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POST
eth_createAccessList
curl --request POST \
  --url https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_createAccessList",
  "params": [
    {
      "to": "0x20c0000000000000000000000000000000000000",
      "data": "0x95d89b41"
    },
    "latest"
  ],
  "id": 1
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<unknown>"
}
Tempo API method that creates an EIP-2930 access list for a transaction. The access list identifies storage slots and addresses the transaction will access, which can be used to optimize gas costs.
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​
Parameters

  • transactionObject — the transaction call object:
    • from — (optional) sender address
    • to — recipient address
    • gas — (optional) gas limit
    • gasPrice — (optional) gas price
    • value — (optional) value to send
    • data — (optional) call data
  • blockParameter — the block number (hex) or tag (latest, earliest, pending)

​
Response

  • result — an object containing:
    • accessList — an array of access list entries (address and storage keys)
    • gasUsed — the gas used by the transaction with the access list applied

​
eth_createAccessList code examples

curl -X POST "CHAINSTACK_NODE_URL" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc": "2.0", "method": "eth_createAccessList", "params": [{"to": "0x20c0000000000000000000000000000000000000", "data": "0x95d89b41"}, "latest"], "id": 1}'

Body

application/json
​
jsonrpc
string
default:2.0
​
method
string
default:eth_createAccessList
​
params
any[]

Method parameters

​
id
integer
default:1

Response

200 - application/json

Successful response

​
jsonrpc
string
​
id
integer
​
result
any

Method result

Last modified on May 18, 2026