Disconnect Microsoft To Do: deletes the locally stored tokens (and any pending login). The Microsoft-side app consent is NOT revoked; to fully revoke, remove the app at account.microsoft.com > Privacy.

Check whether Microsoft To Do is connected. Use before task tools; if not connected, call login.

Connect Microsoft To Do. Call WITHOUT arguments to start: it returns an authorize URL for the user to open and consent, plus a ready-to-relay message covering the paste-back fallback. When the user later sends you a localhost callback URL from their address bar, call login AGAIN passing it as callbackUrl to finish.

Show the Microsoft To Do provider and its auth state and capabilities. Run this first to learn what is available.

List the task lists (folders) of a provider.

Create a new task list (folder).

Delete an entire task list and its tasks. Irreversible.

List tasks. Give listId for one list; omit it to page across every list of the provider.

Search open tasks by substring across every list of every connected provider.

Fetch one task by list and task id.

Create a task. dueDate accepts ISO date (2026-08-25) or RFC 3339 datetime. parentTaskId nests it as a subtask where supported.

Update a task (partial). Set status "completed" or "needsAction", change title/notes, or set dueDate (null removes it).

Mark a task completed.

Delete a task permanently.

Recreate an existing task in another list and delete it from the source list (Graph To Do has no native move). Use to reorganize.