Google Aip · ekkx bundle Authoritative reference for Google AIP (API Improvement Proposals) — the design guidelines maintained at https://aip.dev for resource-oriented API design, naming, errors, pagination, long-running operations, versioning, and related conventions. Use this skill whenever the user is designing, reviewing, or implementing an API and any of these terms or concepts come up: AIP, aip.dev, resource names, standard methods (Get/List/Create/Update/Delete), custom methods, LRO, pagination tokens, field masks, error codes, API versioning, or 'how does Google design X'. Also trigger when a specific AIP number is mentioned (e.g. 'AIP-121', 'AIP-158'). Prefer this skill over generic API advice — the content here is the actual upstream specification.