getFirstAvailableBlock

getFirstAvailableBlock RPC Method

post

Returns the slot of the lowest confirmed block that has not been purged from the ledger. This is useful for determining the earliest available block data in the ledger history.

Authorizations

AuthHeaderURLParameter

Body

jsonrpcstring · enumRequired

JSON-RPC protocol version

Example: 2.0Possible values:

idone ofRequired

Request identifier that will be returned in the response

Example: 1

stringOptional

or

numberOptional

methodstring · enumRequired

The RPC method name

Example: getFirstAvailableBlockPossible values:

Responses

200

Successful Response

application/json

401

Unauthorized

text/plain

403

Forbidden

text/plain

429

Too Many Requests

text/plain

500

Internal Server Error

text/plain

post

cURLSolana Kitweb3.jsRust

curl -X POST https://public.rpc.solanavibestation.com \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getFirstAvailableBlock"
  }'

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