List scenes and the current program/preview scene.

Switch the program output to a scene (immediate cut on program).

Set the preview scene (studio mode).

Trigger the studio-mode transition (preview → program).

Enable or disable studio mode.

List the items (sources) inside a scene with visibility state.

Show or hide a scene item (item_id from list_scene_items).

List all inputs (sources) with their kinds.

List audio inputs with mute state and volume (dB).

Mute or unmute an audio input.

Set an audio input's volume in dB (0 = unity, negative = quieter).

Set the text of a Text (GDI+/FreeType) source — e.g. an on-stream overlay line like a giveaway question or now-playing label.

Save a PNG screenshot of a source (or scene) to a local file.

Control a media source. action: play|pause|restart|stop|next|previous.

List filters on a source with enabled state.

Enable or disable a named filter on a source.

Get a scene item's position, scale, and crop.

Move/scale a scene item (item_id from list_scene_items). Only supplied fields change — e.g. scale_x/scale_y 0.5 halves a facecam.

Sample OBS stats for up to 60 seconds and report a stream-health verdict: dropped-frame %, GPU misses, CPU pressure.

Streaming state: live, duration, bytes, dropped frames.

Go live: start streaming to the configured service.

End the live stream.

Recording state: active, paused, duration, output path.

Start recording.

Stop recording; returns the saved file path.

Pause (true) or resume (false) the recording.

Save the replay buffer (must be running). Returns the clip path.

Start (true) or stop (false) the replay buffer.

Start (true) or stop (false) the virtual camera.

OBS performance stats: CPU, memory, FPS, frame drops, disk space.

List OBS profiles and the current one.

Switch OBS profile (stream settings bundle).

List scene collections and the current one.

Switch scene collection (full scene layout bundle).

Trigger an OBS hotkey by name (see get_hotkey_list in OBS docs).

Verify the OBS websocket connection and report versions.