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Returns the slot of the lowest confirmed block that has not been purged from the ledger.
cURL
curl --request POST \ --url https://mainnet.helius-rpc.com/ \ --header 'Content-Type: application/json' \ --data '{ "jsonrpc": "2.0", "id": "1", "method": "getFirstAvailableBlock" }'
{ "jsonrpc": "2.0", "id": "1", "result": 250000 }
Your Helius API key. You can get one for free in the dashboard.
Successfully retrieved the slot of the lowest confirmed block.
The response is of type object.
object
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