getFirstAvailableBlock

Returns the slot of the lowest confirmed block that has not been purged from the ledger

getFirstAvailableBlock

POSThttps://mainnet.helius-rpc.com/?api-key=<api-key>

Body

application/json

jsonrpcenum

The JSON-RPC protocol version.

Example: "2.0"

2.0

idstring

A unique identifier for the request.

Example: "1"

methodenum

The name of the RPC method to invoke.

Example: "getFirstAvailableBlock"

getFirstAvailableBlock

Response

200400401500

Successfully retrieved the slot of the lowest confirmed block.

Body

application/json

jsonrpcenum

The JSON-RPC protocol version.

Example: "2.0"

2.0

idstring

Identifier matching the request.

Example: "1"

resultinteger

Slot of the lowest confirmed block that has not been purged from the ledger.

Example: 250000

Request

JavaScriptCurlPython

const response = await fetch('https://mainnet.helius-rpc.com/?api-key=<api-key>', {
    method: 'POST',
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      "jsonrpc": "2.0",
      "id": "1",
      "method": "getFirstAvailableBlock"
    }),
});
const data = await response.json();

Response

200400401500

{
  "jsonrpc": "2.0",
  "id": "1",
  "result": 250000
}