The latest CX measurement framework/tool with survey questions is available in the following article -

Syed Mahmudur Rahman, Jamie Carlson, Siegfried P. Gudergan, Martin Wetzels, Dhruv Grewal. (2022). Perceived Omnichannel Customer Experience (OCX): Concept, measurement, and impact. Journal of Retailing.

Open access; freely available at https://doi.org/10.1016/j.jretai.2022.03.003

Prior service quality literature has established methods for measuring CX in traditional, single-channel contexts but not adapted such measures to omnichannel contexts. This study fills that gap by offering an empirically validated measurement instrument (i.e., OCX) that comprehensively measures CX according to the relevant attributes and encounters that matter across all retail channels, as sources of a single, seamless omnichannel CX.