eth_getTransactionCount on Ethereum
Returns the number of transactions sent from an address — i.e. the next nonce to use. Use the "pending" tag to account for in-flight transactions.
The latest tag counts only mined txs; pending includes in-flight ones — always use pending to pick the next nonce or you'll collide with your own unconfirmed transactions.
Ethereum endpoint (public — no key)
https://rpc.nodeflare.app/eth/publicMethod
eth_getTransactionCount
Cost
2 CU
Chain ID
1
Block time
~12 s
Finality
~13 min (finalized)
Transactions on Ethereum
Mainnet's mempool is competitive: underpriced transactions linger. Price transactions from eth_feeHistory percentiles, and replace a stuck transaction by re-sending the same nonce with a higher priority fee.
Parameters
[address, blockNumber|tag]cURL
curl https://rpc.nodeflare.app/eth/public \
-X POST \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", "latest"],"id":1}'The example targets the USDC contract on Ethereum — you can run it as-is.
ethers.js
import { ethers } from 'ethers';
const provider = new ethers.JsonRpcProvider(
'https://rpc.nodeflare.app/eth/public'
);
const result = await provider.send('eth_getTransactionCount', ["0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", "latest"]);Try it live
Runs the example above against the public Ethereum endpoint — straight from your browser.
eth_getTransactionCount on Ethereum — FAQ
How do I call eth_getTransactionCount on Ethereum?
POST a JSON-RPC 2.0 request with "method": "eth_getTransactionCount" to NodeFlare's Ethereum endpoint at https://rpc.nodeflare.app/eth/public. No API key is required for the public endpoint.
What does eth_getTransactionCount cost on the free tier?
eth_getTransactionCount is weighted at 2 compute units per call. The free tier includes 2,000,000 CU/month, so that is roughly 1,000,000 eth_getTransactionCount calls per month — no credit card.
Is eth_getTransactionCount available on the public Ethereum endpoint?
Yes. eth_getTransactionCount works on the public Ethereum endpoint (https://rpc.nodeflare.app/eth/public) with no API key, rate-limited per IP. A free key adds higher limits and a dedicated path.
Anything Ethereum-specific to know when using eth_getTransactionCount?
Mainnet's mempool is competitive: underpriced transactions linger. Price transactions from eth_feeHistory percentiles, and replace a stuck transaction by re-sending the same nonce with a higher priority fee.
Call eth_getTransactionCount on Ethereum with a free key
2,000,000 compute units/month, heavy methods unlocked, every chain included. No credit card.
Get your free API key →eth_getTransactionCount on other chains