Todoist API Authentication

How to authenticate Todoist API requests: one Bearer API key plus a connectionId. MindCloud stores your Todoist API key securely — set it once, never resend it.

Every Todoist API request through MindCloud needs two things: a MindCloud API Key and a connectionId for your Todoist account. This page covers both, plus exactly how to send them, so you do not need to visit any other page to get authenticated.

Steps to authenticate

Create a MindCloud account at app.mindcloud.co if you do not already have one.
Generate a MindCloud API Key in API Keys. This is the Bearer token you send on every request. Keep it on your server.
Create a Todoist connection in Connections. Todoist uses an API key. You generate the key in your Todoist account, then paste it in when you create the connection — MindCloud stores it securely and never returns it in a response.
Copy the connection’s connectionId — you will send it on every request alongside your MindCloud API Key.

How requests are authenticated

Authentication has two layers. Your MindCloud API Key authenticates the request to MindCloud, sent as a Bearer token in the Authorization header. The connectionId selects the connected Todoist account that should run the action. MindCloud stores and refreshes the Todoist credentials behind that connection, so you never send provider tokens with your requests.

Pass connectionId in the query string for GET and DELETE actions, and in the JSON body for POST, PUT, and PATCH actions.

For example, calling List Tasks with an Todoist connection looks like this:

curl --request GET \
  --url "https://connect.mindcloud.co/v1/universal/todoist/latest/actions/list-tasks" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --get \
  --data-urlencode "connectionId=$CONNECTION_ID"

The Authorization: Bearer <your MindCloud API Key> header authenticates you to MindCloud; the connectionId tells MindCloud which Todoist account to run the action against. Missing or invalid Authorization returns 401, and a missing or mismatched connectionId returns 400.

Find your Todoist API token

You need access to the Todoist account you want MindCloud to use.

Open the Developer section in Todoist settings
In Todoist, go to Settings > Integrations > Developer.
Settings → Integrations → Developer
Copy your API token
Copy the API token shown in the Developer section and keep it somewhere secure until you finish the MindCloud connection.
Paste the token into MindCloud
Return to MindCloud and paste the copied value into the API Token field for this Todoist connection.

Keep your key safe

Keep your MindCloud API Key on your server; do not ship it in browser code, mobile apps, public repositories, or logs. Anyone with the key can call the Universal API as your MindCloud account, across every connection you have created.