eth_getTransactionCount - Validation Cloud

Returns the number of transactions sent from an address. This method will use 30 Compute Units.

Reference: Here

Parameters

DATA, 20 Bytes - address.
QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
  "0x102cB4Da51a9936ba2297be8C930B4Ca658586DA",
  "latest", // state at the latest block
]

Returns

QUANTITY - String hex value representing integer of the number of transactions sent from this address.

// Result
{
	"jsonrpc": "2.0",
	"result": "0x17320", // 95,008
	"id": 1
}

curl https://mainnet.conflux.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0x102cB4Da51a9936ba2297be8C930B4Ca658586DA","latest"],"id":1}'

curl https://testnet.conflux.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0x8d86Bc475bEDCB08179c5e6a4d494EbD3b44Ea8B","latest"],"id":1}'