aRPC
Stream pre-execution Solana transactions, entries, and slot updates over gRPC from nine metros, with named account filters.
aRPC hands you Solana transactions, entries and slot updates as we see them on the network, before they execute. It's the earliest typed stream we offer; only raw Shredstream sees the wire sooner. Each of the nine Corvus metros has its own gRPC endpoint:
http://arpc.<region>.corvus-labs.io:20202Keep the http scheme (transport security). You get in on an allowlisted egress IP unless your dedicated deployment was set up with an x-token. If you'd rather start from something that runs, the quick start is a Node.js stream printing live transactions.
You have aRPC once your plan's RPS and TPS together reach 500. Starter (200 + 50) doesn't get there; Standard (500 + 125) and Professional (1,000 + 250) both do. See plan contents.
Choose an API
Both are shipping. Start on v2 unless you have a legacy integration to keep alive.
| Capability | Legacy (arpc.ARPCService) | v2 (arpc.v2.Service) |
|---|---|---|
| RPCs | 1 bidirectional Subscribe | 4: entries, transactions, binary transactions, slots |
| Decoded transactions | Yes | Yes (SubscribeTransactions) |
| Raw transaction wire bytes | No | Yes (SubscribeBinaryTransactions) |
| Entry stream | No | Yes (SubscribeEntries) |
| Dedicated slot stream | No; new_seen_slots on the same stream | Yes (SubscribeSlots) |
| Named account filters | Yes, map key is the name | Yes, filter_id per filter |
| Per-filter add/remove without reconnecting | No unregister message | RegisterTransactionFilters / UnregisterTransactionFilters |
| Acknowledged filter registration | No | FilterValidationResult per filter_id |
| Resolved address-lookup-table addresses | Lookup metadata only | Metadata plus loaded_writable_addresses / loaded_readonly_addresses |
Per-stream sequence counter | No | Yes |
| Replay or resume after disconnect | No | No |
Protos:
Quick start
A working Node.js transaction stream
v2 API
Entries, decoded or binary transactions, slot status, and filter semantics
Legacy API
One bidirectional stream of decoded transactions
Regions & endpoints
All nine aRPC hosts and the port
Limits & operations
The PPS disconnect, the filter-update ceiling, the 10-second heartbeat, and what sequence cannot tell you
FAQ
The PPS disconnect, filter validation and sequence numbers, answered short
aRPC data is pre-execution
Everything here is an early observation: execution results don't exist yet, and SLOT_STATUS_COMPLETE only means aRPC saw the slot's last entry. Confirm anything you act on through Solana RPC.