eth_getTransactionCount

POSThttps://triport.io/rpc/bsc

Return an account nonce at a block.

BNB Smart Chainbsc:rpcbsc_read_rpc - 15 / 20 / 100 / 250 RPS (free / basic / pro / business) (default, unmeasured); enterprise unlimited

eth_getTransactionCount returns the transaction count, commonly called the account nonce, for an address at a selected BNB Smart Chain block.

The result is an EVM hex quantity. Use pending when an upstream node's pending-state view is required, or a mined block tag/number for confirmed state; availability of old state depends on archive capability.

This is account-scoped and differs from eth_getBlockTransactionCountByNumber, which counts transactions inside a block. Historical reads depend on the two confirmed archive-state pool nodes.

Parameters

JSON-RPC params is a positional array: [address, block].

addressstring (20-byte hex address)required

The 20-byte EVM account or contract address to query.

blockstring (block tag or hex quantity)required

Block selector: latest, earliest, pending, or an EVM hex block number.

Response

The response below is the checked fixture for this method; it is reproduced without changing its fields or values.

resultstring (hex quantity)

Account nonce as a hex quantity.

Errors

Errors use the standard JSON-RPC error envelope. See BSC errors for network-specific classification and the linked shared reference.

Code	Meaning	When it happens
`-32602`	Invalid params	A required positional parameter is missing or a value does not match the OpenRPC schema.
`-32000`	Upstream request failure	Interpret the message with the code: `header not found` means a missing block; pruned/unsupported state text means unavailable historical state.
`401`	Unauthorized	The `x-token` API key is missing or invalid.
`429`	Rate limited	The request exceeds the configured category RPS for the caller's tier.

Examples

JavaScript (fetch)

JavaScript

const response = await fetch("https://triport.io/rpc/bsc", {
  method: "POST",
  headers: {
    "x-token": process.env.TRIPORT_API_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_getTransactionCount",
    "params": [
      "0x0000000000000000000000000000000000000000",
      "latest"
    ]
  }),
});


const payload = await response.json();
console.log(payload.result);

Notes

Historical state is confirmed on two pool nodes. A historical request can fail when no eligible archive-state node is available.
Treat upstream -32000 by both code and message: header not found and pruned historical state are different conditions.
The BSC categories use configured defaults of 15 / 20 / 100 / 250 RPS; they are marked unmeasured in the tier matrix.
Related methods: eth_getBlockTransactionCountByNumber, eth_getBalance, txpool_status.

Request

cURLJavaScriptPython

curl https://triport.io/rpc/bsc \
  -H "x-token: $TRIPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getTransactionCount",
  "params": [
    "0x0000000000000000000000000000000000000000",
    "latest"
  ]
}'

const res = await fetch("https://triport.io/rpc/bsc", {
  method: "POST",
  headers: {
    "x-token": "$TRIPORT_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_getTransactionCount",
    "params": [
      "0x0000000000000000000000000000000000000000",
      "latest"
    ]
  }),
});
const data = await res.json();
console.log(data);

import requests


resp = requests.post(
    "https://triport.io/rpc/bsc",
    headers={
        "x-token": "$TRIPORT_API_KEY",
        "Content-Type": "application/json",
    },
    json={
        "jsonrpc": "2.0",
        "id": 1,
        "method": "eth_getTransactionCount",
        "params": [
            "0x0000000000000000000000000000000000000000",
            "latest",
        ],
    },
)
data = resp.json()
print(data)

ResponseExample

JSON

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x0"
}