> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes. # selfId$ > Observable of the local participant's member ID. ```ts get selfId$(): Observable ``` Observable of the local participant's member ID. ## selfId ```ts get selfId(): string | null ``` Local participant's member ID, or `null` if not joined. ## **Examples** ```ts call.selfId$.subscribe((selfId) => { console.log('selfId:', selfId); }); ``` > Observable of the local participant's member ID.