Create a new empty live-collaboration room, join it, and return the excalidraw.com link for a person to open. The link contains the encryption key; share it only with people who should see the drawing.

Join an existing excalidraw.com live-collaboration room from its link (the URL with #room=,). Loads the current scene from a connected peer, or from the room's persisted copy if nobody else is present.

Connection state, peers, and scene counters for the current room.

Read the current drawing. 'summary' gives one line per element with position, size, text, and a sampled path for freehand strokes. 'json' returns the full Excalidraw element array.

Add elements to the drawing from compact specs. Shapes take x, y, width, height and an optional label. Arrows take start/end element ids (edges are computed) or absolute points. Later specs may reference ids of earlier specs in the same call.

Add complete Excalidraw elements verbatim (the JSON shape from an .excalidraw file). Missing version fields are filled in; fractional indices are assigned if absent.

Patch existing elements by id. 'set' is merged over the element; version and nonce are bumped. Changing 'text' or 'fontSize' on a text element re-measures it unless width/height are given.

Soft-delete elements by id (Excalidraw keeps tombstones so peers converge).

Disconnect from the current room.