Public onchain data only
Radion streams decoded onchain events and public mempool transactions. There are no account-only order or fill streams. Radion cannot see private orderbooks or your account state. To track your own confirmed fills, subscribe to the trading and wallets channels, filtered to your addresses.
Mempool is speculative
Pending transactions on the pending feed — any channel you subscribe to with confirmed: false — can be dropped, replaced, reordered, or reverted before they confirm. Treat them as hints, not facts, and check them against the confirmed feed by transaction hash. Mempool filters can only match fields that show up as calldata arguments — see Filter reach.
Backpressure
Radion keeps a fixed window of recent events for each stream. If your client reads slower than events arrive and falls behind that window, the oldest events are dropped and you get a lagged error frame with a skipped count. The connection stays open, but the gap is not sent again.
To recover, reconnect and resubscribe. To avoid lag, read fast, narrow your subscriptions with filters, and do not block the socket read loop with heavy work for each message.
No event replay
Streams are live only. There is no backfill and no historical replay over the WebSocket. You get events from the moment you subscribe. For historical data, use the REST API.Last modified on July 5, 2026