JSON-RPC batching

Not a method — a transport feature. Send a JSON array of call objects in one HTTP request and receive an array of responses, one per call. Batching collapses N round-trips into one, which matters whenever you read many values per block (token balances, receipts, logs).

SwiftNodes counts a batch as a single request against your plan's rate limit. Responses can arrive out of order — match them by the id field.

Example request

curl -s https://rpc.swiftnodes.io/rpc/eth?key=YOUR_API_KEY \
  -X POST -H "Content-Type: application/json" \
  -d '[{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]},{"jsonrpc":"2.0","id":2,"method":"eth_gasPrice","params":[]}]'

Replace YOUR_API_KEY with your SwiftNodes key (free tier available).

Chain support — 82/107 chains

Auto-probed 2026-10-11 through the real customer path (auth, routing, failover). ✓ served · ± served by some upstreams of that chain · ✗ unavailable. Full matrix: method support.