Methods

Method	Purpose
getAccountChanges	Every write to one account in a slot range, newest first.
getAccountDiff	One account at two points, with a structural summary.
getHealth	Solana-compatible liveness probe.
getHistoricalFeatureSet	Runtime feature gates active at a slot.
getHistoricalAccountInfo	One account at a chosen point in history.
getMultipleHistoricalAccounts	Up to 100 accounts at one shared point in history.
getRewindCoverage	Archive coverage, gaps, and your key's window.
simulateHistoricalTransaction	Replay a transaction against archive state at a chosen position.

Anything else returns -32601 Method not found.