On-chain central limit order book for Solana
Stream every OpenBook V2 interaction. Order placements, cancellations, fills, market creation, and settlement. 29 decoded streams for Solana's decentralized order book.
opnb2LAfJYbRMAHHvqjCwQxanZn7ReEHp1k81EohpZbDecoded, typed, delivered. No parsing, no delays.
Every on-chain instruction parsed into typed fields. Accounts, arguments, and metadata, ready to use.
Program events (logs) decoded into structured data. No log parsing, no regex, just typed fields.
Events arrive at your app within 50 milliseconds of on-chain confirmation. Fast enough for trading.
Choose JSON for easy debugging or Protobuf for maximum performance. Same data, your choice of format.
We handle the IDL. You get clean, decoded data. No anchor, no borsh, no manual deserialization.
JavaScript, Python, Rust, Go. Any language with gRPC support. Code examples included.
Click any stream to see its full schema, accounts, and code examples.
solana.openbook_v2.create_marketsolana.openbook_v2.close_marketsolana.openbook_v2.create_open_orders_indexersolana.openbook_v2.close_open_orders_indexersolana.openbook_v2.create_open_orders_accountsolana.openbook_v2.close_open_orders_accountsolana.openbook_v2.place_ordersolana.openbook_v2.edit_ordersolana.openbook_v2.edit_order_peggedsolana.openbook_v2.place_orderssolana.openbook_v2.cancel_all_and_place_orderssolana.openbook_v2.place_order_peggedsolana.openbook_v2.place_take_ordersolana.openbook_v2.consume_eventssolana.openbook_v2.consume_given_eventssolana.openbook_v2.cancel_ordersolana.openbook_v2.cancel_order_by_client_order_idsolana.openbook_v2.cancel_all_orderssolana.openbook_v2.depositsolana.openbook_v2.refillsolana.openbook_v2.settle_fundssolana.openbook_v2.settle_funds_expiredsolana.openbook_v2.sweep_feessolana.openbook_v2.set_delegatesolana.openbook_v2.set_market_expiredsolana.openbook_v2.prune_orderssolana.openbook_v2.stub_oracle_createsolana.openbook_v2.stub_oracle_closesolana.openbook_v2.stub_oracle_setsubscribe to any OpenBook V2 stream with a single command
grpcurl -plaintext \
-H 'x-eventstream-policy: {"version":1,"allowed_programs":"all","allowed_topics":"all"}' \
-d '{"topic":"solana.openbook_v2.create_market","format":"JSON"}' \
events.nln.clr3.org:443 \
nln.stream.v1.StreamService/Subscribeimport grpc, json
import stream_service_pb2 as pb
import stream_service_pb2_grpc as rpc
channel = grpc.insecure_channel('events.nln.clr3.org:443')
stub = rpc.StreamServiceStub(channel)
policy = json.dumps({"version": 1,
"allowed_programs": "all",
"allowed_topics": "all"})
for msg in stub.Subscribe(
pb.SubscribeRequest(
topic="solana.openbook_v2.create_market",
format=pb.OutputFormat.JSON),
metadata=[
('x-eventstream-policy', policy)]):
event = json.loads(msg.payload)
print(f"slot={msg.slot}", event)NoLimitNodes provides 29 decoded real-time streams for the OpenBook V2 program on Solana (opnb2LAf...). Every instruction call and every emitted event is parsed, typed, and delivered to your app in under 50 milliseconds.
Instead of writing custom deserialization code, decoding Anchor IDLs, or parsing raw transaction logs, you subscribe to a topic like solana.openbook_v2.create_market and receive structured JSON or Protobuf data instantly. 29 instruction streams and 0 event streams cover every possible interaction with the OpenBook V2 program.
Whether you are building trading bots, analytics dashboards, monitoring tools, or research pipelines, NoLimitNodes program streams give you the decoded on-chain data you need without the infrastructure overhead. Start with our free tier and scale to production.
Get your API key and subscribe to any of 29 decoded streams.