Read the implementation and verification status of every operation family. Unavailable features cannot be invoked.

Check the local Things connection, timezone, ordinary-write permission, and separate Trash permission.

Find items by type, title or notes, status, built-in list, or project/area parent. Trash is excluded unless its list is requested. Notes are omitted unless requested. Results are bounded and not a snapshot. Fetch an item before editing.

Read one Things item by kind and stable ID, including its revision for safe editing.

Create a to-do, project, area, or tag. Supply a unique UUID requestId. Creation of all four kinds is native verified. Local write permission is required and disabled by default.

Edit supported fields, or complete/cancel/reopen a to-do or project. Use the latest revision and a unique UUID requestId. Omitted fields stay unchanged; deadline null clears it. No deletion or arbitrary property editing.

Schedule a to-do or project on an explicit calendar date in the Mac timezone. Requires its current revision and a unique UUID requestId. Does not set reminders or repeating rules.

Move a to-do to a project or area, a project to an area, detach a parent, or move a to-do to Inbox, Today, Anytime, or Someday. Projects support Today and Someday. Project Anytime and direct Logbook moves are unavailable. Moving projects can affect descendants. Requires the latest revision and write permission. Does not reorder items, address headings, or restore Trash.

Move one to-do, including any checklist it contains, to Things Trash on the Mac. Read it and review the target first. Requires the latest revision, a unique request ID, ordinary write permission, and the separate local Trash grant. Does not permanently delete, empty Trash, or delete projects, areas or tags.

Check the local receipt for a mutation request ID. Pending or unknown means inspect Things before any further write; do not create a new ID as an automatic retry.