RPC method

eth_createAccessList on Arbitrum

Supported on SwiftNodes

Measured 2026-10-11 by our weekly probe, which calls eth_createAccessList through the same Arbitrum endpoint customers use.

What eth_createAccessList does

Simulates a transaction and returns the EIP-2930 access list of addresses and storage keys it touches, plus the gas it would use with that list attached.

eth_createAccessList on Arbitrum: what we measured

  • Default Arbitrum routing keeps state for roughly the last 1,000,000 blocks (about 3.4 days of Arbitrum history). Simulating against a block older than that needs historical state. Add &archive=1 to send the request to archive upstreams (paid plans).

Example request

curl -s https://rpc.swiftnodes.io/rpc/arbitrum?key=YOUR_API_KEY \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_createAccessList","params":[{"from":"0x0000000000000000000000000000000000000000","to":"0x0000000000000000000000000000000000000000","data":"0x"},"latest"]}'
import { createPublicClient, http } from "viem";

const client = createPublicClient({ transport: http("https://rpc.swiftnodes.io/rpc/arbitrum?key=YOUR_API_KEY") });

// Any JSON-RPC method, typed loosely: eth_createAccessList on Arbitrum
const result = await client.request({
  method: "eth_createAccessList",
  params: [{"from":"0x0000000000000000000000000000000000000000","to":"0x0000000000000000000000000000000000000000","data":"0x"},"latest"],
});

Other methods on Arbitrum

eth_createAccessList on other chains

Support differs by chain; the full measured table is on the eth_createAccessList reference.

Frequently asked questions

Does Arbitrum support eth_createAccessList?

Yes. eth_createAccessList answered correctly on the SwiftNodes Arbitrum endpoint in our weekly method probe (2026-10-11), which sends real requests through the customer path.

Are there limits on eth_createAccessList on Arbitrum?

Default Arbitrum routing keeps state for roughly the last 1,000,000 blocks (about 3.4 days of Arbitrum history). Simulating against a block older than that needs historical state. Add &archive=1 to send the request to archive upstreams (paid plans).

Arbitrum endpoints, live block height and WebSocket status are on the Arbitrum RPC page.

One key covers every chain we serve, and SwiftNodes has a free tier.