RPC method

trace_block on Flare

Supported on SwiftNodes

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

What trace_block does

Returns Parity-style traces for every transaction in a block: internal calls, contract creations and value transfers. Indexers use it to reconstruct internal ETH movements that receipts do not show.

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":"trace_block","params":["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: trace_block on Flare
const result = await client.request({
  method: "trace_block",
  params: ["latest"],
});

Other methods on Flare

trace_block on other chains

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

Frequently asked questions

Does Flare support trace_block?

Yes. trace_block 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.