RPC method

eth_createAccessList on Flare

Supported on SwiftNodes

Measured 2026-10-11 by our weekly probe, which calls eth_createAccessList through the same Flare 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.

Example request

curl -s https://rpc.swiftnodes.io/rpc/flare?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/flare?key=YOUR_API_KEY") });

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

Other methods on Flare

eth_createAccessList on other chains

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

Frequently asked questions

Does Flare support eth_createAccessList?

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

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

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