Guidewire SDK Patterns Overview Build the Cloud API request layer that runs in production. This skill assumes the auth layer from is in place — bearer tokens come from the cached token provider, not a static . What this layer adds: safe mutations under optimistic locking, retry-aware writes, quota-friendly request pacing, complete pagination, and a typed error surface that business logic can pattern-match. Five production failures this skill prevents: 1. 409 Conflict storms — client GETs a record, lets the user (or workflow) edit it, then PATCHes back without the latest ; the next concurrent…