementedon the newer REST API.
Within the documentation for the Sync API you'll also find a Getting Started tutorial that will introduce you to using the Sync endpoint to send and receive data.
In order to make authorized calls to the Todoist REST or Sync APIs, your application must firstobtain an access token.
The following section describes the process for using the OAuth protocol to obtain an access token from the user.
OAuth
External applications can obtain a user authorized API token via the OAuth2protocol. Before getting started, developers need to create their applicationsin the App Management Console and configure a valid OAuthredirect URL. A registered Todoist application is assigned a unique Client IDand Client Secret which are needed for the OAuth2 flow.
This procedure is comprised of 3 steps.
Step 1: Authorization request
An example of the URL to the authorization endpoint:
Redirect users to the authorization URL at the endpointhttps://todoist.com/oauth/authorize, with the specified request parameters.
Required parameters
| Name | Description |
|---|---|
| client_id String | The unique Client ID of the Todoist application that you registered. |
| scope String | A comma separated list of permissions that you would like the users to grant to your application. See the below table for detail on the available scopes. |
| state String | A unique and unguessable string. It is used to protect you against cross-site request forgery attacks. |
Permission scopes
| Name | Description |
|---|---|
| task:add | Grants permission to add new tasks (the application cannot read or modify any existing data). |
| data:read | Grants read-only access to application data, including tasks, projects, labels, and filters. |
| data:read_write | Grants read and write access to application data, including tasks, projects, labels, and filters. This scope includes task:add and data:read scopes. |
| data:delete | Grants permission to delete application data, including tasks, labels, and filters. |
| project:delete | Grants permission to delete projects. |
Potential errors
| Error | Description |
|---|---|
| User Rejected Authorization Request | When the user denies your authorization request, Todoist will redirect the user to the configured redirect URI with the error parameter: http://example.com?error=access_denied. |
| Redirect URI Not Configured | This JSON error will be returned to the requester (your user's browser) if redirect URI is not configured in the App Management Console. |
| Invalid Application Status | When your application exceeds the maximum token limit or when your application is being suspended due to abuse, Todoist will redirect the user to the configured redirect URI with the error parameter: http://example.com?error=invalid_application_status. |
| Invalid Scope | When the scope parameter is invalid, Todoist will redirect the user to the configured redirect URI with error parameter: http://example.com?error=invalid_scope. |
Step 2: Redirection to your application site
When the user grants your authorization request, the user will be redirected tothe redirect URL configured for your application. The redirect requestwill come with two query parameters attached: code and state.
The code parameter contains the authorization code that you will use toexchange for an access token. The state parameter should match the stateparameter that you supplied in the previous step. If the state is unmatched,your request has been compromised by other parties, and the process should beaborted.
Step 3: Token exchange
An example of exchanging the token:
On success, Todoist returns HTTP 200 with token in JSON object format:
Once you have the authorization code, you can exchange it for the access tokenby sending a POST request to the following endpoint:
https://todoist.com/oauth/access_token.
Required parameters
| Name | Description |
|---|---|
| client_id String | The Client ID of the Todoist application that you registered. |
| client_secret String | The Client Secret of the Todoist application that you registered. |
| code String | The code that was sent in the query string to the redirect URL in the previous step. |
Potential errors
| Error | Description |
|---|---|
| Bad Authorization Code Error | Occurs when the code parameter does not match the code that is given in the redirect request: {'error': 'bad_authorization_code'} |
| Incorrect Client Credentials Error | Occurs when the client_id or client_secret parameters are incorrect: {'error': 'incorrect_application_credentials'} |
Some objects (like projects, labels, and filters) returned by our APIs may have colors defined by anid or name. The table below shows all information you may need for any of these colors.
| ID | Name | Hexadecimal | ID | Name | Hexadecimal |
|---|---|---|---|---|---|
| 30 | berry_red | #b8256f | 40 | light_blue | #96c3eb |
| 31 | red | #db4035 | 41 | blue | #4073ff |
| 32 | orange | #ff9933 | 42 | grape | #884dff |
| 33 | yellow | #fad000 | 43 | violet | #af38eb |
| 34 | olive_green | #afb83b | 44 | lavender | #eb96eb |
| 35 | lime_green | #7ecc49 | 45 | magenta | #e05194 |
| 36 | green | #299438 | 46 | salmon | #ff8d85 |
| 37 | mint_green | #6accbc | 47 | charcoal | #808080 |
| 38 | teal | #158fad | 48 | grey | #b8b8b8 |
| 39 | sky_blue | #14aaf5 | 49 | taupe | #ccac93 |
Our applications for Android and iOS support custom URL schemes for launching to specific views and initiating some common actions.
Views
The following schemes are available to open a specific view:
| Scheme | Description |
|---|---|
| todoist:// | Opens Todoist to the user's default view. |
| todoist://today | Opens the today view. |
| todoist://upcoming | Opens the Upcoming view. |
| todoist://profile | Opens the profile view. |
| todoist://inbox | Opens the inbox view. |
| todoist://teaminbox | Opens the team inbox view. If the user doesn't have a business account it will show an alert and redirect automatically to the inbox view. |
| todoist://notifications | Opens notifications view. |
Tasks
Example of adding a task:
Here's an example of a content value:
And how it should be supplied using Percent-encoding:
Here's an example of a date value:
And how it should be supplied using Percent-encoding:
The following schemes are available for tasks:
| Scheme | Description |
|---|---|
| todoist://task?id={id} | Opens a task by ID. |
| todoist://addtask | Opens the add task view to add a new task to Todoist. |
The todoist://addtask scheme accepts the following optional values:
| Value | Description |
|---|---|
| content URL encoding | The content of the task, which should be a string that is in Percent-encoding (also known as URL encoding). |
| date URL encoding | The due date of the task, which should be a string that is in Percent-encoding (also known as URL encoding). Look at our reference to see which formats are supported. |
| priority Integer | The priority of the task (a number between 1 and 4, 4 for very urgent and 1 for natural). Note: Keep in mind that very urgent is the priority 1 on clients. So, p1 will return 4 in the API. |
This URL scheme will not automatically submit the task to Todoist, it will just open and pre-fill the add task view. If no values are passed, the add task view will just be opened.
Projects
The following schemes are available for tasks:
| Scheme | Description |
|---|---|
| todoist://projects | Opens the projects view (shows all projects). |
| todoist://project?id={id} | Opens a specific project by ID. |
Example of opening a specific project:
The todoist://project scheme accepts the following required value:
| Value | Description |
|---|---|
| id Integer | The ID of the project to view. If the ID doesn't exist, you don't have access to the project, or the value is empty, an alert will be showed and the user will be redirected to the projects view. |
Labels
The following schemes are available for labels:
| Scheme | Description |
|---|---|
| todoist://labels | Opens the labels view (shows all labels) |
| todoist://label?name={name} | Opens a specific label by name. |
Example of opening a specific label:
The todoist://label scheme accepts the following required value:
| Value | Description |
|---|---|
| name String | The name of the label to view. If the label doesn't exist, you don't have access to the label, or the value is empty, an alert will be shown. |
Filters
The following schemes are available for filters:
| Scheme | Description |
|---|---|
| todoist://filters | Opens the filters view (shows all filters) |
| todoist://filter?id={id} | Opens a specific filter by ID. |
Example of opening a specific filter:
The todoist://filter scheme accepts the following required value:
| Value | Description |
|---|---|
| id Integer | The ID of the filter to view. If the ID doesn't exist, you don’t have access to the filter, or the value is empty, an alert will be showed and the user will be redirected to the filters view. |
Search
The following scheme is available for searching (Android only):
| Scheme | Description |
|---|---|
| todoist://search?query={query} | Used to search in the Todoist application. |
Example of searching for 'Test & Today':
The todoist://search scheme accepts the following required value:
| Value | Description |
|---|---|
| query URL encoding | The query to search in the Todoist application, which should be a string that is in Percent-encoding (also known as URL encoding). |
Market your app to millions of Todoist users with a custom integration page. Our searchable directory lets our audience easily find, install, and use your app — making it an effortless yet effective way to promote your work!
Get started today.
Todoist Examples Pdf
Submissions
To begin, fill out the app submissions form. Just add a marketing description, installation instructions, and links to your website and privacy policy.
We'll also ask you for some images, in the following format:
- Your app icon, in JPG format on a white background. The size of the image should be 250x250px.
- One or more screenshots in JPG format at 1600x1000px. If your screenshot includes images of Todoist it should use the default theme (Red).
Review
After you've submitted your app, we'll email you a confirmation. We aim to review submissions and respond with any feedback within 10 business days.
During the review, we'll make sure:
- All the fields in the submission form are filled out in English.
- Your app complements or enhances the functionality of Todoist. It should not replicate functionality already included.
- Your app is free of any functional errors during our testing.
- Users can easily set up the integration using the instructions you've provided.
- All links provided are HTTPS enabled to ensure the security of our users.
- Any use of the Todoist name or logo follow our brand guidelines.
- Your privacy policy ensures you will not sell or share our user's data to any third parties without their consent.
- The marketing descriptions and images you've provided are clear and follow our style.
If we find any issues along the way, we'll be in touch via email and work with you to resolve them.If you have any questions or updates at any time, you can reply to any of the emails you've received during the submissions process. We'll aim to get back to you within 2 business days.
Publishing
Todoist Setup Examples
Once your submission has passed our review, we'll publish your listing and provide you with a public link that youcan share! We'll also translate your listing to expand the reach of your marketing.
If you have any further questions or updates to provide after we've published your integration page,you can always reach out to our integrations team at integrations@doist.com.We're happy to help!
Thanks for using Todoist's APIs to build an application!
If you plan to utilize Todoist's logo or branding in the visual designof your application or website, please adhere toTodoist's brand guidelines.
In addition, please take note of the following:
- 'Todoist' should not be the first word in your application's name. Itmay be used elsewhere in the name, though. For instance 'x forTodoist' or 'x with Todoist', etc. This makes it clear that yourapplication is created by you and not by Doist.
- You must clearly state that your application is 'not created by,affiliated with, or supported by Doist' in your applicationdescription.
By using the Todoist marks you agree to properly follow the abovebrand guidelines as well asour Terms of Service. For furtherinformation about the use of the Todoist brand, please contactpress@doist.com.
Todoist Api Examples
Interested in developing an integration for Todoist but unsure where to start? Get in touch with us atintegrations@doist.com,and we'll be happy to help.