cmux Browser

Use this skill for browser automation inside cmux webview surfaces. It is different from a standalone browser automation tool because every browser surface lives inside a cmux workspace, pane, and surface topology.

Default Rule

Open and control browser surfaces in the current caller workspace unless the user explicitly names another workspace or window.

Before mutating browser state, identify the caller:

printf 'workspace=%s\nsurface=%s\nsocket=%s\n' \
  "${CMUX_WORKSPACE_ID:-}" \
  "${CMUX_SURFACE_ID:-}" \
  "${CMUX_SOCKET_PATH:-}"
cmux identify --json

Use CMUX_WORKSPACE_ID for new browser splits and CMUX_SURFACE_ID to understand the terminal that invoked the automation. Do not open a browser in the visually focused workspace if it differs from the caller workspace.