POST /search is validation-only: it normalizes the identifier type and does not call Xbox or consume credits.
Search types
Canonical types:gamertagxuid
xbox,xbl, andusername->gamertagid,xbox_id, andxuid->xuid
Endpoint groups
POST /tools/xbox/title-detail also requires a numeric titleId in the body.
Fast path
Validate an input before launching enrichment./all when you need a complete Xbox profile without full per-title achievements.