Concepts

• Response envelope — where payloads, pages, timestamps, and readiness appear.
• Proposal and topic keys — opaque handles returned by discovery resources.
• Pagination — cursor pages and the voter-ranking exception.
• Readiness and coverage — service availability, publication state, and data completeness.
• Timestamps and numbers — UTC timestamps and exact decimal strings.
• Errors — validation, payment, rate limits, quotas, and recovery.