Changesets

One call that applies records and tasks together, in order.

1 tools — 0 read, 1 write.

Tool		What it does
apply_changeset	write	Apply a whole write phase in ONE call: an ordered list of groups, each either items (upserted into a collection, keyed by on_conflict) or tasks (upserted, keyed by metadata.action_uid).

Calling these

Over MCP, find one with search_tools, then run it with execute_tool. Over REST, POST /api/capabilities/<tool> with the arguments as the JSON body. Either way, fetch the input schema for the tool you're about to call rather than guessing — get_tool_schema over MCP, or GET /api/capabilities?name=<tool> over REST.

See How the API works for auth, errors and the shared envelope.