eth_getTransactionCount

Returns the number of transactions sent from an address (the nonce).

Returns the number of transactions sent from an address. This value is the account’s current nonce — the value to use as nonce when constructing the next transaction.

Since Denim, Base produces a canonical block every 200ms and Flashblocks are retired. The "pending" tag is still accepted, but it no longer returns Flashblocks preconfirmation state. Use "latest" for the count of transactions in canonical blocks. If you submit transactions at high frequency, track the next nonce in your application and reconcile it with "latest", rather than relying on a single RPC read to avoid nonce gaps or reuse. See Migrate From Flashblocks.

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Parameters

address · string · required

The 20-byte address to query.

block · string · required

Block number in hex, or "latest", "pending", "safe", "finalized", "earliest".

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Returns

result · string

The transaction count (nonce) as a hexadecimal string.

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Example

Standard (latest confirmed)

curl https://mainnet.base.org \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": ["0x742d35Cc6634C0532925a3b8D4C9dD0b4f3BaEa", "latest"],
    "id": 1
  }'