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POST
/
eth_getBlockTransactionCountByNumber
curl --request POST \
  --url https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/ \
  --header 'Content-Type: application/json' \
  --data '{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_getBlockTransactionCountByNumber",
  "params": [
    "latest"
  ]
}'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}
Monad API method that returns the number of transactions in a block matching the given block number. This method allows you to quickly check the transaction count for any block by its number.
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Parameters

  • quantity|tag — the block number as a hexadecimal string, or one of the following block tags:
    • latest — the most recent block in the canonical chain
    • earliest — the genesis block
    • pending — the pending state/transactions

​
Response

  • result — the number of transactions in the block, encoded as hexadecimal.

​
eth_getBlockTransactionCountByNumber code examples

const { ethers } = require("ethers");

const provider = new ethers.JsonRpcProvider("CHAINSTACK_NODE_URL");

async function getBlockTransactionCount() {
  const blockNumber = "latest"; // Or use hex like "0x1234"
  const count = await provider.send("eth_getBlockTransactionCountByNumber", [blockNumber]);
  console.log(`Transaction count: ${parseInt(count, 16)}`);
}

getBlockTransactionCount();

​
Use case

A practical use case for eth_getBlockTransactionCountByNumber is analyzing network throughput over time by sampling transaction counts across multiple blocks, which helps understand network congestion patterns.

Body

application/json
​
id
integer
default:1
​
jsonrpc
string
default:2.0
​
method
string
default:eth_getBlockTransactionCountByNumber
​
params
string[]

Response

200 - application/json

The number of transactions in the block.

​
jsonrpc
string
​
id
integer
​
result
string