InstructionLIVE

OpenBook V2 PlaceOrders

Real-time decoded data for the PlaceOrders instruction on the OpenBook V2 program. Every time this instruction is executed on Solana, you receive the full decoded payload with 14 accounts and 4 arguments in under 50ms.

Topicsolana.openbook_v2.place_orders
14accounts
2signers
9writable
4arguments

Accounts

Decoded account addresses included in every PlaceOrders message.

NameTypeSignerWritable
signerPublicKeyyes-
open_orders_accountPublicKey-yes
open_orders_adminPublicKeyyes-
user_quote_accountPublicKey-yes
user_base_accountPublicKey-yes
marketPublicKey-yes
bidsPublicKey-yes
asksPublicKey-yes
event_heapPublicKey-yes
market_quote_vaultPublicKey-yes
market_base_vaultPublicKey-yes
oracle_aPublicKey--
oracle_bPublicKey--
token_programPublicKey--

Arguments

Decoded instruction arguments included in every PlaceOrders message.

NameType
orders_typeenum(limit, immediateOrCancel, postOnly, market, postOnlySlide)
bidsVec<struct { price_lots: i64, max_quote_lots_including_fees: i64, expiry_timestamp: u64 }>
asksVec<struct { price_lots: i64, max_quote_lots_including_fees: i64, expiry_timestamp: u64 }>
limitu8

Subscribe to PlaceOrders

Connect and start receiving decoded data in seconds.

grpcurl -plaintext \
  -H 'x-eventstream-policy: {"version":1,"allowed_programs":"all","allowed_topics":"all"}' \
  -d '{"topic":"solana.openbook_v2.place_orders","format":"JSON"}' \
  events.nln.clr3.org:443 \
  nln.stream.v1.StreamService/Subscribe

The solana.openbook_v2.place_orders stream delivers decoded PlaceOrders instruction data from the OpenBook V2 program (opnb2LAfJYbR...) on Solana. Each message includes 14 decoded account addresses and 4 typed arguments, delivered in under 50 milliseconds from on-chain confirmation. Available in both JSON and Protobuf formats via the NoLimitNodes gRPC streaming API.

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