# EM-STR-03 provider comparison

Claude and Grok agree on the identity split: legacy WM-ACT-001 is narrowed to agent Function / Competence / Proficiency / Capacity; Business Capability and Capability Realization each require independent identity and remain registry-unassigned; Capability Assessment profiles WM-ACT-034; Capability Level is not a root.

Grok strengthened the transfer test, rejected department and process definitions, confirmed one capability may have concurrent realizations, and required Capability Realization identity because a bare edge cannot retain validity, evidence, supersession, partial coverage or history.

The frozen audit accepted that fixed identity decision and found 21 bounded artifact defects. The remediation adds governed natural identity, explicit version-versus-succession rules, versioned decomposition edges, single authoritative realization direction, one-realizer granularity, coverage/completeness claim bearers, evidence pins, valid and knowledge time, lifecycle semantics, requirement/scale pins, tombstones, profile governance, fixture mappings and a safe WM-ACT-001 migration boundary. No identifier is allocated and publication remains held.