Index the prototypes of what comes next.

ProtoIndex is unusually versatile because both halves have strong technical meaning. “Proto” can evoke prototype, protocol, prototyping, or proto-structures, while “Index” immediately communicates organization, discovery, lookup, ranking, and structured retrieval. The term is also used technically in graphics and software systems, including a protoIndex identifier for prototype instances in USD-based rendering systems. :contentReference[oaicite:0]{index=0}

ProtoIndex.com has the rare quality of sounding like an established developer primitive. It could become a model index, prototype marketplace, AI registry, searchable developer catalog, component discovery engine, or infrastructure layer. The underlying terminology already appears across software ecosystems, including graphics, indexing, and generated-code tooling, giving the name authentic technical resonance. :contentReference[oaicite:1]{index=1}