getBlocks

Returns a list of confirmed blocks between two slots.

POST

getBlocks

cURL

curl --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getBlocks",
  "params": [
    5,
    10,
    {
      "commitment": "finalized"
    }
  ]
}
'

200

{
  "jsonrpc": "2.0",
  "id": "1",
  "result": [
    5,
    6,
    7,
    8,
    9,
    10
  ]
}

Request Parameters

slot · number · required

Start slot (required).

slot · number · required

End slot (optional, must be ≤ 500,000 blocks from start slot).

commitment · string · default: "finalized"

The commitment level for the request.

• confirmed
• finalized

Authorizations

api-key · string · query · required

Your Helius API key. You can get one for free in the dashboard.

Body

application/json

jsonrpc · enum<string> · default: 2.0 · required

The JSON-RPC protocol version.

Available options: 2.0

Example:

"2.0"

id · string · default: 1 · required

A unique identifier for the request.

Example:

"1"

method · enum<string> · default: getBlocks · required

The name of the RPC method to invoke.

Available options: getBlocks

Example:

"getBlocks"

params · integer · integer · object[] · required

Request parameters for the method.

Start slot (required).

Example:

5

Response

200

application/json

Successfully retrieved confirmed blocks.

jsonrpc · enum<string>

Available options: 2.0

Example:

"2.0"

id · string

Identifier matching the request.

Example:

"1"

result · integer[]

List of confirmed blocks between start_slot and end_slot.

Example:

[5, 6, 7, 8, 9, 10]